1 /* { dg-do compile } */
2 /* { dg-options "-O2 -fdump-tree-optimized -fpredictive-commoning" } */
3 
4 double in;
5 extern void Write (double);
foo(void)6 void foo (void)
7 {
8   static double X[9];
9   int i;
10         X[1] = in * in;
11         for (i = 2; i <= 8; i++)
12             X[i] = X[i - 1] * X[1];
13         Write (X[5]);
14 }
15 
16 /* Load of X[i - i] can be omitted by reusing X[i] in previous iteration.  */
17 /* { dg-final { scan-tree-dump-not ".* = MEM.*;" "optimized" } } */
18