sdcc/support/regression/tests/gcc-torture-execute-20180112-1.c

   1 /*
   2 20180112-1.c from the execute part of the gcc torture tests.
   3 */
   4
   5 #include <testfwk.h>
   6
   7 #include <stdint.h>
   8
   9 /* PR rtl-optimization/83565 */
  10 /* Testcase by Sergei Trofimovich <slyfox@inbox.ru> */
  11
  12 typedef uint32_t u32;
  13
  14 u32 bug (u32 * result);
  15 u32 bug (u32 * result)
  16 {
  17   volatile u32 ss = 0xFFFFffff;
  18   volatile u32 d  = 0xEEEEeeee;
  19   u32 tt = d & 0x00800000;
  20   u32 r  = tt << 8;
  21
  22   r = (r >> 31) | (r <<  1);
  23
  24   u32 u = r^ss;
  25   u32 off = u >> 1;
  26
  27   *result = tt;
  28   return off;
  29 }
  30
  31 void
  32 testTortureExecute (void)
  33 {
  34 #ifndef __SDCC_pdk14 // Lack of memory
  35   u32 l;
  36   u32 off = bug(&l);
  37   if (off != 0x7fffffff)
  38     ASSERT (0);
  39   return;
  40 #endif
  41 }