sdcc/support/regression/tests/gcc-torture-execute-pr61306-1.c

   1 /*
   2    pr61306-1.c from the execute part of the gcc torture tests.
   3  */
   4
   5 #include <testfwk.h>
   6
   7 #ifdef __SDCC
   8 #pragma std_c99
   9 #endif
  10
  11 #include <stdint.h>
  12 #include <limits.h>
  13
  14 #define fake_const_swab32(x) ((uint32_t)(                     \
  15         (((uint32_t)(x) & (uint32_t)0x000000ffUL) << 24) |    \
  16         (((uint32_t)(x) & (uint32_t)0x0000ff00UL) <<  8) |    \
  17         (((uint32_t)(x) & (uint32_t)0x00ff0000UL) >>  8) |    \
  18         (( (int32_t)(x) &  (int32_t)0xff000000UL) >> 24)))
  19
  20 /* Previous version of bswap optimization failed to consider sign extension
  21    and as a result would replace an expression *not* doing a bswap by a
  22    bswap.  */
  23
  24 #ifndef __SDCC_pdk14 // Lack of memory
  25 uint32_t
  26 fake_bswap32 (uint32_t in)
  27 {
  28   return fake_const_swab32 (in);
  29 }
  30 #endif
  31
  32 void
  33 testTortureExecute (void)
  34 {
  35 #ifndef __SDCC_pdk14 // Lack of memory
  36   if (sizeof (int32_t) * CHAR_BIT != 32)
  37     return;
  38   if (sizeof (uint32_t) * CHAR_BIT != 32)
  39     return;
  40   if (fake_bswap32 (0x87654321) != 0xffffff87)
  41     ASSERT (0);
  42 #endif
  43 }