llvm-gcc-4.2/gcc/testsuite/gcc.target/xstormy16/sfr/10_set_sfrb_bit_7.c

/* { dg-options { -nostartfiles below100.o -Tbelow100.ld -O2 } } */
/* { dg-final { scan-assembler "set1 32532,#7" } } */

#define SFR (*((volatile unsigned char*)0x7f14))
unsigned char *p = (unsigned char *) 0x7f14;

void
Do (void)
{
  SFR |= 0x80;
}

int
main (void)
{
  *p = 0x34;
  Do ();
  return (*p == 0xb4) ? 0 : 1;
}