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OpenBLAS/kernel/power/zrot.c

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/***************************************************************************
Copyright (c) 2018, 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.
*****************************************************************************/
#if !defined(__VEC__) || !defined(__ALTIVEC__)
#include "../arm/zrot.c"
#else
#include "common.h"
static void zrot_kernel_4(BLASLONG n, FLOAT *x, FLOAT *y, FLOAT cosA, FLOAT sinA)
{
__vector double t0;
__vector double t1;
__vector double t2;
__vector double t3;
__vector double t4;
__vector double t5;
__vector double t6;
__vector double t7;
__asm__
(
XXSPLTD_S(36,%x[cos],0) // load c to both dwords
XXSPLTD_S(37,%x[sin],0) // load s to both dwords
"lxvd2x 32, 0, %[x_ptr] \n\t" // load x
"lxvd2x 33, %[i16], %[x_ptr] \n\t"
"lxvd2x 34, %[i32], %[x_ptr] \n\t"
"lxvd2x 35, %[i48], %[x_ptr] \n\t"
"lxvd2x 48, 0, %[y_ptr] \n\t" // load y
"lxvd2x 49, %[i16], %[y_ptr] \n\t"
"lxvd2x 50, %[i32], %[y_ptr] \n\t"
"lxvd2x 51, %[i48], %[y_ptr] \n\t"
"addi %[x_ptr], %[x_ptr], 64 \n\t"
"addi %[y_ptr], %[y_ptr], 64 \n\t"
"addic. %[temp_n], %[temp_n], -4 \n\t"
"ble two%= \n\t"
".align 5 \n"
"one%=: \n\t"
"xvmuldp 40, 32, 36 \n\t" // c * x
"xvmuldp 41, 33, 36 \n\t"
"xvmuldp 42, 34, 36 \n\t"
"xvmuldp 43, 35, 36 \n\t"
"xvmuldp %x[x0], 48, 36 \n\t" // c * y
"xvmuldp %x[x1], 49, 36 \n\t"
"xvmuldp %x[x2], 50, 36 \n\t"
"xvmuldp %x[x3], 51, 36 \n\t"
"xvmuldp 44, 32, 37 \n\t" // s * x
"xvmuldp 45, 33, 37 \n\t"
"lxvd2x 32, 0, %[x_ptr] \n\t" // load x
"lxvd2x 33, %[i16],%[x_ptr] \n\t"
"xvmuldp 46, 34, 37 \n\t"
"xvmuldp 47, 35, 37 \n\t"
"lxvd2x 34, %[i32], %[x_ptr] \n\t"
"lxvd2x 35, %[i48], %[x_ptr] \n\t"
"xvmuldp %x[x4], 48, 37 \n\t" // s * y
"xvmuldp %x[x5], 49, 37 \n\t"
"lxvd2x 48, 0, %[y_ptr] \n\t" // load y
"lxvd2x 49, %[i16], %[y_ptr] \n\t"
"xvmuldp %x[x6], 50, 37 \n\t"
"xvmuldp %x[x7], 51, 37 \n\t"
"lxvd2x 50, %[i32], %[y_ptr] \n\t"
"lxvd2x 51, %[i48], %[y_ptr] \n\t"
"xvadddp 40, 40, %x[x4] \n\t" // c * x + s * y
"xvadddp 41, 41, %x[x5] \n\t" // c * x + s * y
"addi %[x_ptr], %[x_ptr], -64 \n\t"
"addi %[y_ptr], %[y_ptr], -64 \n\t"
"xvadddp 42, 42, %x[x6] \n\t" // c * x + s * y
"xvadddp 43, 43, %x[x7] \n\t" // c * x + s * y
"xvsubdp %x[x0], %x[x0], 44 \n\t" // c * y - s * x
"xvsubdp %x[x1], %x[x1], 45 \n\t" // c * y - s * x
"xvsubdp %x[x2], %x[x2], 46 \n\t" // c * y - s * x
"xvsubdp %x[x3], %x[x3], 47 \n\t" // c * y - s * x
"stxvd2x 40, 0, %[x_ptr] \n\t" // store x
"stxvd2x 41, %[i16], %[x_ptr] \n\t"
"stxvd2x 42, %[i32], %[x_ptr] \n\t"
"stxvd2x 43, %[i48], %[x_ptr] \n\t"
"stxvd2x %x[x0], 0, %[y_ptr] \n\t" // store y
"stxvd2x %x[x1], %[i16], %[y_ptr] \n\t"
"stxvd2x %x[x2], %[i32], %[y_ptr] \n\t"
"stxvd2x %x[x3], %[i48], %[y_ptr] \n\t"
"addi %[x_ptr], %[x_ptr], 128 \n\t"
"addi %[y_ptr], %[y_ptr], 128 \n\t"
"addic. %[temp_n], %[temp_n], -4 \n\t"
"bgt+ one%= \n"
"two%=: \n\t"
"xvmuldp 40, 32, 36 \n\t" // c * x
"xvmuldp 41, 33, 36 \n\t"
"xvmuldp 42, 34, 36 \n\t"
"xvmuldp 43, 35, 36 \n\t"
"xvmuldp %x[x0], 48, 36 \n\t" // c * y
"xvmuldp %x[x1], 49, 36 \n\t"
"xvmuldp %x[x2], 50, 36 \n\t"
"xvmuldp %x[x3], 51, 36 \n\t"
"xvmuldp 44, 32, 37 \n\t" // s * x
"xvmuldp 45, 33, 37 \n\t"
"xvmuldp 46, 34, 37 \n\t"
"xvmuldp 47, 35, 37 \n\t"
"xvmuldp %x[x4], 48, 37 \n\t" // s * y
"xvmuldp %x[x5], 49, 37 \n\t"
"xvmuldp %x[x6], 50, 37 \n\t"
"xvmuldp %x[x7], 51, 37 \n\t"
"addi %[x_ptr], %[x_ptr], -64 \n\t"
"addi %[y_ptr], %[y_ptr], -64 \n\t"
"xvadddp 40, 40, %x[x4] \n\t" // c * x + s * y
"xvadddp 41, 41, %x[x5] \n\t" // c * x + s * y
"xvadddp 42, 42, %x[x6] \n\t" // c * x + s * y
"xvadddp 43, 43, %x[x7] \n\t" // c * x + s * y
"xvsubdp %x[x0], %x[x0], 44 \n\t" // c * y - s * x
"xvsubdp %x[x1], %x[x1], 45 \n\t" // c * y - s * x
"xvsubdp %x[x2], %x[x2], 46 \n\t" // c * y - s * x
"xvsubdp %x[x3], %x[x3], 47 \n\t" // c * y - s * x
"stxvd2x 40, 0, %[x_ptr] \n\t" // store x
"stxvd2x 41, %[i16], %[x_ptr] \n\t"
"stxvd2x 42, %[i32], %[x_ptr] \n\t"
"stxvd2x 43, %[i48], %[x_ptr] \n\t"
"stxvd2x %x[x0], 0, %[y_ptr] \n\t" // store y
"stxvd2x %x[x1], %[i16], %[y_ptr] \n\t"
"stxvd2x %x[x2], %[i32], %[y_ptr] \n\t"
"stxvd2x %x[x3], %[i48], %[y_ptr] \n\t"
:
[mem_x] "+m" (*(double (*)[2*n])x),
[mem_y] "+m" (*(double (*)[2*n])y),
[temp_n] "+&r" (n),
[x_ptr] "+&b"(x), [y_ptr] "+&b"(y),
[x0] "=wa" (t0),
[x1] "=wa" (t1),
[x2] "=wa" (t2),
[x3] "=wa" (t3),
[x4] "=wa" (t4),
[x5] "=wa" (t5),
[x6] "=wa" (t6),
[x7] "=wa" (t7)
:
[cos] "d" (cosA),
[sin] "d" (sinA),
[i16] "b" (16),
[i32] "b" (32),
[i48] "b" (48)
:
"cr0",
"vs32","vs33","vs34","vs35","vs36","vs37",
"vs40","vs41","vs42","vs43","vs44","vs45","vs46","vs47",
"vs48","vs49","vs50","vs51"
);
return;
}
int CNAME(BLASLONG n, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y, FLOAT c, FLOAT s)
{
BLASLONG i=0;
BLASLONG ix=0,iy=0;
FLOAT temp[2];
BLASLONG inc_x2;
BLASLONG inc_y2;
if ( n <= 0 ) return(0);
if ( (inc_x == 1) && (inc_y == 1) )
{
BLASLONG n1 = n & -4;
if ( n1 > 0 )
{
zrot_kernel_4(n1, x, y, c, s);
i=n1;
ix=2*n1;
}
while(i < n)
{
temp[0] = c*x[ix] + s*y[ix] ;
temp[1] = c*x[ix+1] + s*y[ix+1] ;
y[ix] = c*y[ix] - s*x[ix] ;
y[ix+1] = c*y[ix+1] - s*x[ix+1] ;
x[ix] = temp[0] ;
x[ix+1] = temp[1] ;
ix += 2 ;
i++ ;
}
}
else
{
inc_x2 = 2 * inc_x ;
inc_y2 = 2 * inc_y ;
while(i < n)
{
temp[0] = c*x[ix] + s*y[iy] ;
temp[1] = c*x[ix+1] + s*y[iy+1] ;
y[iy] = c*y[iy] - s*x[ix] ;
y[iy+1] = c*y[iy+1] - s*x[ix+1] ;
x[ix] = temp[0] ;
x[ix+1] = temp[1] ;
ix += inc_x2 ;
iy += inc_y2 ;
i++ ;
}
}
return(0);
}
#endif
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