312 lines
12 KiB
C
312 lines
12 KiB
C
/***************************************************************************
|
|
Copyright (c) 2017, 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.
|
|
*****************************************************************************/
|
|
|
|
#include "common.h"
|
|
#include <math.h>
|
|
|
|
#if defined(DOUBLE)
|
|
#define ABS fabs
|
|
#else
|
|
#define ABS fabsf
|
|
#endif
|
|
#define CABS1(x,i) (ABS(x[i]) + ABS(x[i + 1]))
|
|
|
|
static BLASLONG icamax_kernel_32(BLASLONG n, FLOAT *x, FLOAT *amax)
|
|
{
|
|
BLASLONG iamax;
|
|
|
|
__asm__ volatile (
|
|
"vlef %%v0,0(%3),0 \n\t"
|
|
"vlef %%v1,4(%3),0 \n\t"
|
|
"vlef %%v0,8(%3),1 \n\t"
|
|
"vlef %%v1,12(%3),1 \n\t"
|
|
"vlef %%v0,16(%3),2 \n\t"
|
|
"vlef %%v1,20(%3),2 \n\t"
|
|
"vlef %%v0,24(%3),3 \n\t"
|
|
"vlef %%v1,28(%3),3 \n\t"
|
|
"vflpsb %%v0,%%v0 \n\t"
|
|
"vflpsb %%v1,%%v1 \n\t"
|
|
"vfasb %%v0,%%v0,%%v1 \n\t"
|
|
"vleig %%v1,0,0 \n\t"
|
|
"vleig %%v1,2,1 \n\t"
|
|
"vleig %%v2,1,0 \n\t"
|
|
"vleig %%v2,3,1 \n\t"
|
|
"vrepig %%v3,16 \n\t"
|
|
"vzero %%v4 \n\t"
|
|
"vleib %%v9,0,0 \n\t"
|
|
"vleib %%v9,1,1 \n\t"
|
|
"vleib %%v9,2,2 \n\t"
|
|
"vleib %%v9,3,3 \n\t"
|
|
"vleib %%v9,8,4 \n\t"
|
|
"vleib %%v9,9,5 \n\t"
|
|
"vleib %%v9,10,6 \n\t"
|
|
"vleib %%v9,11,7 \n\t"
|
|
"vleib %%v9,16,8 \n\t"
|
|
"vleib %%v9,17,9 \n\t"
|
|
"vleib %%v9,18,10 \n\t"
|
|
"vleib %%v9,19,11 \n\t"
|
|
"vleib %%v9,24,12 \n\t"
|
|
"vleib %%v9,25,13 \n\t"
|
|
"vleib %%v9,26,14 \n\t"
|
|
"vleib %%v9,27,15 \n\t"
|
|
"vleif %%v24,0,0 \n\t"
|
|
"vleif %%v24,1,1 \n\t"
|
|
"vleif %%v24,2,2 \n\t"
|
|
"vleif %%v24,3,3 \n\t"
|
|
"vleif %%v25,4,0 \n\t"
|
|
"vleif %%v25,5,1 \n\t"
|
|
"vleif %%v25,6,2 \n\t"
|
|
"vleif %%v25,7,3 \n\t"
|
|
"vleif %%v26,8,0 \n\t"
|
|
"vleif %%v26,9,1 \n\t"
|
|
"vleif %%v26,10,2 \n\t"
|
|
"vleif %%v26,11,3 \n\t"
|
|
"vleif %%v27,12,0 \n\t"
|
|
"vleif %%v27,13,1 \n\t"
|
|
"vleif %%v27,14,2 \n\t"
|
|
"vleif %%v27,15,3 \n\t"
|
|
"srlg %%r0,%2,5 \n\t"
|
|
"xgr %%r1,%%r1 \n\t"
|
|
"0: \n\t"
|
|
"pfd 1, 1024(%%r1,%3) \n\t"
|
|
|
|
"vl %%v16,0(%%r1,%3) \n\t"
|
|
"vl %%v28,16(%%r1,%3) \n\t"
|
|
"vpkg %%v17,%%v16,%%v28 \n\t"
|
|
"vperm %%v16,%%v16,%%v28,%%v9 \n\t"
|
|
|
|
"vl %%v18,32(%%r1,%3) \n\t"
|
|
"vl %%v29,48(%%r1,%3) \n\t"
|
|
"vpkg %%v19,%%v18,%%v29 \n\t"
|
|
"vperm %%v18,%%v18,%%v29,%%v9 \n\t"
|
|
|
|
"vl %%v20,64(%%r1,%3) \n\t"
|
|
"vl %%v30,80(%%r1,%3) \n\t"
|
|
"vpkg %%v21,%%v20,%%v30 \n\t"
|
|
"vperm %%v20,%%v20,%%v30,%%v9 \n\t"
|
|
|
|
"vl %%v22,96(%%r1,%3) \n\t"
|
|
"vl %%v31,112(%%r1,%3) \n\t"
|
|
"vpkg %%v23,%%v22,%%v31 \n\t"
|
|
"vperm %%v22,%%v22,%%v31,%%v9 \n\t"
|
|
|
|
"vflpsb %%v16, %%v16 \n\t"
|
|
"vflpsb %%v17, %%v17 \n\t"
|
|
"vflpsb %%v18, %%v18 \n\t"
|
|
"vflpsb %%v19, %%v19 \n\t"
|
|
"vflpsb %%v20, %%v20 \n\t"
|
|
"vflpsb %%v21, %%v21 \n\t"
|
|
"vflpsb %%v22, %%v22 \n\t"
|
|
"vflpsb %%v23, %%v23 \n\t"
|
|
"vfasb %%v16,%%v16,%%v17 \n\t"
|
|
"vfasb %%v17,%%v18,%%v19 \n\t"
|
|
"vfasb %%v18,%%v20,%%v21 \n\t"
|
|
"vfasb %%v19,%%v22,%%v23 \n\t"
|
|
|
|
"vfchesb %%v5,%%v16,%%v17 \n\t"
|
|
"vfchesb %%v6,%%v18,%%v19 \n\t"
|
|
"vsel %%v16,%%v16,%%v17,%%v5 \n\t"
|
|
"vsel %%v5,%%v24,%%v25,%%v5 \n\t"
|
|
"vsel %%v17,%%v18,%%v19,%%v6 \n\t"
|
|
"vsel %%v6,%%v26,%%v27,%%v6 \n\t"
|
|
|
|
"vfchesb %%v18,%%v16,%%v17 \n\t"
|
|
"vsel %%v16,%%v16,%%v17,%%v18 \n\t"
|
|
"vsel %%v5,%%v5,%%v6,%%v18 \n\t"
|
|
"vsegf %%v6,%%v5 \n\t"
|
|
"vesrlg %%v5,%%v5,32 \n\t"
|
|
"vag %%v5,%%v5,%%v4 \n\t"
|
|
"vag %%v6,%%v6,%%v4 \n\t"
|
|
|
|
"vfchesb %%v7,%%v0,%%v16 \n\t"
|
|
"vsel %%v0,%%v0,%%v16,%%v7 \n\t"
|
|
"vsegf %%v8,%%v7 \n\t"
|
|
"vesrlg %%v7,%%v7,32 \n\t"
|
|
"vsegf %%v7,%%v7 \n\t"
|
|
"vsel %%v1,%%v1,%%v5,%%v7 \n\t"
|
|
"vsel %%v2,%%v2,%%v6,%%v8 \n\t"
|
|
"vag %%v4,%%v4,%%v3 \n\t"
|
|
|
|
"vl %%v16,128(%%r1,%3) \n\t"
|
|
"vl %%v28,144(%%r1,%3) \n\t"
|
|
"vpkg %%v17,%%v16,%%v28 \n\t"
|
|
"vperm %%v16,%%v16,%%v28,%%v9 \n\t"
|
|
|
|
"vl %%v18,160(%%r1,%3) \n\t"
|
|
"vl %%v29,176(%%r1,%3) \n\t"
|
|
"vpkg %%v19,%%v18,%%v29 \n\t"
|
|
"vperm %%v18,%%v18,%%v29,%%v9 \n\t"
|
|
|
|
"vl %%v20,192(%%r1,%3) \n\t"
|
|
"vl %%v30,208(%%r1,%3) \n\t"
|
|
"vpkg %%v21,%%v20,%%v30 \n\t"
|
|
"vperm %%v20,%%v20,%%v30,%%v9 \n\t"
|
|
|
|
"vl %%v22,224(%%r1,%3) \n\t"
|
|
"vl %%v31,240(%%r1,%3) \n\t"
|
|
"vpkg %%v23,%%v22,%%v31 \n\t"
|
|
"vperm %%v22,%%v22,%%v31,%%v9 \n\t"
|
|
|
|
"vflpsb %%v16, %%v16 \n\t"
|
|
"vflpsb %%v17, %%v17 \n\t"
|
|
"vflpsb %%v18, %%v18 \n\t"
|
|
"vflpsb %%v19, %%v19 \n\t"
|
|
"vflpsb %%v20, %%v20 \n\t"
|
|
"vflpsb %%v21, %%v21 \n\t"
|
|
"vflpsb %%v22, %%v22 \n\t"
|
|
"vflpsb %%v23, %%v23 \n\t"
|
|
"vfasb %%v16,%%v16,%%v17 \n\t"
|
|
"vfasb %%v17,%%v18,%%v19 \n\t"
|
|
"vfasb %%v18,%%v20,%%v21 \n\t"
|
|
"vfasb %%v19,%%v22,%%v23 \n\t"
|
|
|
|
"vfchesb %%v5,%%v16,%%v17 \n\t"
|
|
"vfchesb %%v6,%%v18,%%v19 \n\t"
|
|
"vsel %%v16,%%v16,%%v17,%%v5 \n\t"
|
|
"vsel %%v5,%%v24,%%v25,%%v5 \n\t"
|
|
"vsel %%v17,%%v18,%%v19,%%v6 \n\t"
|
|
"vsel %%v6,%%v26,%%v27,%%v6 \n\t"
|
|
|
|
"vfchesb %%v18,%%v16,%%v17 \n\t"
|
|
"vsel %%v16,%%v16,%%v17,%%v18 \n\t"
|
|
"vsel %%v5,%%v5,%%v6,%%v18 \n\t"
|
|
"vsegf %%v6,%%v5 \n\t"
|
|
"vesrlg %%v5,%%v5,32 \n\t"
|
|
"vag %%v5,%%v5,%%v4 \n\t"
|
|
"vag %%v6,%%v6,%%v4 \n\t"
|
|
|
|
"vfchesb %%v7,%%v0,%%v16 \n\t"
|
|
"vsel %%v0,%%v0,%%v16,%%v7 \n\t"
|
|
"vsegf %%v8,%%v7 \n\t"
|
|
"vesrlg %%v7,%%v7,32 \n\t"
|
|
"vsegf %%v7,%%v7 \n\t"
|
|
"vsel %%v1,%%v1,%%v5,%%v7 \n\t"
|
|
"vsel %%v2,%%v2,%%v6,%%v8 \n\t"
|
|
"vag %%v4,%%v4,%%v3 \n\t"
|
|
|
|
"agfi %%r1, 256 \n\t"
|
|
"brctg %%r0, 0b \n\t"
|
|
|
|
"veslg %%v3,%%v0,32 \n\t"
|
|
"vfchsb %%v4,%%v0,%%v3 \n\t"
|
|
"vchlg %%v5,%%v2,%%v1 \n\t"
|
|
"vfcesb %%v6,%%v0,%%v3 \n\t"
|
|
"vn %%v5,%%v5,%%v6 \n\t"
|
|
"vo %%v4,%%v4,%%v5 \n\t"
|
|
"vsel %%v0,%%v0,%%v3,%%v4 \n\t"
|
|
"vesrlg %%v4,%%v4,32 \n\t"
|
|
"vsegf %%v4,%%v4 \n\t"
|
|
"vsel %%v1,%%v1,%%v2,%%v4 \n\t"
|
|
|
|
"vrepf %%v2,%%v0,2 \n\t"
|
|
"vrepg %%v3,%%v1,1 \n\t"
|
|
"wfcsb %%v2,%%v0 \n\t"
|
|
"jne 1f \n\t"
|
|
"vstef %%v0,%1,0 \n\t"
|
|
"vmnlg %%v0,%%v1,%%v3 \n\t"
|
|
"vlgvg %0,%%v0,0 \n\t"
|
|
"j 2f \n\t"
|
|
"1: \n\t"
|
|
"wfchsb %%v4,%%v2,%%v0 \n\t"
|
|
"vesrlg %%v4,%%v4,32 \n\t"
|
|
"vsegf %%v4,%%v4 \n\t"
|
|
"vsel %%v1,%%v3,%%v1,%%v4 \n\t"
|
|
"vsel %%v0,%%v2,%%v0,%%v4 \n\t"
|
|
"ste %%f0,%1 \n\t"
|
|
"vlgvg %0,%%v1,0 \n\t"
|
|
"2: \n\t"
|
|
"nop "
|
|
:"=r"(iamax),"=m"(*amax)
|
|
:"r"(n),"ZR"((const FLOAT (*)[n * 2])x)
|
|
:"memory","cc","r0","r1","v0","v1","v2","v3","v4","v5","v6","v7","v8","v9","v16","v17","v18","v19","v20","v21","v22","v23","v24","v25","v26","v27","v28","v29","v30","v31"
|
|
);
|
|
|
|
return iamax;
|
|
}
|
|
|
|
BLASLONG CNAME(BLASLONG n, FLOAT *x, BLASLONG inc_x)
|
|
{
|
|
BLASLONG i = 0;
|
|
BLASLONG ix = 0;
|
|
FLOAT maxf = 0;
|
|
BLASLONG max = 0;
|
|
BLASLONG inc_x2;
|
|
|
|
if (n <= 0 || inc_x <= 0) return(max);
|
|
|
|
if (inc_x == 1) {
|
|
|
|
BLASLONG n1 = n & -32;
|
|
if (n1 > 0) {
|
|
|
|
max = icamax_kernel_32(n1, x, &maxf);
|
|
ix = n1 * 2;
|
|
i = n1;
|
|
}
|
|
else
|
|
{
|
|
maxf = CABS1(x,0);
|
|
ix += 2;
|
|
i++;
|
|
}
|
|
|
|
while(i < n)
|
|
{
|
|
if( CABS1(x,ix) > maxf )
|
|
{
|
|
max = i;
|
|
maxf = CABS1(x,ix);
|
|
}
|
|
ix += 2;
|
|
i++;
|
|
}
|
|
return (max + 1);
|
|
|
|
} else {
|
|
|
|
max = 0;
|
|
maxf = CABS1(x,0);
|
|
inc_x2 = 2 * inc_x;
|
|
ix += inc_x2;
|
|
i++;
|
|
|
|
while(i < n)
|
|
{
|
|
if( CABS1(x,ix) > maxf )
|
|
{
|
|
max = i;
|
|
maxf = CABS1(x,ix);
|
|
}
|
|
ix += inc_x2;
|
|
i++;
|
|
}
|
|
return (max + 1);
|
|
}
|
|
}
|
|
|
|
|