[thirdparty/gcc.git] / gcc / testsuite / gcc.dg / tree-ssa / alias-36.c

/* PR tree-optimization/80934 - bzero should be assumed not to escape
   pointer argument
   { dg-do compile }
   { dg-options "-O2 -fdump-tree-alias" } */

void foobar (void);

void f (void);

void g (void)
{
  char d[32];
  __builtin_memset (d, 0, sizeof d);
  f ();
  if (*d != 0)
    foobar ();
}

void h (void)
{
  char d[32];
  __builtin_bzero (d, sizeof d);
  f ();
  if (*d != 0)
    foobar ();
}

/* { dg-final { scan-tree-dump-not "memset|foobar|bzero" "alias" } } */
Commit	Line	Data
b3d8d88e MS	1	/* PR tree-optimization/80934 - bzero should be assumed not to escape
	2	pointer argument
	3	{ dg-do compile }
	4	{ dg-options "-O2 -fdump-tree-alias" } */
	5
	6	void foobar (void);
	7
	8	void f (void);
	9
	10	void g (void)
	11	{
	12	char d[32];
	13	__builtin_memset (d, 0, sizeof d);
	14	f ();
	15	if (*d != 0)
	16	foobar ();
	17	}
	18
	19	void h (void)
	20	{
	21	char d[32];
	22	__builtin_bzero (d, sizeof d);
	23	f ();
	24	if (*d != 0)
	25	foobar ();
	26	}
	27
	28	/* { dg-final { scan-tree-dump-not "memset\|foobar\|bzero" "alias" } } */