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annotate gcc/testsuite/gcc.dg/tree-ssa/loop-interchange-13.c @ 131:84e7813d76e9

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gcc-8.2
author mir3636
date Thu, 25 Oct 2018 07:37:49 +0900
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Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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131
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1 /* { dg-do run } */
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2 /* { dg-options "-O2 -floop-interchange -fdump-tree-linterchange-details" } */
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3
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4 /* Copied from graphite/interchange-4.c */
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5
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6 #define DEBUG 0
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7 #if DEBUG
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8 #include <stdio.h>
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9 #endif
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10
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11 unsigned u[1024];
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12
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13 static void __attribute__((noinline,noclone,noipa))
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14 foo (int N, int M, unsigned *res)
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15 {
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16 int i, j;
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17 unsigned sum = 0;
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18 if (N > 0)
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19 for (i = 0; i < M; i++)
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20 for (j = 0; j < N; j++)
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21 sum = u[i + 3 * j] - sum;
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22
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23 *res = sum;
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24 }
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25
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26 extern void abort ();
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27
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28 int
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29 main (void)
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30 {
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31 int i, j;
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32 unsigned res;
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33
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34 u[0] = 1;
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35 u[1] = 2;
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36 u[2] = 4;
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37 u[3] = 5;
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38 u[4] = 7;
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39 u[5] = 8;
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40
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41 foo (2, 3, &res);
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42
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43 #if DEBUG
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44 fprintf (stderr, "res = %d \n", res);
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45 #endif
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46
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47 if (res != 13)
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48 abort ();
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49
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50 return 0;
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51 }
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52
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53 /* { dg-final { scan-tree-dump-not "is interchanged" "linterchange"} } */