gcc/testsuite/gcc.dg/fold-compare-1.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-original" } */
   3
   4 int test1(int a, int b)
   5 {
   6   return ~a == ~b;
   7 }
   8
   9 int test2(int c, int d)
  10 {
  11   return -c == -d;
  12 }
  13
  14 int test3(int e)
  15 {
  16   return -e == 5;
  17 }
  18
  19 int test4(int f)
  20 {
  21   return ~f == 5;
  22 }
  23
  24 int test5(int g, int h)
  25 {
  26   return ~g < ~h;
  27 }
  28
  29 int test6(int i, int j)
  30 {
  31   return ~i >= ~j;
  32 }
  33
  34 int test7(int k)
  35 {
  36   return ~k < 3;
  37 }
  38
  39 int test8(int l)
  40 {
  41   return ~l >= 2;
  42 }
  43
  44 /* { dg-final { scan-tree-dump-times "b == a" 1 "original" } } */
  45 /* { dg-final { scan-tree-dump-times "c == d" 1 "original" } } */
  46 /* { dg-final { scan-tree-dump-times "e == -5" 1 "original" } } */
  47 /* { dg-final { scan-tree-dump-times "f == -6" 1 "original" } } */
  48 /* { dg-final { scan-tree-dump-times "h < g" 1 "original" } } */
  49 /* { dg-final { scan-tree-dump-times "j >= i" 1 "original" } } */
  50 /* { dg-final { scan-tree-dump-times "k >= -3" 1 "original" } } */
  51 /* { dg-final { scan-tree-dump-times "l < -2" 1 "original" } } */
  52