gcc/testsuite/gcc.dg/tree-ssa/pr20470.c

   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
   8 int i,j,k;
   9 void 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" } } */