[Bug tree-optimization/68695] [6 Regression] Performance regression related to ssa patch / ifcvt

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68695

--- Comment #11 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Segher Boessenkool from comment #4)
> RA assigns registers so that one of the two moves under the if
> becomes a nop, and then bb-reorder duplicates the code.

And then nothing cleans up the useless hard-reg propagations?

Otherwise what bb-reorder does sounds sensible.