gcc/testsuite/gcc.dg/pr64309.c

   1 /* PR middle-end/64309 */
   2 /* { dg-do run } */
   3 /* { dg-options "-fdump-tree-original" } */
   4
   5 int
   6 fn1 (int n)
   7 {
   8   return ((1 << n) & 1) != 0;
   9 }
  10
  11 int
  12 fn2 (int n)
  13 {
  14   return (1 & (1 << n)) != 0;
  15 }
  16
  17 int
  18 fn3 (int n)
  19 {
  20   return ((1 << n) & 1) == 0;
  21 }
  22
  23 int
  24 fn4 (int n)
  25 {
  26   return (1 & (1 << n)) == 0;
  27 }
  28
  29 int
  30 main (void)
  31 {
  32   if (fn1 (0) != 1
  33       || fn1 (1) != 0
  34       || fn1 (2) != 0
  35       || fn1 (3) != 0
  36       || fn1 (4) != 0
  37       || fn1 (5) != 0)
  38     __builtin_abort ();
  39
  40   if (fn2 (0) != 1
  41       || fn2 (1) != 0
  42       || fn2 (2) != 0
  43       || fn2 (3) != 0
  44       || fn2 (4) != 0
  45       || fn2 (5) != 0)
  46     __builtin_abort ();
  47
  48   if (fn3 (0) != 0
  49       || fn3 (1) != 1
  50       || fn3 (2) != 1
  51       || fn3 (3) != 1
  52       || fn3 (4) != 1
  53       || fn3 (5) != 1)
  54     __builtin_abort ();
  55
  56   if (fn4 (0) != 0
  57       || fn4 (1) != 1
  58       || fn4 (2) != 1
  59       || fn4 (3) != 1
  60       || fn4 (4) != 1
  61       || fn4 (5) != 1)
  62     __builtin_abort ();
  63 }
  64
  65 /* { dg-final { scan-tree-dump-not "(<<|>>)" "original" } } */