1/* { dg-do compile } */ 2/* { dg-options "-O2 -fdump-tree-fre1-stats" } */ 3 4int vnum_test8(int *data) 5{ 6 int i; 7 int stop = data[3]; 8 int m = data[4]; 9 int n = m; 10 int p; 11 for (i=0; i<stop; i++) { 12 int k = data[2]; 13 data[k] = 2; 14 data[0] = m - n; 15 k = data[1]; 16 m = m + k; 17 n = n + k; 18 p = data[0]; 19 } 20 return p; 21} 22/* We should eliminate m - n, and set n = n + k into n = m, and 23 set p to 0 */ 24/* { dg-final { scan-tree-dump-times "Eliminated: 4" 1 "fre1"} } */ 25/* { dg-final { cleanup-tree-dump "fre1" } } */ 26