195 lines
5.1 KiB
C
195 lines
5.1 KiB
C
/*********************************************************************/
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/* Copyright 2009, 2010 The University of Texas at Austin. */
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/* All rights reserved. */
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/* */
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/* Redistribution and use in source and binary forms, with or */
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/* without modification, are permitted provided that the following */
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/* conditions are met: */
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/* */
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/* 1. Redistributions of source code must retain the above */
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/* copyright notice, this list of conditions and the following */
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/* disclaimer. */
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/* */
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/* 2. Redistributions in binary form must reproduce the above */
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/* copyright notice, this list of conditions and the following */
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/* disclaimer in the documentation and/or other materials */
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/* provided with the distribution. */
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/* */
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/* THIS SOFTWARE IS PROVIDED BY THE UNIVERSITY OF TEXAS AT */
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/* AUSTIN ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, */
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/* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF */
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/* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE */
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/* DISCLAIMED. IN NO EVENT SHALL THE UNIVERSITY OF TEXAS AT */
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/* AUSTIN OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, */
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/* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES */
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/* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE */
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/* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR */
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/* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF */
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/* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT */
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/* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT */
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/* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE */
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/* POSSIBILITY OF SUCH DAMAGE. */
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/* */
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/* The views and conclusions contained in the software and */
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/* documentation are those of the authors and should not be */
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/* interpreted as representing official policies, either expressed */
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/* or implied, of The University of Texas at Austin. */
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/*********************************************************************/
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#include <stdio.h>
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#include "common.h"
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#ifndef MINUS
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#define a2 (a1 + 1)
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#else
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#define a2 (a1 - 1)
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#endif
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int CNAME(BLASLONG n, BLASLONG k1, BLASLONG k2, FLOAT dummy1, FLOAT *a, BLASLONG lda,
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FLOAT *dummy2, BLASLONG dumy3, blasint *ipiv, BLASLONG incx){
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BLASLONG i, j, ip1, ip2;
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blasint *piv;
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FLOAT *a1;
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FLOAT *b1, *b2;
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FLOAT A1, A2, B1, B2;
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a--;
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k1 --;
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#ifndef MINUS
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ipiv += k1
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;
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#else
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ipiv -= (k2 - 1) * incx;
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#endif
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if (n <= 0) return 0;
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j = n;
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if (j > 0) {
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do {
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piv = ipiv;
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#ifndef MINUS
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a1 = a + k1 + 1;
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#else
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a1 = a + k2;
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#endif
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ip1 = *piv;
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piv += incx;
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ip2 = *piv;
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piv += incx;
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b1 = a + ip1;
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b2 = a + ip2;
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i = ((k2 - k1) >> 1);
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if (i > 0) {
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do {
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#ifdef OPTERON
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#ifndef MINUS
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asm volatile("prefetchw 2 * 128(%0)\n" : : "r"(a1));
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asm volatile("prefetchw 2 * 128(%0)\n" : : "r"(b1));
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#else
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asm volatile("prefetchw -2 * 128(%0)\n" : : "r"(a1));
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asm volatile("prefetchw -2 * 128(%0)\n" : : "r"(b1));
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#endif
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#endif
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#ifdef CORE2
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#ifndef MINUS
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asm volatile("prefetcht1 2 * 128(%0)\n" : : "r"(a1));
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asm volatile("prefetcht1 2 * 128(%0)\n" : : "r"(b1));
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asm volatile("prefetcht1 2 * 128(%0)\n" : : "r"(b2));
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#else
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asm volatile("prefetcht1 -2 * 128(%0)\n" : : "r"(a1));
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asm volatile("prefetcht1 -2 * 128(%0)\n" : : "r"(b1));
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asm volatile("prefetcht1 -2 * 128(%0)\n" : : "r"(b2));
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#endif
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#endif
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A1 = *a1;
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A2 = *a2;
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B1 = *b1;
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B2 = *b2;
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ip1 = *piv;
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piv += incx;
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ip2 = *piv;
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piv += incx;
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if (b1 == a1) {
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if (b2 == a1) {
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*a1 = A2;
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*a2 = A1;
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} else
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if (b2 != a2) {
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*a2 = B2;
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*b2 = A2;
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}
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} else
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if (b1 == a2) {
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if (b2 != a1) {
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if (b2 == a2) {
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*a1 = A2;
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*a2 = A1;
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} else {
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*a1 = A2;
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*a2 = B2;
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*b2 = A1;
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}
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}
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} else {
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if (b2 == a1) {
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*a1 = A2;
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*a2 = B1;
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*b1 = A1;
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} else
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if (b2 == a2) {
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*a1 = B1;
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*b1 = A1;
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} else
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if (b2 == b1) {
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*a1 = B1;
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*a2 = A1;
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*b1 = A2;
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} else {
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*a1 = B1;
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*a2 = B2;
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*b1 = A1;
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*b2 = A2;
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}
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}
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b1 = a + ip1;
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b2 = a + ip2;
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#ifndef MINUS
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a1 += 2;
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#else
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a1 -= 2;
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#endif
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i --;
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} while (i > 0);
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}
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i = ((k2 - k1) & 1);
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if (i > 0) {
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A1 = *a1;
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B1 = *b1;
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*a1 = B1;
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*b1 = A1;
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}
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a += lda;
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j --;
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} while (j > 0);
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}
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return 0;
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}
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