re PR tree-optimization/33291 (a+=2; a+=2 not simplified to a+=4; with -O3 ...
[gcc.git] / gcc / testsuite / gcc.dg / tree-ssa / loop-22.c
1 /* { dg-options "-O2 -fdump-tree-final_cleanup" } */
2
3 int a[100];
4
5 void test (int n)
6 {
7 int i;
8
9 for (i = 0; i < n; i += 3)
10 a[i] = i;
11 }
12
13 /* We used to replace the exit test "i < n" by "i != ((n-1)/3) * 3 + 1". Although
14 correct, this transformation is obviously harmful. */
15
16 /* { dg-final { scan-tree-dump-times "/" 0 "final_cleanup" } } */
17 /* { dg-final { cleanup-tree-dump "final_cleanup" } } */