gcc/testsuite/gcc.dg/pr66299-1.c

   1 /* PR tree-optimization/66299 */
   2 /* { dg-do run } */
   3 /* { dg-options "-fdump-tree-original" } */
   4
   5 void
   6 test1 (int x)
   7 {
   8   if ((0 << x) != 0
   9       || (1 << x) != 2
  10       || (2 << x) != 4
  11       || (3 << x) != 6
  12       || (4 << x) != 8
  13       || (5 << x) != 10
  14       || (6 << x) != 12
  15       || (7 << x) != 14
  16       || (8 << x) != 16
  17       || (9 << x) != 18
  18       || (10 << x) != 20)
  19     __builtin_abort ();
  20 }
  21
  22 void
  23 test2 (int x)
  24 {
  25   if (!((0 << x) == 0
  26         && (1 << x) == 4
  27         && (2 << x) == 8
  28         && (3 << x) == 12
  29         && (4 << x) == 16
  30         && (5 << x) == 20
  31         && (6 << x) == 24
  32         && (7 << x) == 28
  33         && (8 << x) == 32
  34         && (9 << x) == 36
  35         && (10 << x) == 40))
  36     __builtin_abort ();
  37 }
  38
  39 void
  40 test3 (unsigned int x)
  41 {
  42   if ((0U << x) != 0U
  43       || (1U << x) != 16U
  44       || (2U << x) != 32U
  45       || (3U << x) != 48U
  46       || (4U << x) != 64U
  47       || (5U << x) != 80U
  48       || (6U << x) != 96U
  49       || (7U << x) != 112U
  50       || (8U << x) != 128U
  51       || (9U << x) != 144U
  52       || (10U << x) != 160U)
  53     __builtin_abort ();
  54 }
  55
  56 void
  57 test4 (unsigned int x)
  58 {
  59   if (!((0U << x) == 0U
  60         || (1U << x) == 8U
  61         || (2U << x) == 16U
  62         || (3U << x) == 24U
  63         || (4U << x) == 32U
  64         || (5U << x) == 40U
  65         || (6U << x) == 48U
  66         || (7U << x) == 56U
  67         || (8U << x) == 64U
  68         || (9U << x) == 72U
  69         || (10U << x) == 80U))
  70     __builtin_abort ();
  71 }
  72
  73 void
  74 test5 (int x)
  75 {
  76   if ((0 << x) == 1
  77       || (0 << x) != 0
  78       || (0x8001U << x) != 0x20000U)
  79     __builtin_abort ();
  80 }
  81
  82 int
  83 main (void)
  84 {
  85   test1 (1);
  86   test2 (2);
  87   test3 (4U);
  88   test4 (3U);
  89   test5 (17);
  90 }
  91
  92 /* { dg-final { scan-tree-dump-not "<<" "original" } } */