[thirdparty/gcc.git] / gcc / testsuite / gcc.dg / 20141029-1.c

/* { dg-do compile } */
/* { dg-options "-fstrict-volatile-bitfields -fdump-rtl-final" } */

#define PERIPH (*(volatile struct system_periph *)0x81234)

struct system_periph {
  union {
    unsigned short WORD;
    struct {
      unsigned short a:1;
      unsigned short b:1;
      unsigned short  :5;
      unsigned short c:1;
      unsigned short  :8;
    } BIT;
  } ALL;
} __attribute__((aligned(2)));

void
foo()
{
  while (1)
    {
      PERIPH.ALL.BIT.a = 1;
    }
}
/* { dg-final { scan-rtl-dump-times "mem/v(/.)*:HI" 4 "final" } } */
Commit	Line	Data
40f94f7d DD	1	/* { dg-do compile } */
	2	/* { dg-options "-fstrict-volatile-bitfields -fdump-rtl-final" } */
	3
	4	#define PERIPH ((volatile struct system_periph )0x81234)
	5
	6	struct system_periph {
	7	union {
	8	unsigned short WORD;
	9	struct {
	10	unsigned short a:1;
	11	unsigned short b:1;
	12	unsigned short :5;
	13	unsigned short c:1;
	14	unsigned short :8;
	15	} BIT;
	16	} ALL;
b6dd42a9	17	} __attribute__((aligned(2)));
40f94f7d DD	18
	19	void
	20	foo()
	21	{
	22	while (1)
	23	{
	24	PERIPH.ALL.BIT.a = 1;
	25	}
	26	}
	27	/* { dg-final { scan-rtl-dump-times "mem/v(/.):HI" 4 "final" } } /