[Issue 20990] Optimizer should move cold branches to the end of the function

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=20990

Iain Buclaw <ibuclaw at gdcproject.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ibuclaw at gdcproject.org

--- Comment #2 from Iain Buclaw <ibuclaw at gdcproject.org> ---
(In reply to Walter Bright from comment #1)
> (In reply to Walter Bright from comment #0)
> > assert is a cold branch, and DMD move the assert to the end for the example:
> 
> I meant it does "not move" the assert.

Everything that follows the assert should also be considered cold too.  Though
hopefully "unreachable" warnings/errors would occur before that point.

--