[dmd-internals] [D-Programming-Language/dmd] 41b141: fix Issue 6189 - [64bit] optimizer: register conte...

[Don Clugston]

Awesome, that was another really nasty bug.
That leaves only the ABI bug (bug 5570) as the only remaining 64 bit
wrong-code bug. What is the status of it? You've made a few commits
towards fixing it, but nothing in the comments for the bug -- should
some cases work now?
Would it be useful to create some test cases?

>  Log Message:
>  -----------
>  fix Issue 6189 - [64bit] optimizer: register content destroyed in function prolog