1/* { dg-do compile } */
2/* { dg-options "-fdump-tree-gimple" } */
3
4/* PR tree-optimization/20470:
5    Missing fold to abs(x) when x == MINUS_EXPR.  */
6#define abs(x)  ((x) >= 0 ? (x) : -(x))
7
8int i,j,k;
9void f1()
10{
11  i = abs(j-k);
12}
13
14/* { dg-final { scan-tree-dump-times "ABS_EXPR" 1 "gimple" } } */
15/* { dg-final { cleanup-tree-dump "gimple" } } */
16