[Bug tree-optimization/100858] Simple common code hoisting is not performed

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100858

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2021-06-02
     Ever confirmed|0                           |1

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
That's really a duplicate of 100858 - this case can be handled by sinking as
well
since we "sink" the return.  Make it

void bar();

int foo(bool f)
{
    if (f) {
        bar();
        __builtin_abort ();
    }
    else {
        bar();
        return 2;
    }
}

to force hoisting.  Hoisting is done by PRE but that requires a LHS and
doesn't handle calls with side-effects.