327 lines
12 KiB
C
327 lines
12 KiB
C
/***************************************************************************
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Copyright (c) 2017, 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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#include "common.h"
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#include <math.h>
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#if defined(DOUBLE)
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#define ABS fabs
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#else
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#define ABS fabsf
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#endif
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#define CABS1(x,i) (ABS(x[i]) + ABS(x[i + 1]))
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static BLASLONG icamax_kernel_32(BLASLONG n, FLOAT *x, FLOAT *amax)
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{
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BLASLONG iamax;
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__asm__ volatile (
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"vlef %%v0,0(%3),0 \n\t"
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"vlef %%v1,4(%3),0 \n\t"
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"vlef %%v0,8(%3),1 \n\t"
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"vlef %%v1,12(%3),1 \n\t"
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"vlef %%v0,16(%3),2 \n\t"
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"vlef %%v1,20(%3),2 \n\t"
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"vlef %%v0,24(%3),3 \n\t"
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"vlef %%v1,28(%3),3 \n\t"
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"vflpsb %%v0,%%v0 \n\t"
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"vflpsb %%v1,%%v1 \n\t"
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"vfasb %%v0,%%v0,%%v1 \n\t"
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"vleig %%v1,0,0 \n\t"
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"vleig %%v1,2,1 \n\t"
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"vleig %%v2,1,0 \n\t"
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"vleig %%v2,3,1 \n\t"
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"vrepig %%v3,16 \n\t"
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"vzero %%v4 \n\t"
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"vleif %%v24,0,0 \n\t"
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"vleif %%v24,1,1 \n\t"
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"vleif %%v24,2,2 \n\t"
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"vleif %%v24,3,3 \n\t"
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"vleif %%v25,4,0 \n\t"
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"vleif %%v25,5,1 \n\t"
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"vleif %%v25,6,2 \n\t"
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"vleif %%v25,7,3 \n\t"
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"vleif %%v26,8,0 \n\t"
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"vleif %%v26,9,1 \n\t"
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"vleif %%v26,10,2 \n\t"
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"vleif %%v26,11,3 \n\t"
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"vleif %%v27,12,0 \n\t"
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"vleif %%v27,13,1 \n\t"
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"vleif %%v27,14,2 \n\t"
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"vleif %%v27,15,3 \n\t"
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"srlg %%r0,%2,5 \n\t"
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"xgr %%r1,%%r1 \n\t"
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"0: \n\t"
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"pfd 1, 1024(%%r1,%3) \n\t"
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"vlef %%v16,0(%%r1,%3),0 \n\t"
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"vlef %%v17,4(%%r1,%3),0 \n\t"
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"vlef %%v16,8(%%r1,%3),1 \n\t"
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"vlef %%v17,12(%%r1,%3),1 \n\t"
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"vlef %%v16,16(%%r1,%3),2 \n\t"
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"vlef %%v17,20(%%r1,%3),2 \n\t"
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"vlef %%v16,24(%%r1,%3),3 \n\t"
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"vlef %%v17,28(%%r1,%3),3 \n\t"
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"vlef %%v18,32(%%r1,%3),0 \n\t"
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"vlef %%v19,36(%%r1,%3),0 \n\t"
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"vlef %%v18,40(%%r1,%3),1 \n\t"
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"vlef %%v19,44(%%r1,%3),1 \n\t"
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"vlef %%v18,48(%%r1,%3),2 \n\t"
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"vlef %%v19,52(%%r1,%3),2 \n\t"
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"vlef %%v18,56(%%r1,%3),3 \n\t"
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"vlef %%v19,30(%%r1,%3),3 \n\t"
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"vlef %%v20,64(%%r1,%3),0 \n\t"
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"vlef %%v21,68(%%r1,%3),0 \n\t"
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"vlef %%v20,72(%%r1,%3),1 \n\t"
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"vlef %%v21,76(%%r1,%3),1 \n\t"
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"vlef %%v20,80(%%r1,%3),2 \n\t"
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"vlef %%v21,84(%%r1,%3),2 \n\t"
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"vlef %%v20,88(%%r1,%3),3 \n\t"
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"vlef %%v21,92(%%r1,%3),3 \n\t"
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"vlef %%v22,96(%%r1,%3),0 \n\t"
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"vlef %%v23,100(%%r1,%3),0 \n\t"
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"vlef %%v22,104(%%r1,%3),1 \n\t"
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"vlef %%v23,108(%%r1,%3),1 \n\t"
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"vlef %%v22,112(%%r1,%3),2 \n\t"
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"vlef %%v23,116(%%r1,%3),2 \n\t"
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"vlef %%v22,120(%%r1,%3),3 \n\t"
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"vlef %%v23,124(%%r1,%3),3 \n\t"
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"vflpsb %%v16, %%v16 \n\t"
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"vflpsb %%v17, %%v17 \n\t"
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"vflpsb %%v18, %%v18 \n\t"
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"vflpsb %%v19, %%v19 \n\t"
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"vflpsb %%v20, %%v20 \n\t"
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"vflpsb %%v21, %%v21 \n\t"
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"vflpsb %%v22, %%v22 \n\t"
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"vflpsb %%v23, %%v23 \n\t"
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"vfasb %%v16,%%v16,%%v17 \n\t"
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"vfasb %%v17,%%v18,%%v19 \n\t"
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"vfasb %%v18,%%v20,%%v21 \n\t"
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"vfasb %%v19,%%v22,%%v23 \n\t"
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"vfchesb %%v5,%%v16,%%v17 \n\t"
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"vfchesb %%v6,%%v18,%%v19 \n\t"
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"vsel %%v16,%%v16,%%v17,%%v5 \n\t"
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"vsel %%v5,%%v24,%%v25,%%v5 \n\t"
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"vsel %%v17,%%v18,%%v19,%%v6 \n\t"
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"vsel %%v6,%%v26,%%v27,%%v6 \n\t"
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"vfchesb %%v18,%%v16,%%v17 \n\t"
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"vsel %%v16,%%v16,%%v17,%%v18 \n\t"
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"vsel %%v5,%%v5,%%v6,%%v18 \n\t"
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"vsegf %%v6,%%v5 \n\t"
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"vesrlg %%v5,%%v5,32 \n\t"
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"vag %%v5,%%v5,%%v4 \n\t"
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"vag %%v6,%%v6,%%v4 \n\t"
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"vfchesb %%v7,%%v0,%%v16 \n\t"
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"vsel %%v0,%%v0,%%v16,%%v7 \n\t"
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"vsegf %%v8,%%v7 \n\t"
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"vesrlg %%v7,%%v7,32 \n\t"
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"vsegf %%v7,%%v7 \n\t"
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"vsel %%v1,%%v1,%%v5,%%v7 \n\t"
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"vsel %%v2,%%v2,%%v6,%%v8 \n\t"
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"vag %%v4,%%v4,%%v3 \n\t"
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"vlef %%v16,128(%%r1,%3),0 \n\t"
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"vlef %%v17,132(%%r1,%3),0 \n\t"
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"vlef %%v16,136(%%r1,%3),1 \n\t"
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"vlef %%v17,140(%%r1,%3),1 \n\t"
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"vlef %%v16,144(%%r1,%3),2 \n\t"
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"vlef %%v17,148(%%r1,%3),2 \n\t"
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"vlef %%v16,152(%%r1,%3),3 \n\t"
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"vlef %%v17,156(%%r1,%3),3 \n\t"
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"vlef %%v18,160(%%r1,%3),0 \n\t"
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"vlef %%v19,164(%%r1,%3),0 \n\t"
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"vlef %%v18,168(%%r1,%3),1 \n\t"
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"vlef %%v19,172(%%r1,%3),1 \n\t"
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"vlef %%v18,176(%%r1,%3),2 \n\t"
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"vlef %%v19,180(%%r1,%3),2 \n\t"
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"vlef %%v18,184(%%r1,%3),3 \n\t"
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"vlef %%v19,188(%%r1,%3),3 \n\t"
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"vlef %%v20,192(%%r1,%3),0 \n\t"
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"vlef %%v21,196(%%r1,%3),0 \n\t"
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"vlef %%v20,200(%%r1,%3),1 \n\t"
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"vlef %%v21,204(%%r1,%3),1 \n\t"
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"vlef %%v20,208(%%r1,%3),2 \n\t"
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"vlef %%v21,212(%%r1,%3),2 \n\t"
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"vlef %%v20,216(%%r1,%3),3 \n\t"
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"vlef %%v21,220(%%r1,%3),3 \n\t"
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"vlef %%v22,224(%%r1,%3),0 \n\t"
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"vlef %%v23,228(%%r1,%3),0 \n\t"
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"vlef %%v22,232(%%r1,%3),1 \n\t"
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"vlef %%v23,236(%%r1,%3),1 \n\t"
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"vlef %%v22,240(%%r1,%3),2 \n\t"
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"vlef %%v23,244(%%r1,%3),2 \n\t"
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"vlef %%v22,248(%%r1,%3),3 \n\t"
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"vlef %%v23,252(%%r1,%3),3 \n\t"
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"vflpsb %%v16, %%v16 \n\t"
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"vflpsb %%v17, %%v17 \n\t"
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"vflpsb %%v18, %%v18 \n\t"
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"vflpsb %%v19, %%v19 \n\t"
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"vflpsb %%v20, %%v20 \n\t"
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"vflpsb %%v21, %%v21 \n\t"
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"vflpsb %%v22, %%v22 \n\t"
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"vflpsb %%v23, %%v23 \n\t"
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"vfasb %%v16,%%v16,%%v17 \n\t"
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"vfasb %%v17,%%v18,%%v19 \n\t"
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"vfasb %%v18,%%v20,%%v21 \n\t"
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"vfasb %%v19,%%v22,%%v23 \n\t"
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"vfchesb %%v5,%%v16,%%v17 \n\t"
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"vfchesb %%v6,%%v18,%%v19 \n\t"
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"vsel %%v16,%%v16,%%v17,%%v5 \n\t"
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"vsel %%v5,%%v24,%%v25,%%v5 \n\t"
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"vsel %%v17,%%v18,%%v19,%%v6 \n\t"
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"vsel %%v6,%%v26,%%v27,%%v6 \n\t"
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"vfchesb %%v18,%%v16,%%v17 \n\t"
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"vsel %%v16,%%v16,%%v17,%%v18 \n\t"
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"vsel %%v5,%%v5,%%v6,%%v18 \n\t"
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"vsegf %%v6,%%v5 \n\t"
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"vesrlg %%v5,%%v5,32 \n\t"
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"vag %%v5,%%v5,%%v4 \n\t"
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"vag %%v6,%%v6,%%v4 \n\t"
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"vfchesb %%v7,%%v0,%%v16 \n\t"
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"vsel %%v0,%%v0,%%v16,%%v7 \n\t"
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"vsegf %%v8,%%v7 \n\t"
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"vesrlg %%v7,%%v7,32 \n\t"
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"vsegf %%v7,%%v7 \n\t"
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"vsel %%v1,%%v1,%%v5,%%v7 \n\t"
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"vsel %%v2,%%v2,%%v6,%%v8 \n\t"
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"vag %%v4,%%v4,%%v3 \n\t"
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"agfi %%r1, 256 \n\t"
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"brctg %%r0, 0b \n\t"
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"veslg %%v3,%%v0,32 \n\t"
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"vfchsb %%v4,%%v0,%%v3 \n\t"
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"vchlg %%v5,%%v2,%%v1 \n\t"
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"vfcesb %%v6,%%v0,%%v3 \n\t"
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"vn %%v5,%%v5,%%v6 \n\t"
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"vo %%v4,%%v4,%%v5 \n\t"
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"vsel %%v0,%%v0,%%v3,%%v4 \n\t"
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"vesrlg %%v4,%%v4,32 \n\t"
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"vsegf %%v4,%%v4 \n\t"
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"vsel %%v1,%%v1,%%v2,%%v4 \n\t"
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"vrepf %%v2,%%v0,2 \n\t"
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"vrepg %%v3,%%v1,1 \n\t"
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"wfcsb %%v2,%%v0 \n\t"
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"jne 1f \n\t"
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"vstef %%v0,%1,0 \n\t"
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"vmnlg %%v0,%%v1,%%v3 \n\t"
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"vlgvg %0,%%v0,0 \n\t"
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"j 2f \n\t"
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"1: \n\t"
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"wfchsb %%v4,%%v2,%%v0 \n\t"
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"vsel %%v1,%%v3,%%v1,%%v4 \n\t"
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"vsel %%v0,%%v2,%%v0,%%v4 \n\t"
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"ste %%f0,%1 \n\t"
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"vlgvg %0,%%v1,0 \n\t"
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"2: \n\t"
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"nop "
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:"=r"(iamax),"=m"(*amax)
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:"r"(n),"ZR"((const FLOAT (*)[n * 2])x)
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:"memory","cc","r0","r1","v0","v1","v2","v3","v4","v5","v6","v7","v8","v16","v17","v18","v19","v20","v21","v22","v23","v24","v25","v26","v27"
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);
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return iamax;
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}
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BLASLONG CNAME(BLASLONG n, FLOAT *x, BLASLONG inc_x)
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{
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BLASLONG i = 0;
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BLASLONG ix = 0;
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FLOAT maxf = 0;
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BLASLONG max = 0;
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BLASLONG inc_x2;
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if (n <= 0 || inc_x <= 0) return(max);
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if (inc_x == 1) {
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BLASLONG n1 = n & -32;
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if (n1 > 0) {
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max = icamax_kernel_32(n1, x, &maxf);
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i = n1;
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}
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else
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{
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max = 0;
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maxf = CABS1(x,0);
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ix += 2;
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i++;
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}
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while(i < n)
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{
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if( CABS1(x,ix) > maxf )
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{
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max = i;
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maxf = CABS1(x,ix);
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}
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ix += 2;
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i++;
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}
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return (max + 1);
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} else {
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max = 0;
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maxf = CABS1(x,0);
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inc_x2 = 2 * inc_x;
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ix += inc_x2;
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i++;
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while(i < n)
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{
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if( CABS1(x,ix) > maxf )
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{
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max = i;
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maxf = CABS1(x,ix);
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}
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ix += inc_x2;
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i++;
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}
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return (max + 1);
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}
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}
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