> Well, it doesn't seem like there's a lot of difference between doing
> it in the generic expander bits vs target expander bits -- the former
> just calls into the latter for the most part.  Thus if the
> subreg-promoted state is available in the target expander, I'd expect
> it to be available in the generic expander.

Ah, sorry I meant in the [sign|zero]extend expanders rather than the
compare expanders in order to catch promoted subregs from other origins
as well.  Maybe that doesn't work, though?

Regards
 Robin

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