gcc/testsuite/gcc.dg/ipa/iinline-4.c

/* Verify that simple indirect calls are inlined even without early
   inlining..  */
/* { dg-do compile } */
/* { dg-options "-O3 -fdump-ipa-inline -fno-early-inlining -fno-ipa-icf"  } */

struct S
{
  int i;
  void (*f)(struct S *);
  unsigned u;
};

struct U
{
  struct U *next;
  struct S s;
  short a[8];
};

extern void non_existent(struct S *p, int);

/* ----- 1 ----- */

static void hooray1 (struct S *p)
{
  non_existent (p, 1);
}

static void hiphip1 (struct S *p)
{
  p->f (p);
}

int test1 (void)
{
  struct S s;
  s.i = 1234;
  s.f = hooray1;
  s.u = 1001;
  hiphip1 (&s);
  return 0;
}

/* ----- 2 ----- */

struct S *gp;

static void hooray2 (struct S *p)
{
  non_existent (p, 2);
}

static void hip2 (struct S *p)
{
  p->f (p);
}

static void hiphip2 (struct S *p)
{
  hip2 (p);
}

int test2 (void)
{
  struct S *p = gp;
  p->i = 2341;
  p->f = hooray2;
  p->u = 1002;
  hiphip2 (p);
  return 0;
}

/* ----- 3 ----- */

static void hooray3 (struct S *p)
{
  non_existent (p, 2);
}

static void hip3 (struct S *p)
{
  p->f (p);
}

static __attribute__ ((flatten)) void hiphip3 (struct S *p)
{
  hip3 (p);
}

int test3 (void)
{
  struct S *p = gp;
  p->i = 2341;
  p->f = hooray3;
  p->u = 1003;
  hiphip3 (p);
  return 0;
}

/* ----- 4 ----- */

static void hooray4 (struct S *p)
{
  non_existent (p, 3);
}

static void hiphip4 (struct S s)
{
  s.f (&s);
}

int test4(void)
{
  struct S s;
  s.i = 3412;
  s.f = hooray4;
  s.u = 1004;
  hiphip4 (s);
  return 0;
}

/* ----- 5 ----- */

struct U *gu;

static void hooray5 (struct S *p)
{
  non_existent (p, 5);
}

static void hip5 (struct S *p)
{
  p->f (p);
}

static void hiphip5 (struct U *u)
{
  hip5 (&u->s);
}

int test5 (void)
{
  struct U *u = gu;
  u->next = u;
  u->s.i = 9876;
  u->s.f = hooray5;
  u->s.u = 1005;
  hiphip5 (u);
  return 0;
}

/* ----- 6 ----- */

static void hooray6 (struct S *p)
{
  non_existent (p, 6);
}

static void hip6 (struct S *p)
{
  p->f (p);
}

static __attribute__ ((flatten)) void hiphip6 (struct U *u)
{
  hip6 (&u->s);
}

int test6 (void)
{
  struct U *u = gu;
  u->next = u;
  u->s.i = 9876;
  u->s.f = hooray6;
  u->s.u = 1006;
  hiphip6 (u);
  return 0;
}

/* ----- 7 ----- */

struct S **gdp;


static void hooray7 (struct S *p)
{
  non_existent (p, 7);
}

static void hip7 (struct S *p)
{
  p->f (p);
  gdp = &p;
}

static void hiphip7 (struct S *p)
{
  hip7 (p);
  gdp = &p;
}

int test7 (void)
{
  struct S *p = gp;
  p->i = 7341;
  p->f = hooray7;
  p->u = 1007;
  hiphip7 (p);
  return 0;
}



/* { dg-final { scan-ipa-dump "hooray1\[^\\n\]*inline copy in test1"  "inline"  } } */
/* { dg-final { scan-ipa-dump "hooray2\[^\\n\]*inline copy in test2"  "inline"  } } */
/* { dg-final { scan-ipa-dump "hooray3\[^\\n\]*inline copy in test3"  "inline"  } } */
/* { dg-final { scan-ipa-dump "hooray4\[^\\n\]*inline copy in test4"  "inline"  { xfail { { hppa*-*-* } && { ! lp64 } } } } } */
/* { dg-final { scan-ipa-dump "hooray5\[^\\n\]*inline copy in test5"  "inline"  } } */
/* { dg-final { scan-ipa-dump "hooray6\[^\\n\]*inline copy in test6"  "inline"  } } */
/* { dg-final { scan-ipa-dump "hooray7\[^\\n\]*inline copy in test7"  "inline"  } } */