gcc/testsuite/gcc.dg/strict-overflow-5.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-fstrict-overflow -O2 -fdump-tree-optimized" } */
   3
   4 /* We can only unroll when using strict overflow semantics.  */
   5
   6 int foo (int i)
   7 {
   8   int index;
   9   int r=0;
  10
  11   for (index = i; index <= i+4; index+=2)
  12     r++;
  13
  14   return r;
  15 }
  16
  17 /* { dg-final { scan-tree-dump "return 3" "optimized" } } */
  18 /* { dg-final { cleanup-tree-dump "optimized" } } */
  19