gcc/testsuite/gcc.dg/vect/vect-early-break_78.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-additional-options "-O3" } */
   6 /* { dg-final { scan-tree-dump "LOOP VECTORIZED" "vect" { target { ! "x86_64-*-* i?86-*-*" } } } } */
   7
   8 #include <limits.h>
   9 #include <assert.h>
  10
  11 #include "tree-vect.h"
  12
  13 #if __INT_MAX__ > 2147483647L
  14 # if __INT_MAX__ >= 9223372036854775807L
  15 #  define BITSIZEOF_INT 64
  16 # else
  17 #  define BITSIZEOF_INT 32
  18 # endif
  19 #else
  20 # if __INT_MAX__ >= 2147483647L
  21 #  define BITSIZEOF_INT 32
  22 # else
  23 #  define BITSIZEOF_INT 16
  24 # endif
  25 #endif
  26
  27 #if __LONG_MAX__ > 2147483647L
  28 # if __LONG_MAX__ >= 9223372036854775807L
  29 #  define BITSIZEOF_LONG 64
  30 # else
  31 #  define BITSIZEOF_LONG 32
  32 # endif
  33 #else
  34 # define BITSIZEOF_LONG 32
  35 #endif
  36
  37 #if __LONG_LONG_MAX__ > 2147483647L
  38 # if __LONG_LONG_MAX__ >= 9223372036854775807L
  39 #  define BITSIZEOF_LONG_LONG 64
  40 # else
  41 #  define BITSIZEOF_LONG_LONG 32
  42 # endif
  43 #else
  44 # define BITSIZEOF_LONG_LONG 32
  45 #endif
  46
  47 #define MAKE_FUNS(suffix, type)                                         \
  48 int my_clrsb##suffix(type x) {                                          \
  49     int i;                                                              \
  50     int leading = (x >> CHAR_BIT * sizeof (type) - 1) & 1;              \
  51     for (i = 1; i < CHAR_BIT * sizeof (type); i++)                      \
  52         if (((x >> ((CHAR_BIT * sizeof (type)) - i - 1)) & 1)           \
  53             != leading)                                                 \
  54             break;                                                      \
  55     return i - 1;                                                       \
  56 }
  57
  58 MAKE_FUNS (, unsigned);
  59
  60 extern void abort (void);
  61 extern void exit (int);
  62
  63
  64 int
  65 main (void)
  66 {
  67   check_vect ();
  68
  69 #define TEST(x, suffix)                                                 \
  70   if (__builtin_clrsb##suffix (x) != my_clrsb##suffix (x))              \
  71     abort ();
  72
  73 #if BITSIZEOF_INT == 32
  74   TEST(0xffffffffUL,);
  75 #endif
  76   exit (0);
  77 }