209 lines
6.5 KiB
C
209 lines
6.5 KiB
C
/***************************************************************************
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Copyright (c) 2013-2016, 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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/**************************************************************************************
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* 2016/03/27 Werner Saar (wernsaar@googlemail.com)
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*
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* I don't use fused multiply-add ( precision problems with lapack )
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*
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* BLASTEST : OK
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* CTEST : OK
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* TEST : OK
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* LAPACK-TEST : OK
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**************************************************************************************/
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#define HAVE_KERNEL_16 1
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static void srot_kernel_16( BLASLONG n, FLOAT *x, FLOAT *y, FLOAT *c, FLOAT *s) __attribute__ ((noinline));
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static void srot_kernel_16( BLASLONG n, FLOAT *x, FLOAT *y, FLOAT *c, FLOAT *s)
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{
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BLASLONG i = n;
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BLASLONG o16 = 16;
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BLASLONG o32 = 32;
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BLASLONG o48 = 48;
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FLOAT *x1=x;
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FLOAT *y1=y;
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FLOAT *x2=x+1;
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FLOAT *y2=y+1;
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__asm__ __volatile__
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(
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"lxvw4x 36 , 0, %3 \n\t" // load c
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"lxvw4x 37 , 0, %4 \n\t" // load s
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"addi %8 , %8, -4 \n\t"
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"addi %9 , %9, -4 \n\t"
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"lxvw4x 32, 0, %1 \n\t" // load x
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"lxvw4x 33, %5, %1 \n\t"
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"lxvw4x 34, %6, %1 \n\t"
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"lxvw4x 35, %7, %1 \n\t"
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"lxvw4x 40, 0, %2 \n\t" // load y
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"lxvw4x 41, %5, %2 \n\t"
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"lxvw4x 42, %6, %2 \n\t"
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"lxvw4x 43, %7, %2 \n\t"
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"addi %1, %1, 64 \n\t"
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"addi %2, %2, 64 \n\t"
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"addic. %0 , %0 , -16 \n\t"
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"ble 2f \n\t"
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".align 5 \n\t"
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"1: \n\t"
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"xvmulsp 48, 32, 36 \n\t" // c * x
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"xvmulsp 49, 33, 36 \n\t"
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"xvmulsp 50, 34, 36 \n\t"
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"xvmulsp 51, 35, 36 \n\t"
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"xvmulsp 56, 40, 36 \n\t" // c * y
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"xvmulsp 57, 41, 36 \n\t"
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"xvmulsp 58, 42, 36 \n\t"
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"xvmulsp 59, 43, 36 \n\t"
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"xvmulsp 52, 32, 37 \n\t" // s * x
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"xvmulsp 53, 33, 37 \n\t"
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"lxvw4x 32, 0, %1 \n\t" // load x
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"lxvw4x 33, %5, %1 \n\t"
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"xvmulsp 54, 34, 37 \n\t"
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"xvmulsp 55, 35, 37 \n\t"
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"lxvw4x 34, %6, %1 \n\t"
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"lxvw4x 35, %7, %1 \n\t"
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"xvmulsp 60, 40, 37 \n\t" // s * y
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"xvmulsp 61, 41, 37 \n\t"
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"lxvw4x 40, 0, %2 \n\t" // load y
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"lxvw4x 41, %5, %2 \n\t"
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"xvmulsp 62, 42, 37 \n\t"
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"xvmulsp 63, 43, 37 \n\t"
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"lxvw4x 42, %6, %2 \n\t"
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"lxvw4x 43, %7, %2 \n\t"
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"xvaddsp 48, 48 , 60 \n\t" // c * x + s * y
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"xvaddsp 49, 49 , 61 \n\t" // c * x + s * y
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"addi %1, %1, 64 \n\t"
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"addi %2, %2, 64 \n\t"
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"xvaddsp 50, 50 , 62 \n\t" // c * x + s * y
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"xvaddsp 51, 51 , 63 \n\t" // c * x + s * y
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"xvsubsp 56, 56 , 52 \n\t" // c * y - s * x
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"xvsubsp 57, 57 , 53 \n\t" // c * y - s * x
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"xvsubsp 58, 58 , 54 \n\t" // c * y - s * x
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"xvsubsp 59, 59 , 55 \n\t" // c * y - s * x
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"stxvw4x 48, 0, %8 \n\t" // store x
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"stxvw4x 49, %5, %8 \n\t"
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"stxvw4x 50, %6, %8 \n\t"
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"stxvw4x 51, %7, %8 \n\t"
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"stxvw4x 56, 0, %9 \n\t" // store y
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"stxvw4x 57, %5, %9 \n\t"
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"stxvw4x 58, %6, %9 \n\t"
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"stxvw4x 59, %7, %9 \n\t"
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"addi %8, %8, 64 \n\t"
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"addi %9, %9, 64 \n\t"
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"addic. %0 , %0 , -16 \n\t"
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"bgt 1b \n\t"
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"2: \n\t"
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"xvmulsp 48, 32, 36 \n\t" // c * x
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"xvmulsp 49, 33, 36 \n\t"
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"xvmulsp 50, 34, 36 \n\t"
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"xvmulsp 51, 35, 36 \n\t"
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"xvmulsp 56, 40, 36 \n\t" // c * y
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"xvmulsp 57, 41, 36 \n\t"
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"xvmulsp 58, 42, 36 \n\t"
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"xvmulsp 59, 43, 36 \n\t"
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"xvmulsp 52, 32, 37 \n\t" // s * x
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"xvmulsp 53, 33, 37 \n\t"
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"xvmulsp 54, 34, 37 \n\t"
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"xvmulsp 55, 35, 37 \n\t"
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"xvmulsp 60, 40, 37 \n\t" // s * y
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"xvmulsp 61, 41, 37 \n\t"
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"xvmulsp 62, 42, 37 \n\t"
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"xvmulsp 63, 43, 37 \n\t"
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"xvaddsp 48, 48 , 60 \n\t" // c * x + s * y
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"xvaddsp 49, 49 , 61 \n\t" // c * x + s * y
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"xvaddsp 50, 50 , 62 \n\t" // c * x + s * y
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"xvaddsp 51, 51 , 63 \n\t" // c * x + s * y
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"xvsubsp 56, 56 , 52 \n\t" // c * y - s * x
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"xvsubsp 57, 57 , 53 \n\t" // c * y - s * x
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"xvsubsp 58, 58 , 54 \n\t" // c * y - s * x
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"xvsubsp 59, 59 , 55 \n\t" // c * y - s * x
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"stxvw4x 48, 0, %8 \n\t" // store x
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"stxvw4x 49, %5, %8 \n\t"
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"stxvw4x 50, %6, %8 \n\t"
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"stxvw4x 51, %7, %8 \n\t"
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"stxvw4x 56, 0, %9 \n\t" // store y
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"stxvw4x 57, %5, %9 \n\t"
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"stxvw4x 58, %6, %9 \n\t"
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"stxvw4x 59, %7, %9 \n\t"
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:
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:
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"r" (i), // 0
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"r" (x1), // 1
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"r" (y1), // 2
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"r" (c), // 3
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"r" (s), // 4
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"r" (o16), // 5
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"r" (o32), // 6
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"r" (o48), // 7
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"r" (x2), // 8
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"r" (y2) // 9
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: "cr0", "%0", "%1" , "%2", "%8", "%9", "memory"
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);
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}
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