Viewing file:  loop-interchange-15.c (1 KB) -rw-r--r--
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/* PR tree-optimization/83337 */
/* { dg-do run { target int32plus } } */
/* { dg-options "-O2 -floop-interchange" } */
/* { dg-require-effective-target alloca } */
/* { dg-skip-if "too big stack" { visium-*-* } } */
/* Copied from graphite/interchange-5.c */
#define DEBUG 0
#if DEBUG
#include <stdio.h>
#endif
#define N 100
#define M 1111
extern void abort ();
static void __attribute__((noipa))
foo (int n)
{
int i, j;
struct S { char d[n]; int a : 3; int b : 17; int c : 12; };
struct S A[N][M];
for (i = 0; i < N; i++)
{
asm volatile ("" : : "g" (&A[0][0]) : "memory");
for (j = 0; j < M; j++)
A[i][j].b = 2;
}
asm volatile ("" : : "g" (&A[0][0]) : "memory");
for (i = 0; i < M; i++)
for (j = 0; j < N; j++)
A[j][i].b = 5 * A[j][i].b;
asm volatile ("" : : "g" (&A[0][0]) : "memory");
int res = A[0][0].b + A[N-1][M-1].b;
#if DEBUG
fprintf (stderr, "res = %d \n", res);
#endif
if (res != 20)
abort ();
}
int
main (void)
{
foo (1);
foo (8);
return 0;
}
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