gcc/testsuite/gcc.c-torture/execute/pr63641.c

   1 /* PR tree-optimization/63641 */
   2
   3 __attribute__ ((noinline, noclone)) int
   4 foo (unsigned char b)
   5 {
   6   if (0x0 <= b && b <= 0x8)
   7     goto lab;
   8   if (b == 0x0b)
   9     goto lab;
  10   if (0x0e <= b && b <= 0x1a)
  11     goto lab;
  12   if (0x1c <= b && b <= 0x1f)
  13     goto lab;
  14   return 0;
  15 lab:
  16   return 1;
  17 }
  18
  19 __attribute__ ((noinline, noclone)) int
  20 bar (unsigned char b)
  21 {
  22   if (0x0 <= b && b <= 0x8)
  23     goto lab;
  24   if (b == 0x0b)
  25     goto lab;
  26   if (0x0e <= b && b <= 0x1a)
  27     goto lab;
  28   if (0x3c <= b && b <= 0x3f)
  29     goto lab;
  30   return 0;
  31 lab:
  32   return 1;
  33 }
  34
  35 char tab1[] = { 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 1, 0, 0, 1, 1,
  36                 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1 };
  37 char tab2[] = { 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 1, 0, 0, 1, 1,
  38                 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0,
  39                 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  40                 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1 };
  41
  42 int
  43 main ()
  44 {
  45   int i;
  46   asm volatile ("" : : : "memory");
  47   for (i = 0; i < 256; i++)
  48     if (foo (i) != (i < 32 ? tab1[i] : 0))
  49       __builtin_abort ();
  50   for (i = 0; i < 256; i++)
  51     if (bar (i) != (i < 64 ? tab2[i] : 0))
  52       __builtin_abort ();
  53   return 0;
  54 }