From c06f9986d449bdaa109f742a3e5f7114b4ff50ad Mon Sep 17 00:00:00 2001 From: wernsaar Date: Sun, 20 Jul 2014 10:21:08 +0200 Subject: [PATCH] added sgemv_t microkernel for sandybridge --- kernel/x86_64/sgemv_t_avx.c | 2 + kernel/x86_64/sgemv_t_microk_sandy.c | 105 +++++++++++++++++++++++++++ 2 files changed, 107 insertions(+) create mode 100644 kernel/x86_64/sgemv_t_microk_sandy.c diff --git a/kernel/x86_64/sgemv_t_avx.c b/kernel/x86_64/sgemv_t_avx.c index c9cdb60cd..7a9efa35e 100644 --- a/kernel/x86_64/sgemv_t_avx.c +++ b/kernel/x86_64/sgemv_t_avx.c @@ -30,6 +30,8 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. #if defined(BULLDOZER) || defined(PILEDRIVER) #include "sgemv_t_microk_bulldozer.c" +#else +#include "sgemv_t_microk_sandy.c" #endif static void copy_x(BLASLONG n, FLOAT *src, FLOAT *dest, BLASLONG inc_src) diff --git a/kernel/x86_64/sgemv_t_microk_sandy.c b/kernel/x86_64/sgemv_t_microk_sandy.c new file mode 100644 index 000000000..1745db3a7 --- /dev/null +++ b/kernel/x86_64/sgemv_t_microk_sandy.c @@ -0,0 +1,105 @@ +/*************************************************************************** +Copyright (c) 2014, The OpenBLAS Project +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. +*****************************************************************************/ + +static void sgemv_kernel_16( long n, float alpha, float *a, long lda, float *x, float *y) +{ + + //n = n / 16; + + __asm__ __volatile__ + ( + "movq %0, %%rax\n\t" // n -> rax + "vmovss %1, %%xmm1\n\t" // alpha -> xmm1 + "movq %2, %%rsi\n\t" // adress of a -> rsi + "movq %3, %%rcx\n\t" // value of lda > rcx + "movq %4, %%rdi\n\t" // adress of x -> rdi + "movq %5, %%rdx\n\t" // adress of y -> rdx + + "leaq (, %%rcx,4), %%rcx \n\t" // scale lda by size of float + "leaq (%%rsi,%%rcx,1), %%r8 \n\t" // pointer to next line + + "vxorps %%xmm12, %%xmm12, %%xmm12\n\t" // set to zero + "vxorps %%xmm13, %%xmm13, %%xmm13\n\t" // set to zero + "vxorps %%xmm14, %%xmm14, %%xmm14\n\t" // set to zero + "vxorps %%xmm15, %%xmm15, %%xmm15\n\t" // set to zero + + "sarq $4, %%rax \n\t" // n = n / 16 + + ".align 16 \n\t" + ".L01LOOP%=: \n\t" + // "prefetcht0 512(%%rsi) \n\t" + "prefetcht0 (%%r8) \n\t" //prefetch next line of a + "vmovups (%%rsi), %%xmm4 \n\t" + "vmovups 4*4(%%rsi), %%xmm5 \n\t" + "vmovups 8*4(%%rsi), %%xmm6 \n\t" + "vmovups 12*4(%%rsi), %%xmm7 \n\t" + + "vmulps 0*4(%%rdi), %%xmm4, %%xmm8 \n\t" // multiply a and c and add to temp + "vmulps 4*4(%%rdi), %%xmm5, %%xmm9 \n\t" // multiply a and c and add to temp + "vmulps 8*4(%%rdi), %%xmm6, %%xmm10\n\t" // multiply a and c and add to temp + "vmulps 12*4(%%rdi), %%xmm7, %%xmm11\n\t" // multiply a and c and add to temp + + "vaddps %%xmm12, %%xmm8 , %%xmm12\n\t" + "vaddps %%xmm13, %%xmm9 , %%xmm13\n\t" + "vaddps %%xmm14, %%xmm10, %%xmm14\n\t" + "vaddps %%xmm15, %%xmm11, %%xmm15\n\t" + + "addq $16*4 , %%r8 \n\t" // increment prefetch pointer + "addq $16*4 , %%rsi \n\t" // increment pointer of a + "addq $16*4 , %%rdi \n\t" // increment pointer of c + "dec %%rax \n\t" // n = n -1 + "jnz .L01LOOP%= \n\t" + + "vaddps %%xmm12, %%xmm14, %%xmm12\n\t" + "vaddps %%xmm13, %%xmm15, %%xmm13\n\t" + "vaddps %%xmm12, %%xmm13, %%xmm12\n\t" + "vhaddps %%xmm12, %%xmm12, %%xmm12\n\t" + "vhaddps %%xmm12, %%xmm12, %%xmm12\n\t" + + "vfmaddss (%%rdx), %%xmm12, %%xmm1, %%xmm12\n\t" + "vmovss %%xmm12, (%%rdx) \n\t" // store temp -> y + + : + : + "m" (n), // 0 + "m" (alpha), // 1 + "m" (a), // 2 + "m" (lda), // 3 + "m" (x), // 4 + "m" (y) // 5 + : "%rax", "%rcx", "%rdx", "%rsi", "%rdi", "%r8", "cc", + "%xmm0", "%xmm1", + "%xmm4", "%xmm5", "%xmm6", "%xmm7", + "%xmm8", "%xmm9", "%xmm10", "%xmm11", + "%xmm12", "%xmm13", "%xmm14", "%xmm15", + "memory" + ); + +} + + +