optimized sgemv_n for small sizes
This commit is contained in:
wernsaar
parent
0fc560ba23
commit
2a60c6d4b0
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@ -9,7 +9,7 @@ DSYMV_L_KERNEL = dsymv_L.c
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SSYMV_U_KERNEL = ssymv_U.c
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SSYMV_L_KERNEL = ssymv_L.c
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SGEMVNKERNEL = sgemv_n.c
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SGEMVNKERNEL = sgemv_n_4.c
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SGEMVTKERNEL = sgemv_t_4.c
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DGEMVNKERNEL = dgemv_n.c
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@ -0,0 +1,319 @@
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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:
|
||||
1. Redistributions of source code must retain the above copyright
|
||||
notice, this list of conditions and the following disclaimer.
|
||||
2. Redistributions in binary form must reproduce the above copyright
|
||||
notice, this list of conditions and the following disclaimer in
|
||||
the documentation and/or other materials provided with the
|
||||
distribution.
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||||
3. Neither the name of the OpenBLAS project nor the names of
|
||||
its contributors may be used to endorse or promote products
|
||||
derived from this software without specific prior written permission.
|
||||
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
||||
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
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
|
||||
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
||||
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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#if defined(BULLDOZER) || defined(PILEDRIVER)
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#include "sgemv_n_microk_bulldozer-4.c"
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#elif defined(NEHALEM)
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#include "sgemv_n_microk_nehalem-4.c"
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#endif
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#define NBMAX 4096
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#ifndef HAVE_KERNEL_4x8
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static void sgemv_kernel_4x8(BLASLONG n, FLOAT **ap, FLOAT *x, FLOAT *y, BLASLONG lda4)
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{
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BLASLONG i;
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FLOAT *a0,*a1,*a2,*a3;
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FLOAT *b0,*b1,*b2,*b3;
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FLOAT *x4;
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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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b0 = a0 + lda4 ;
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b1 = a1 + lda4 ;
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b2 = a2 + lda4 ;
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b3 = a3 + lda4 ;
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x4 = x + 4;
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for ( i=0; i< n; i+=4 )
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{
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y[i] += a0[i]*x[0] + a1[i]*x[1] + a2[i]*x[2] + a3[i]*x[3];
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y[i+1] += a0[i+1]*x[0] + a1[i+1]*x[1] + a2[i+1]*x[2] + a3[i+1]*x[3];
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y[i+2] += a0[i+2]*x[0] + a1[i+2]*x[1] + a2[i+2]*x[2] + a3[i+2]*x[3];
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y[i+3] += a0[i+3]*x[0] + a1[i+3]*x[1] + a2[i+3]*x[2] + a3[i+3]*x[3];
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y[i] += b0[i]*x4[0] + b1[i]*x4[1] + b2[i]*x4[2] + b3[i]*x4[3];
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y[i+1] += b0[i+1]*x4[0] + b1[i+1]*x4[1] + b2[i+1]*x4[2] + b3[i+1]*x4[3];
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y[i+2] += b0[i+2]*x4[0] + b1[i+2]*x4[1] + b2[i+2]*x4[2] + b3[i+2]*x4[3];
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y[i+3] += b0[i+3]*x4[0] + b1[i+3]*x4[1] + b2[i+3]*x4[2] + b3[i+3]*x4[3];
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}
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}
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#endif
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#ifndef HAVE_KERNEL_4x4
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static void sgemv_kernel_4x4(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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for ( i=0; i< n; i+=4 )
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{
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y[i] += a0[i]*x[0] + a1[i]*x[1] + a2[i]*x[2] + a3[i]*x[3];
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y[i+1] += a0[i+1]*x[0] + a1[i+1]*x[1] + a2[i+1]*x[2] + a3[i+1]*x[3];
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y[i+2] += a0[i+2]*x[0] + a1[i+2]*x[1] + a2[i+2]*x[2] + a3[i+2]*x[3];
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y[i+3] += a0[i+3]*x[0] + a1[i+3]*x[1] + a2[i+3]*x[2] + a3[i+3]*x[3];
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}
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}
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#endif
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static void sgemv_kernel_4x1(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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for ( i=0; i< n; i+=4 )
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{
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y[i] += a0[i]*x[0];
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y[i+1] += a0[i+1]*x[0];
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y[i+2] += a0[i+2]*x[0];
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y[i+3] += a0[i+3]*x[0];
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}
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}
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static void add_y(BLASLONG n, FLOAT *src, FLOAT *dest, BLASLONG inc_dest, FLOAT *alpha) __attribute__ ((noinline));
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static void add_y(BLASLONG n, FLOAT *src, FLOAT *dest, BLASLONG inc_dest, FLOAT *alpha)
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{
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BLASLONG i;
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if ( inc_dest != 1 )
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{
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FLOAT da = *alpha;
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for ( i=0; i<n; i++ )
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{
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*dest += *src * da;
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src++;
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dest += inc_dest;
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}
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return;
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}
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i=0;
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__asm__ __volatile__
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(
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"movss (%2) , %%xmm10 \n\t"
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"shufps $0 , %%xmm10 , %%xmm10 \n\t"
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".align 16 \n\t"
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".L01LOOP%=: \n\t"
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"movups (%3,%0,4) , %%xmm12 \n\t"
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"movups (%4,%0,4) , %%xmm11 \n\t"
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"mulps %%xmm10 , %%xmm12 \n\t"
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"addq $4 , %0 \n\t"
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"addps %%xmm12 , %%xmm11 \n\t"
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"subq $4 , %1 \n\t"
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"movups %%xmm11, -16(%4,%0,4) \n\t"
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"jnz .L01LOOP%= \n\t"
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:
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:
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"r" (i), // 0
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"r" (n), // 1
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"r" (alpha), // 2
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"r" (src), // 3
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"r" (dest) // 4
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: "cc",
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"%xmm10", "%xmm11", "%xmm12",
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"memory"
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);
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}
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int CNAME(BLASLONG m, BLASLONG n, BLASLONG dummy1, FLOAT alpha, 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[4];
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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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BLASLONG lda4 = 4 * lda;
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BLASLONG lda8 = 8 * lda;
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FLOAT xbuffer[8],*ybuffer;
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if ( m < 1 ) return(0);
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if ( n < 1 ) return(0);
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ybuffer = buffer;
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if ( inc_x == 1 )
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{
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n1 = n / 8 ;
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n2 = n % 8 ;
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}
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else
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{
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n1 = n / 4 ;
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n2 = n % 4 ;
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}
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m1 = m - ( m % 4 );
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m2 = (m % NBMAX) - (m % 4) ;
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y_ptr = y;
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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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a_ptr = a;
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x_ptr = x;
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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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memset(ybuffer,0,NB*4);
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if ( inc_x == 1 )
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{
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for( i = 0; i < n1 ; i++)
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{
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sgemv_kernel_4x8(NB,ap,x_ptr,ybuffer,lda4);
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ap[0] += lda8;
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ap[1] += lda8;
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ap[2] += lda8;
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ap[3] += lda8;
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a_ptr += lda8;
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x_ptr += 8;
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}
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/*
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for( i = 0; i < n1 ; i++)
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{
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sgemv_kernel_4x4(NB,ap,x_ptr,ybuffer);
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ap[0] += lda4;
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ap[1] += lda4;
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ap[2] += lda4;
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ap[3] += lda4;
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a_ptr += lda4;
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x_ptr += 4;
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}
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*/
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for( i = 0; i < n2 ; i++)
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{
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xbuffer[0] = x_ptr[0];
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x_ptr += inc_x;
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sgemv_kernel_4x1(NB,a_ptr,xbuffer,ybuffer);
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a_ptr += lda;
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}
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}
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else
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{
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for( i = 0; i < n1 ; i++)
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{
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xbuffer[0] = x_ptr[0];
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x_ptr += inc_x;
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xbuffer[1] = x_ptr[0];
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x_ptr += inc_x;
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xbuffer[2] = x_ptr[0];
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x_ptr += inc_x;
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xbuffer[3] = x_ptr[0];
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x_ptr += inc_x;
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sgemv_kernel_4x4(NB,ap,xbuffer,ybuffer);
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ap[0] += lda4;
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ap[1] += lda4;
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ap[2] += lda4;
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ap[3] += lda4;
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a_ptr += lda4;
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}
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for( i = 0; i < n2 ; i++)
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{
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xbuffer[0] = x_ptr[0];
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x_ptr += inc_x;
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sgemv_kernel_4x1(NB,a_ptr,xbuffer,ybuffer);
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a_ptr += lda;
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}
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}
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add_y(NB,ybuffer,y_ptr,inc_y,&alpha);
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a += NB;
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y_ptr += NB * inc_y;
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}
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j=0;
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while ( j < (m % 4))
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{
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a_ptr = a;
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x_ptr = x;
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FLOAT temp = 0.0;
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for( i = 0; i < n; i++ )
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{
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temp += a_ptr[0] * x_ptr[0];
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a_ptr += lda;
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x_ptr += inc_x;
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}
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y_ptr[0] += alpha * temp;
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y_ptr += inc_y;
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a++;
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j++;
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}
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return(0);
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}
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@ -0,0 +1,185 @@
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/***************************************************************************
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Copyright (c) 2014, The OpenBLAS Project
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All rights reserved.
|
||||
Redistribution and use in source and binary forms, with or without
|
||||
modification, are permitted provided that the following conditions are
|
||||
met:
|
||||
1. Redistributions of source code must retain the above copyright
|
||||
notice, this list of conditions and the following disclaimer.
|
||||
2. Redistributions in binary form must reproduce the above copyright
|
||||
notice, this list of conditions and the following disclaimer in
|
||||
the documentation and/or other materials provided with the
|
||||
distribution.
|
||||
3. Neither the name of the OpenBLAS project nor the names of
|
||||
its contributors may be used to endorse or promote products
|
||||
derived from this software without specific prior written permission.
|
||||
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
||||
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBLAS PROJECT OR CONTRIBUTORS BE
|
||||
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
||||
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
||||
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
||||
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
|
||||
USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*****************************************************************************/
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#define HAVE_KERNEL_4x8 1
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static void sgemv_kernel_4x8( BLASLONG n, FLOAT **ap, FLOAT *x, FLOAT *y, BLASLONG lda4) __attribute__ ((noinline));
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static void sgemv_kernel_4x8( BLASLONG n, FLOAT **ap, FLOAT *x, FLOAT *y, BLASLONG lda4)
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{
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BLASLONG register i = 0;
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__asm__ __volatile__
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(
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"movss (%2), %%xmm12 \n\t" // x0
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"movss 4(%2), %%xmm13 \n\t" // x1
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"movss 8(%2), %%xmm14 \n\t" // x2
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"movss 12(%2), %%xmm15 \n\t" // x3
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"shufps $0, %%xmm12, %%xmm12\n\t"
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"shufps $0, %%xmm13, %%xmm13\n\t"
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"shufps $0, %%xmm14, %%xmm14\n\t"
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"shufps $0, %%xmm15, %%xmm15\n\t"
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"movss 16(%2), %%xmm0 \n\t" // x4
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"movss 20(%2), %%xmm1 \n\t" // x5
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"movss 24(%2), %%xmm2 \n\t" // x6
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"movss 28(%2), %%xmm3 \n\t" // x7
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"shufps $0, %%xmm0 , %%xmm0 \n\t"
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"shufps $0, %%xmm1 , %%xmm1 \n\t"
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"shufps $0, %%xmm2 , %%xmm2 \n\t"
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"shufps $0, %%xmm3 , %%xmm3 \n\t"
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".align 16 \n\t"
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".L01LOOP%=: \n\t"
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"movups (%3,%0,4), %%xmm4 \n\t" // 4 * y
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"xorps %%xmm5 , %%xmm5 \n\t"
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"movups (%4,%0,4), %%xmm8 \n\t"
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"movups (%5,%0,4), %%xmm9 \n\t"
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"movups (%6,%0,4), %%xmm10 \n\t"
|
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"movups (%7,%0,4), %%xmm11 \n\t"
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"mulps %%xmm12, %%xmm8 \n\t"
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"mulps %%xmm13, %%xmm9 \n\t"
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"mulps %%xmm14, %%xmm10 \n\t"
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"mulps %%xmm15, %%xmm11 \n\t"
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"addps %%xmm8 , %%xmm4 \n\t"
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"addps %%xmm9 , %%xmm5 \n\t"
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"addps %%xmm10, %%xmm4 \n\t"
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"addps %%xmm11, %%xmm5 \n\t"
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"movups (%4,%8,4), %%xmm8 \n\t"
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"movups (%5,%8,4), %%xmm9 \n\t"
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"movups (%6,%8,4), %%xmm10 \n\t"
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"movups (%7,%8,4), %%xmm11 \n\t"
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"mulps %%xmm0 , %%xmm8 \n\t"
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"mulps %%xmm1 , %%xmm9 \n\t"
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"mulps %%xmm2 , %%xmm10 \n\t"
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||||
"mulps %%xmm3 , %%xmm11 \n\t"
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"addq $4 , %8 \n\t"
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"addps %%xmm8 , %%xmm4 \n\t"
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||||
"addps %%xmm9 , %%xmm5 \n\t"
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||||
"addq $4 , %0 \n\t"
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"addps %%xmm10, %%xmm4 \n\t"
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||||
"addps %%xmm11, %%xmm5 \n\t"
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||||
"subq $4 , %1 \n\t"
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||||
|
||||
"addps %%xmm4 , %%xmm5 \n\t"
|
||||
"movups %%xmm5 , -16(%3,%0,4) \n\t" // 4 * y
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"jnz .L01LOOP%= \n\t"
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||||
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||||
:
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:
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"r" (i), // 0
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"r" (n), // 1
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"r" (x), // 2
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"r" (y), // 3
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||||
"r" (ap[0]), // 4
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"r" (ap[1]), // 5
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||||
"r" (ap[2]), // 6
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||||
"r" (ap[3]), // 7
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||||
"r" (lda4) // 8
|
||||
: "cc",
|
||||
"%xmm0", "%xmm1",
|
||||
"%xmm2", "%xmm3",
|
||||
"%xmm4", "%xmm5",
|
||||
"%xmm8", "%xmm9", "%xmm10", "%xmm11",
|
||||
"%xmm12", "%xmm13", "%xmm14", "%xmm15",
|
||||
"memory"
|
||||
);
|
||||
|
||||
}
|
||||
|
||||
|
||||
|
||||
|
||||
#define HAVE_KERNEL_4x4 1
|
||||
static void sgemv_kernel_4x4( BLASLONG n, FLOAT **ap, FLOAT *x, FLOAT *y) __attribute__ ((noinline));
|
||||
|
||||
static void sgemv_kernel_4x4( BLASLONG n, FLOAT **ap, FLOAT *x, FLOAT *y)
|
||||
{
|
||||
|
||||
BLASLONG register i = 0;
|
||||
|
||||
__asm__ __volatile__
|
||||
(
|
||||
"movss (%2), %%xmm12 \n\t" // x0
|
||||
"movss 4(%2), %%xmm13 \n\t" // x1
|
||||
"movss 8(%2), %%xmm14 \n\t" // x2
|
||||
"movss 12(%2), %%xmm15 \n\t" // x3
|
||||
"shufps $0, %%xmm12, %%xmm12\n\t"
|
||||
"shufps $0, %%xmm13, %%xmm13\n\t"
|
||||
"shufps $0, %%xmm14, %%xmm14\n\t"
|
||||
"shufps $0, %%xmm15, %%xmm15\n\t"
|
||||
|
||||
".align 16 \n\t"
|
||||
".L01LOOP%=: \n\t"
|
||||
"movups (%3,%0,4), %%xmm4 \n\t" // 4 * y
|
||||
|
||||
"movups (%4,%0,4), %%xmm8 \n\t"
|
||||
"movups (%5,%0,4), %%xmm9 \n\t"
|
||||
"movups (%6,%0,4), %%xmm10 \n\t"
|
||||
"movups (%7,%0,4), %%xmm11 \n\t"
|
||||
"mulps %%xmm12, %%xmm8 \n\t"
|
||||
"mulps %%xmm13, %%xmm9 \n\t"
|
||||
"mulps %%xmm14, %%xmm10 \n\t"
|
||||
"mulps %%xmm15, %%xmm11 \n\t"
|
||||
"addps %%xmm8 , %%xmm4 \n\t"
|
||||
"addq $4 , %0 \n\t"
|
||||
"addps %%xmm9 , %%xmm4 \n\t"
|
||||
"subq $4 , %1 \n\t"
|
||||
"addps %%xmm10 , %%xmm4 \n\t"
|
||||
"addps %%xmm4 , %%xmm11 \n\t"
|
||||
|
||||
"movups %%xmm11, -16(%3,%0,4) \n\t" // 4 * y
|
||||
|
||||
"jnz .L01LOOP%= \n\t"
|
||||
|
||||
:
|
||||
:
|
||||
"r" (i), // 0
|
||||
"r" (n), // 1
|
||||
"r" (x), // 2
|
||||
"r" (y), // 3
|
||||
"r" (ap[0]), // 4
|
||||
"r" (ap[1]), // 5
|
||||
"r" (ap[2]), // 6
|
||||
"r" (ap[3]) // 7
|
||||
: "cc",
|
||||
"%xmm4", "%xmm5",
|
||||
"%xmm6", "%xmm7",
|
||||
"%xmm8", "%xmm9", "%xmm10", "%xmm11",
|
||||
"%xmm12", "%xmm13", "%xmm14", "%xmm15",
|
||||
"memory"
|
||||
);
|
||||
|
||||
}
|
||||
|
||||
|
||||
Loading…
Reference in New Issue