gnu/dist/gcc4/gcc/testsuite/gcc.c-torture/execute/20021120-3.c

   1 /* Test whether a partly call-clobbered register will be moved over a call.
   2    Although the original test case didn't use any GNUisms, it proved
   3    difficult to reduce without the named register extension.  */
   4 #if __SH64__ == 32
   5 #define LOC asm ("r10")
   6 #else
   7 #define LOC
   8 #endif
   9
  10 unsigned int foo (char *c, unsigned int x, unsigned int y)
  11 {
  12   register unsigned int z LOC;
  13
  14   sprintf (c, "%d", x / y);
  15   z = x + 1;
  16   return z / (y + 1);
  17 }
  18
  19 int main ()
  20 {
  21   char c[16];
  22
  23   if (foo (c, ~1U, 4) != (~0U / 5))
  24     abort ();
  25   exit (0);
  26 }