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Re: [PATCH] simplify-rtx: Remove non-simplifying simplification (PR77729)
On Thu, Oct 05, 2017 at 10:46:13AM +0200, Richard Biener wrote:
> >> PR rtl-optimization/77729
> >> * simplify-rtx.c (simplify_binary_operation_1): Delete the (X&C1)|C2
> >> to (X&(C1&~C2))|C2 transformations.
> > OK for the trunk. I'm not sure if the BZ in question qualifies this
> > patch for backporting though. Release managers have the final say on
> > the backport question.
>
> We usually avoid doing "optimization regression" backports unless very very
> important and obvious.
It's very obvious, and quite important, but not very very important so I
won't champion backports :-)
Segher