OpenBLAS/kernel/power/srot_microk_power10.c

/***************************************************************************
Copyright (c) 2021, 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.
*****************************************************************************/

#define HAVE_KERNEL_16 1

static void srot_kernel_16 (long n, float *x, float *y, float c, float s)
{
  __asm__
    (
       "xscvdpspn       36, %x5        \n\t"   // load c to all words
       "xxspltw         36, 36, 0       \n\t"

       "xscvdpspn       37, %x6        \n\t"   // load s to all words
       "xxspltw         37, 37, 0       \n\t"
       "lxvp            32, 0(%3)       \n\t"   // load x
       "lxvp            34, 32(%3)      \n\t"
       "lxvp            48, 0(%4)       \n\t"   // load y
       "lxvp            50, 32(%4)      \n\t"

       "addic.		%2, %2, -16	\n\t"
       "ble		two%=		\n\t"

       ".align	5		\n"
     "one%=:				\n\t"

       "xvmulsp		40, 32, 36	\n\t"	// c * x
       "xvmulsp		41, 33, 36	\n\t"
       "xvmulsp		42, 34, 36	\n\t"
       "xvmulsp		43, 35, 36	\n\t"

       "xvmulsp		44, 32, 37	\n\t"	// s * x
       "xvmulsp		45, 33, 37	\n\t"
       "xvmulsp		46, 34, 37	\n\t"
       "xvmulsp		47, 35, 37	\n\t"

       "lxvp            32, 64(%3)       \n\t"   // load x
       "lxvp            34, 96(%3)      \n\t"
       "xvmulsp		52, 48, 36	\n\t"	// c * y
       "xvmulsp		53, 49, 36	\n\t"
       "xvmulsp		54, 50, 36	\n\t"
       "xvmulsp		55, 51, 36	\n\t"

       "xvmulsp		38, 48, 37	\n\t"	// s * y
       "xvmulsp		39, 49, 37	\n\t"
       "xvmulsp		56, 50, 37	\n\t"
       "xvmulsp		57, 51, 37	\n\t"

       "lxvp            48, 64(%4)       \n\t"   // load y
       "lxvp            50, 96(%4)      \n\t"

       "xvaddsp		40, 40, 38	\n\t"	// c * x + s * y
       "xvaddsp		41, 41, 39	\n\t"	// c * x + s * y
       "xvaddsp		42, 42, 56	\n\t"	// c * x + s * y
       "xvaddsp		43, 43, 57	\n\t"	// c * x + s * y

       "stxvp           40, 0(%3)       \n\t"   // store x
       "stxvp           42, 32(%3)      \n\t"

       "xvsubsp         52, 52, 44      \n\t"   // c * y - s * x
       "xvsubsp         53, 53, 45      \n\t"   // c * y - s * x
       "xvsubsp         54, 54, 46      \n\t"   // c * y - s * x
       "xvsubsp         55, 55, 47      \n\t"   // c * y - s * x

       "stxvp           52, 0(%4)       \n\t"   // store y
       "stxvp           54, 32(%4)      \n\t"

       "addi		%3, %3, 64	\n\t"
       "addi		%4, %4, 64	\n\t"

       "addic.		%2, %2, -16	\n\t"
       "bgt		one%=		\n"

     "two%=:				\n\t"

       "xvmulsp		40, 32, 36	\n\t"	// c * x
       "xvmulsp		41, 33, 36	\n\t"
       "xvmulsp		42, 34, 36	\n\t"
       "xvmulsp		43, 35, 36	\n\t"

       "xvmulsp         52, 48, 36      \n\t"   // c * y
       "xvmulsp         53, 49, 36      \n\t"
       "xvmulsp         54, 50, 36      \n\t"
       "xvmulsp         55, 51, 36      \n\t"

       "xvmulsp         44, 32, 37      \n\t"   // s * x
       "xvmulsp         45, 33, 37      \n\t"
       "xvmulsp         46, 34, 37      \n\t"
       "xvmulsp         47, 35, 37      \n\t"

       "xvmulsp         38, 48, 37     \n\t"   // s * y
       "xvmulsp         39, 49, 37     \n\t"
       "xvmulsp         56, 50, 37     \n\t"
       "xvmulsp         57, 51, 37     \n\t"

       "xvaddsp         40, 40, 38     \n\t"   // c * x + s * y
       "xvaddsp         41, 41, 39     \n\t"   // c * x + s * y
       "xvaddsp         42, 42, 56     \n\t"   // c * x + s * y
       "xvaddsp         43, 43, 57     \n\t"   // c * x + s * y

       "stxvp           40, 0(%3)       \n\t"   // store x
       "stxvp           42, 32(%3)      \n\t"
       "xvsubsp         52, 52, 44      \n\t"   // c * y - s * x
       "xvsubsp         53, 53, 45      \n\t"   // c * y - s * x
       "xvsubsp         54, 54, 46      \n\t"   // c * y - s * x
       "xvsubsp         55, 55, 47      \n\t"   // c * y - s * x

       "stxvp           52, 0(%4)       \n\t"   // store y
       "stxvp           54, 32(%4)      \n\t"

     "#n=%2 x=%0=%3 y=%1=%4 c=%5 s=%6\n"
     :
       "+m" (*x),
       "+m" (*y),
       "+r" (n),	// 2
       "+b" (x),	// 3
       "+b" (y) 	// 4
     :
       "f" (c),		// 5 
       "f" (s)		// 6 
     :
       "cr0",
       "vs32","vs33","vs34","vs35","vs36","vs37","vs38","vs39",
       "vs40","vs41","vs42","vs43","vs44","vs45","vs46","vs47",
       "vs48","vs49","vs50","vs51","vs52","vs53","vs54","vs55",
       "vs56","vs57"
     );
}