151 lines
5.6 KiB
C
151 lines
5.6 KiB
C
/***************************************************************************
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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_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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"vzeroupper \n\t"
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"vxorps %%ymm4 , %%ymm4, %%ymm4 \n\t"
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"vxorps %%ymm5 , %%ymm5, %%ymm5 \n\t"
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"vxorps %%ymm6 , %%ymm6, %%ymm6 \n\t"
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"vxorps %%ymm7 , %%ymm7, %%ymm7 \n\t"
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"testq $0x04, %1 \n\t"
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"jz 2f \n\t"
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"vmovups (%2,%0,4), %%xmm12 \n\t" // 4 * x
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"vfmadd231ps (%4,%0,4), %%xmm12, %%xmm4 \n\t"
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"vfmadd231ps (%5,%0,4), %%xmm12, %%xmm5 \n\t"
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"vfmadd231ps (%6,%0,4), %%xmm12, %%xmm6 \n\t"
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"vfmadd231ps (%7,%0,4), %%xmm12, %%xmm7 \n\t"
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"addq $4 , %0 \n\t"
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"subq $4 , %1 \n\t"
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"2: \n\t"
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"testq $0x08, %1 \n\t"
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"jz 3f \n\t"
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"vmovups (%2,%0,4), %%ymm12 \n\t" // 8 * x
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"vfmadd231ps (%4,%0,4), %%ymm12, %%ymm4 \n\t"
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"vfmadd231ps (%5,%0,4), %%ymm12, %%ymm5 \n\t"
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"vfmadd231ps (%6,%0,4), %%ymm12, %%ymm6 \n\t"
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"vfmadd231ps (%7,%0,4), %%ymm12, %%ymm7 \n\t"
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"addq $8 , %0 \n\t"
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"subq $8 , %1 \n\t"
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"3: \n\t"
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"cmpq $0, %1 \n\t"
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"je 4f \n\t"
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// ".align 16 \n\t"
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"1: \n\t"
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"prefetcht0 384(%2,%0,4) \n\t"
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"vmovups (%2,%0,4), %%ymm12 \n\t" // 8 * x
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"vmovups 32(%2,%0,4), %%ymm13 \n\t" // 8 * x
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"prefetcht0 384(%4,%0,4) \n\t"
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"vfmadd231ps (%4,%0,4), %%ymm12, %%ymm4 \n\t"
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"vfmadd231ps (%5,%0,4), %%ymm12, %%ymm5 \n\t"
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"prefetcht0 384(%5,%0,4) \n\t"
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"vfmadd231ps 32(%4,%0,4), %%ymm13, %%ymm4 \n\t"
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"vfmadd231ps 32(%5,%0,4), %%ymm13, %%ymm5 \n\t"
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"prefetcht0 384(%6,%0,4) \n\t"
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"vfmadd231ps (%6,%0,4), %%ymm12, %%ymm6 \n\t"
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"vfmadd231ps (%7,%0,4), %%ymm12, %%ymm7 \n\t"
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"prefetcht0 384(%7,%0,4) \n\t"
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"vfmadd231ps 32(%6,%0,4), %%ymm13, %%ymm6 \n\t"
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"vfmadd231ps 32(%7,%0,4), %%ymm13, %%ymm7 \n\t"
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"addq $16, %0 \n\t"
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"subq $16, %1 \n\t"
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"jnz 1b \n\t"
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"4: \n\t"
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"vextractf128 $1 , %%ymm4, %%xmm12 \n\t"
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"vextractf128 $1 , %%ymm5, %%xmm13 \n\t"
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"vextractf128 $1 , %%ymm6, %%xmm14 \n\t"
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"vextractf128 $1 , %%ymm7, %%xmm15 \n\t"
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"vaddps %%xmm4, %%xmm12, %%xmm4 \n\t"
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"vaddps %%xmm5, %%xmm13, %%xmm5 \n\t"
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"vaddps %%xmm6, %%xmm14, %%xmm6 \n\t"
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"vaddps %%xmm7, %%xmm15, %%xmm7 \n\t"
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"vhaddps %%xmm4, %%xmm4, %%xmm4 \n\t"
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"vhaddps %%xmm5, %%xmm5, %%xmm5 \n\t"
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"vhaddps %%xmm6, %%xmm6, %%xmm6 \n\t"
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"vhaddps %%xmm7, %%xmm7, %%xmm7 \n\t"
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"vhaddps %%xmm4, %%xmm4, %%xmm4 \n\t"
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"vhaddps %%xmm5, %%xmm5, %%xmm5 \n\t"
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"vhaddps %%xmm6, %%xmm6, %%xmm6 \n\t"
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"vhaddps %%xmm7, %%xmm7, %%xmm7 \n\t"
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"vmovss %%xmm4, (%3) \n\t"
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"vmovss %%xmm5, 4(%3) \n\t"
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"vmovss %%xmm6, 8(%3) \n\t"
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"vmovss %%xmm7, 12(%3) \n\t"
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"vzeroupper \n\t"
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:
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"+r" (i), // 0
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"+r" (n) // 1
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:
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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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"%xmm0", "%xmm1", "%xmm2", "%xmm3",
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"%xmm4", "%xmm5", "%xmm6", "%xmm7",
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"%xmm8", "%xmm9", "%xmm10", "%xmm11",
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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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