/* { dg-require-effective-target size32plus } */ #define DEBUG 0 #if DEBUG #include #endif #define N 200 int A[N][N], B[N][N], C[N][N]; static void __attribute__((noinline)) matmult (void) { int i, j, k; for (i = 0; i < N; i++) for (j = 0; j < N; j++) A[i][j] = 0; /* Loops J and K should be interchanged. */ for (i = 0; i < N; i++) for (j = 0; j < N; j++) for (k = 0; k < N; k++) A[i][j] += B[i][k] * C[k][j]; } extern void abort (); int main (void) { int i, j, res = 0; for (i = 0; i < N; i++) for (j = 0; j < N; j++) { B[i][j] = j; C[i][j] = i; } matmult (); for (i = 0; i < N; i++) res += A[i][i]; #if DEBUG fprintf (stderr, "res = %d \n", res); #endif if (res != 529340000) abort (); return 0; } /* PRE destroys the perfect nest and we can't cope with that yet. */ /* { dg-final { scan-tree-dump-times "will be interchanged" 1 "graphite" } } */ /* { dg-final { cleanup-tree-dump "graphite" } } */