[Bug target/52129] wrong code to pass parameters to tail call function

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52129

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jakub at gcc dot gnu.org

--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-02-06 
08:02:36 UTC ---
Reduced testcase (-march=armv7-a -mthumb -O2):

extern void abort (void);
struct S { void *p; unsigned int q; };
struct T { char a[64]; char b[64]; } t;

__attribute__((noinline, noclone)) int
foo (void *x, struct S s, void *y, void *z)
{
  if (x != &t.a[2] || s.p != &t.b[5] || s.q != 27 || y != &t.a[17] || z !=
&t.b[17])
    abort ();
  return 29;
}

__attribute__((noinline, noclone)) int
bar (void *x, void *y, void *z, struct S s, int t, struct T *u)
{
  return foo (x, s, &u->a[t], &u->b[t]);
}

int
main ()
{
  struct S s = { &t.b[5], 27 };
  if (bar (&t.a[2], (void *) 0, (void *) 0, s, 17, &t) != 29)
    abort ();
  return 0;
}