gcc/testsuite/gcc.dg/fold-compare-5.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-fdump-tree-original" } */
   3
   4 int test1 (int a)
   5 {
   6   return 2 - a == a;
   7 }
   8 int test2 (int a)
   9 {
  10   return 1 - a == a;
  11 }
  12 int test3 (int a)
  13 {
  14   return 1 - a != a;
  15 }
  16
  17 /* { dg-final { scan-tree-dump-times "return 2 - a == a" 1 "original" } } */
  18 /* { dg-final { scan-tree-dump-times "return 0" 1 "original" } } */
  19 /* { dg-final { scan-tree-dump-times "return 1" 1 "original" } } */