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/* { dg-do run } */
/* { dg-options "-O2 -floop-interchange -fdump-tree-linterchange-details" } */
/* Copied from graphite/interchange-4.c */
#define DEBUG 0
#if DEBUG
#include <stdio.h>
#endif
unsigned u[1024];
static void __attribute__((noinline,noclone,noipa))
foo (int N, int M, unsigned *res)
{
int i, j;
unsigned sum = 0;
if (N > 0)
for (i = 0; i < M; i++)
for (j = 0; j < N; j++)
sum = u[i + 3 * j] - sum;
*res = sum;
}
extern void abort ();
int
main (void)
{
int i, j;
unsigned res;
u[0] = 1;
u[1] = 2;
u[2] = 4;
u[3] = 5;
u[4] = 7;
u[5] = 8;
foo (2, 3, &res);
#if DEBUG
fprintf (stderr, "res = %d \n", res);
#endif
if (res != 13)
abort ();
return 0;
}
/* { dg-final { scan-tree-dump-not "is interchanged" "linterchange"} } */
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