optimized sgemv_n kernel for small sizes
This commit is contained in:
wernsaar
parent
3a5d8dbff9
commit
7f910010a0
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@ -185,17 +185,8 @@ int CNAME(BLASLONG m, BLASLONG n, BLASLONG dummy1, FLOAT alpha, FLOAT *a, BLASLO
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ybuffer = buffer;
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if ( inc_x == 1 )
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{
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n1 = n >> 3 ;
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n2 = n & 7 ;
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}
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else
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{
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n1 = n >> 2 ;
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n2 = n & 3 ;
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}
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n1 = n >> 3 ;
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n2 = n & 7 ;
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m3 = m & 3 ;
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m1 = m & -4 ;
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@ -267,6 +258,32 @@ int CNAME(BLASLONG m, BLASLONG n, BLASLONG dummy1, FLOAT alpha, FLOAT *a, BLASLO
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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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xbuffer[4] = x_ptr[0];
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x_ptr += inc_x;
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xbuffer[5] = x_ptr[0];
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x_ptr += inc_x;
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xbuffer[6] = x_ptr[0];
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x_ptr += inc_x;
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xbuffer[7] = x_ptr[0];
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x_ptr += inc_x;
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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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}
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if ( n2 & 4 )
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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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@ -284,7 +301,7 @@ int CNAME(BLASLONG m, BLASLONG n, BLASLONG dummy1, FLOAT alpha, FLOAT *a, BLASLO
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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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for( i = 0; i < ( n2 & 3) ; 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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@ -0,0 +1,254 @@
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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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#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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"vbroadcastss (%2), %%xmm12 \n\t" // x0
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"vbroadcastss 4(%2), %%xmm13 \n\t" // x1
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"vbroadcastss 8(%2), %%xmm14 \n\t" // x2
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"vbroadcastss 12(%2), %%xmm15 \n\t" // x3
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"vbroadcastss 16(%2), %%xmm0 \n\t" // x4
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"vbroadcastss 20(%2), %%xmm1 \n\t" // x5
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"vbroadcastss 24(%2), %%xmm2 \n\t" // x6
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"vbroadcastss 28(%2), %%xmm3 \n\t" // x7
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"testq $0x04, %1 \n\t"
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"jz .L08LABEL%= \n\t"
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"vxorps %%xmm5, %%xmm5 , %%xmm5 \n\t"
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"vmovups (%3,%0,4), %%xmm4 \n\t" // 4 * y
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"vfmaddps %%xmm4, (%4,%0,4), %%xmm12, %%xmm4 \n\t"
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"vfmaddps %%xmm5, (%5,%0,4), %%xmm13, %%xmm5 \n\t"
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"vfmaddps %%xmm4, (%6,%0,4), %%xmm14, %%xmm4 \n\t"
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"vfmaddps %%xmm5, (%7,%0,4), %%xmm15, %%xmm5 \n\t"
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"addq $4 , %0 \n\t"
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"vfmaddps %%xmm4, (%4,%8,4), %%xmm0 , %%xmm4 \n\t"
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"vfmaddps %%xmm5, (%5,%8,4), %%xmm1 , %%xmm5 \n\t"
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"vfmaddps %%xmm4, (%6,%8,4), %%xmm2 , %%xmm4 \n\t"
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"vfmaddps %%xmm5, (%7,%8,4), %%xmm3 , %%xmm5 \n\t"
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"addq $4 , %8 \n\t"
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"vaddps %%xmm4, %%xmm5, %%xmm6 \n\t"
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"vmovups %%xmm6, -16(%3,%0,4) \n\t" // 4 * y
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"subq $4 , %1 \n\t"
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".L08LABEL%=: \n\t"
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"testq $0x08, %1 \n\t"
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"jz .L16LABEL%= \n\t"
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"vmovups (%3,%0,4), %%xmm4 \n\t" // 4 * y
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"vmovups 16(%3,%0,4), %%xmm5 \n\t" // 4 * y
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"vfmaddps %%xmm4, (%4,%0,4), %%xmm12, %%xmm4 \n\t"
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"vfmaddps %%xmm5, 16(%4,%0,4), %%xmm12, %%xmm5 \n\t"
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"vfmaddps %%xmm4, (%5,%0,4), %%xmm13, %%xmm4 \n\t"
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"vfmaddps %%xmm5, 16(%5,%0,4), %%xmm13, %%xmm5 \n\t"
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"vfmaddps %%xmm4, (%6,%0,4), %%xmm14, %%xmm4 \n\t"
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"vfmaddps %%xmm5, 16(%6,%0,4), %%xmm14, %%xmm5 \n\t"
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"vfmaddps %%xmm4, (%7,%0,4), %%xmm15, %%xmm4 \n\t"
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"vfmaddps %%xmm5, 16(%7,%0,4), %%xmm15, %%xmm5 \n\t"
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"vfmaddps %%xmm4, (%4,%8,4), %%xmm0 , %%xmm4 \n\t"
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"vfmaddps %%xmm5, 16(%4,%8,4), %%xmm0 , %%xmm5 \n\t"
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"vfmaddps %%xmm4, (%5,%8,4), %%xmm1 , %%xmm4 \n\t"
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"vfmaddps %%xmm5, 16(%5,%8,4), %%xmm1 , %%xmm5 \n\t"
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"vfmaddps %%xmm4, (%6,%8,4), %%xmm2 , %%xmm4 \n\t"
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"vfmaddps %%xmm5, 16(%6,%8,4), %%xmm2 , %%xmm5 \n\t"
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"vfmaddps %%xmm4, (%7,%8,4), %%xmm3 , %%xmm4 \n\t"
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"vfmaddps %%xmm5, 16(%7,%8,4), %%xmm3 , %%xmm5 \n\t"
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"vmovups %%xmm4, (%3,%0,4) \n\t" // 4 * y
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"vmovups %%xmm5, 16(%3,%0,4) \n\t" // 4 * y
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"addq $8 , %0 \n\t"
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"addq $8 , %8 \n\t"
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"subq $8 , %1 \n\t"
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".L16LABEL%=: \n\t"
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"cmpq $0, %1 \n\t"
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"je .L16END%= \n\t"
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".align 16 \n\t"
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".L01LOOP%=: \n\t"
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"vmovups (%3,%0,4), %%xmm4 \n\t" // 4 * y
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".align 2 \n\t"
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"vmovups 16(%3,%0,4), %%xmm5 \n\t" // 4 * y
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"vmovups 32(%3,%0,4), %%xmm6 \n\t" // 4 * y
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"vmovups 48(%3,%0,4), %%xmm7 \n\t" // 4 * y
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"prefetcht0 192(%4,%0,4) \n\t"
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"vfmaddps %%xmm4, (%4,%0,4), %%xmm12, %%xmm4 \n\t"
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"vfmaddps %%xmm5, 16(%4,%0,4), %%xmm12, %%xmm5 \n\t"
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"prefetcht0 192(%5,%0,4) \n\t"
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"vfmaddps %%xmm4, (%5,%0,4), %%xmm13, %%xmm4 \n\t"
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"vfmaddps %%xmm5, 16(%5,%0,4), %%xmm13, %%xmm5 \n\t"
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"prefetcht0 192(%6,%0,4) \n\t"
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"vfmaddps %%xmm4, (%6,%0,4), %%xmm14, %%xmm4 \n\t"
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"vfmaddps %%xmm5, 16(%6,%0,4), %%xmm14, %%xmm5 \n\t"
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"prefetcht0 192(%7,%0,4) \n\t"
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"vfmaddps %%xmm4, (%7,%0,4), %%xmm15, %%xmm4 \n\t"
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".align 2 \n\t"
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"vfmaddps %%xmm5, 16(%7,%0,4), %%xmm15, %%xmm5 \n\t"
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"vfmaddps %%xmm6, 32(%4,%0,4), %%xmm12, %%xmm6 \n\t"
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"vfmaddps %%xmm7, 48(%4,%0,4), %%xmm12, %%xmm7 \n\t"
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"vfmaddps %%xmm6, 32(%5,%0,4), %%xmm13, %%xmm6 \n\t"
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"vfmaddps %%xmm7, 48(%5,%0,4), %%xmm13, %%xmm7 \n\t"
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"vfmaddps %%xmm6, 32(%6,%0,4), %%xmm14, %%xmm6 \n\t"
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"vfmaddps %%xmm7, 48(%6,%0,4), %%xmm14, %%xmm7 \n\t"
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"vfmaddps %%xmm6, 32(%7,%0,4), %%xmm15, %%xmm6 \n\t"
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"vfmaddps %%xmm7, 48(%7,%0,4), %%xmm15, %%xmm7 \n\t"
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"prefetcht0 192(%4,%8,4) \n\t"
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"vfmaddps %%xmm4, (%4,%8,4), %%xmm0 , %%xmm4 \n\t"
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"vfmaddps %%xmm5, 16(%4,%8,4), %%xmm0 , %%xmm5 \n\t"
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"prefetcht0 192(%5,%8,4) \n\t"
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"vfmaddps %%xmm4, (%5,%8,4), %%xmm1 , %%xmm4 \n\t"
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"vfmaddps %%xmm5, 16(%5,%8,4), %%xmm1 , %%xmm5 \n\t"
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"prefetcht0 192(%6,%8,4) \n\t"
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"vfmaddps %%xmm4, (%6,%8,4), %%xmm2 , %%xmm4 \n\t"
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"vfmaddps %%xmm5, 16(%6,%8,4), %%xmm2 , %%xmm5 \n\t"
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"prefetcht0 192(%7,%8,4) \n\t"
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"vfmaddps %%xmm4, (%7,%8,4), %%xmm3 , %%xmm4 \n\t"
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"vfmaddps %%xmm5, 16(%7,%8,4), %%xmm3 , %%xmm5 \n\t"
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"vfmaddps %%xmm6, 32(%4,%8,4), %%xmm0 , %%xmm6 \n\t"
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"vfmaddps %%xmm7, 48(%4,%8,4), %%xmm0 , %%xmm7 \n\t"
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"vfmaddps %%xmm6, 32(%5,%8,4), %%xmm1 , %%xmm6 \n\t"
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"vfmaddps %%xmm7, 48(%5,%8,4), %%xmm1 , %%xmm7 \n\t"
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"addq $16, %0 \n\t"
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"vfmaddps %%xmm6, 32(%6,%8,4), %%xmm2 , %%xmm6 \n\t"
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"vfmaddps %%xmm7, 48(%6,%8,4), %%xmm2 , %%xmm7 \n\t"
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"vfmaddps %%xmm6, 32(%7,%8,4), %%xmm3 , %%xmm6 \n\t"
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"vfmaddps %%xmm7, 48(%7,%8,4), %%xmm3 , %%xmm7 \n\t"
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"addq $16, %8 \n\t"
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"vmovups %%xmm4,-64(%3,%0,4) \n\t" // 4 * y
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"vmovups %%xmm5,-48(%3,%0,4) \n\t" // 4 * y
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"subq $16, %1 \n\t"
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"vmovups %%xmm6,-32(%3,%0,4) \n\t" // 4 * y
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"vmovups %%xmm7,-16(%3,%0,4) \n\t" // 4 * y
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"jnz .L01LOOP%= \n\t"
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".L16END%=: \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" (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
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: "cc",
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"%xmm0", "%xmm1",
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"%xmm2", "%xmm3",
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"%xmm4", "%xmm5",
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"%xmm6", "%xmm7",
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"%xmm12", "%xmm13", "%xmm14", "%xmm15",
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"memory"
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);
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}
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#define HAVE_KERNEL_4x4 1
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static void sgemv_kernel_4x4( BLASLONG n, FLOAT **ap, FLOAT *x, FLOAT *y) __attribute__ ((noinline));
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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 register i = 0;
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__asm__ __volatile__
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(
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"vbroadcastss (%2), %%xmm12 \n\t" // x0
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"vbroadcastss 4(%2), %%xmm13 \n\t" // x1
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"vbroadcastss 8(%2), %%xmm14 \n\t" // x2
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"vbroadcastss 12(%2), %%xmm15 \n\t" // x3
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".align 16 \n\t"
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".L01LOOP%=: \n\t"
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"vmovups (%3,%0,4), %%xmm4 \n\t" // 4 * y
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"vxorps %%xmm5, %%xmm5 , %%xmm5 \n\t"
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"vfmaddps %%xmm4, (%4,%0,4), %%xmm12, %%xmm4 \n\t"
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"vfmaddps %%xmm5, (%5,%0,4), %%xmm13, %%xmm5 \n\t"
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"vfmaddps %%xmm4, (%6,%0,4), %%xmm14, %%xmm4 \n\t"
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"vfmaddps %%xmm5, (%7,%0,4), %%xmm15, %%xmm5 \n\t"
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"vaddps %%xmm4, %%xmm5, %%xmm6 \n\t"
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"vmovups %%xmm6, (%3,%0,4) \n\t" // 4 * y
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"addq $4 , %0 \n\t"
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"subq $4 , %1 \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" (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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: "cc",
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"%xmm4", "%xmm5",
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"%xmm6", "%xmm7",
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"%xmm12", "%xmm13", "%xmm14", "%xmm15",
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"memory"
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);
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}
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