gcc/testsuite/gcc.dg/vect/vect-early-break_70.c

   1 /* { dg-add-options vect_early_break } */
   2 /* { dg-require-effective-target vect_early_break_hw } */
   3 /* { dg-require-effective-target vect_int } */
   4
   5 /* { dg-final { scan-tree-dump "LOOP VECTORIZED" "vect" { target { ! "x86_64-*-* i?86-*-*" } } } } */
   6
   7 #include <limits.h>
   8 #include <assert.h>
   9
  10 #include "tree-vect.h"
  11
  12 #  define BITSIZEOF_INT 32
  13 #  define BITSIZEOF_LONG 64
  14 #  define BITSIZEOF_LONG_LONG 64
  15
  16 #define MAKE_FUNS(suffix, type)                                         \
  17 __attribute__((noinline)) \
  18 int my_clz##suffix(type x) {                                            \
  19     int i;                                                              \
  20     for (i = 0; i < CHAR_BIT * sizeof (type); i++)                      \
  21         if (x & ((type) 1 << ((CHAR_BIT * sizeof (type)) - i - 1)))     \
  22             break;                                                      \
  23     return i;                                                           \
  24 }
  25
  26
  27 MAKE_FUNS (, unsigned);
  28
  29 extern void abort (void);
  30 extern void exit (int);
  31
  32 #define NUMS32                                  \
  33   {                                             \
  34     0x00000000UL,                               \
  35     0x00000001UL,                               \
  36     0x80000000UL,                               \
  37     0x00000002UL,                               \
  38     0x40000000UL,                               \
  39     0x00010000UL,                               \
  40     0x00008000UL,                               \
  41     0xa5a5a5a5UL,                               \
  42     0x5a5a5a5aUL,                               \
  43     0xcafe0000UL,                               \
  44     0x00cafe00UL,                               \
  45     0x0000cafeUL,                               \
  46     0xffffffffUL                                \
  47   }
  48
  49
  50 unsigned int ints[] = NUMS32;
  51
  52 #define N(table) (sizeof (table) / sizeof (table[0]))
  53
  54 int
  55 main (void)
  56 {
  57   int i;
  58
  59   for (i = 0; i < N(ints); i++)
  60     {
  61       if (ints[i] != 0
  62           && __builtin_clz (ints[i]) != my_clz (ints[i]))
  63           abort ();
  64     }
  65
  66   exit (0);
  67   return 0;
  68 }
  69