[Bug rtl-optimization/78911] [5/6/7 Regression] Infinite loop at -O2/O3 optimization levels while trying to compile server.c from Wine-2.0-rc2

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78911

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

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

--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Slightly cleaned up testcase:

/* PR rtl-optimization/78911 */
/* { dg-do compile } */
/* { dg-options "-O3 -fPIC -fno-strict-aliasing -fno-omit-frame-pointer" } */
/* { dg-additional-options "-fPIC" { target fpic } } */
/* { dg-additional-options "-march=pentium-m" { target ia32 } } */

int a, b, d, e;
long long *c;

static int
foo (long long *x)
{
  return __sync_val_compare_and_swap (x, b, a);
}

void
bar (void)
{
  if (!c)
    return;
  e = foo (&c[d]);
}

Started hanging with r216281.