[Bug ipa/89139] GCC emits code for static functions that aren't used by the optimized code

[m...@nieper-wisskirchen.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89139

--- Comment #5 from Marc Nieper-Wißkirchen <m...@nieper-wisskirchen.de> ---
Here is a much simpler example, which exhibits the same behavior:

static void c (void (*w) (void))
{
    w ();
}

static void f ()
{
}

static void *x = &f;

void g ()
{
    c (x);
}

The compiler optimizes g to an empty procedure and removes that static variable
x from the output. However, it outputs the unused, static function f.