gcc/testsuite/gcc.dg/pr46909.c

   1 /* PR tree-optimization/46909 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O2 -fdump-tree-ifcombine" } */
   4
   5 extern void abort ();
   6
   7 int
   8 __attribute__ ((__noinline__))
   9 foo (unsigned int x)
  10 {
  11   if (! (x == 4 || x == 6) || (x == 2 || x == 6))
  12     return 1;
  13   return -1;
  14 }
  15
  16 /* { dg-final { scan-tree-dump "optimizing two comparisons to x_\[0-9\]+\\(D\\) != 4" "ifcombine" } } */
  17 /* { dg-final { cleanup-tree-dump "ifcombine" } } */