gcc/testsuite/gcc.target/arm/pr65067.c

   1 /* { dg-do compile } */
   2 /* { dg-require-effective-target arm_thumb2_ok } */
   3 /* { dg-options "-mthumb -mcpu=cortex-m3 -O2" } */
   4
   5 struct tmp {
   6  unsigned int dummy;
   7  union {
   8   struct {
   9    unsigned int xyz : 1;
  10    unsigned int mode: 3;
  11    unsigned int res : 28;
  12   } bf;
  13   unsigned int wordval;
  14  } reg;
  15 };
  16
  17 void set_mode(int mode)
  18 {
  19  volatile struct tmp *t = (struct tmp *) 0x1000;
  20  t->reg.bf.mode = mode;
  21 }
  22
  23 /* { dg-final { scan-assembler "bfi" } } */