gcc/testsuite/gcc.dg/20050922-2.c

   1 /* 20050922-1.c does not trigger the expand_shift rotate bug on sh4-elf, but
   2    this does.  */
   3
   4 /* { dg-do run } */
   5 /* { dg-options "-O1 -std=c99" } */
   6
   7 extern void abort (void);
   8 extern void exit (int);
   9
  10 #if __INT_MAX__ == 2147483647
  11 typedef unsigned int uint32_t;
  12 #elif __LONG_MAX__ == 2147483647
  13 typedef unsigned long uint32_t;
  14 #else
  15 #error unable to find 32-bit integer type
  16 #endif
  17
  18 #define rotl(x,n)   (((x) << ((int)(n))) | ((x) >> (32 - (int)(n))))
  19
  20 uint32_t
  21 f (uint32_t a, uint32_t b)
  22 {
  23
  24   b = rotl (a, b & 31);
  25   return b;
  26 }
  27
  28 int
  29 main ()
  30 {
  31   if (f(2,31) != 1)
  32     abort ();
  33   exit (0);
  34 }