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Re: [4.5] Better support for widening multiplies
Steven Bosscher wrote:
> I think all of this just does not belong in fwprop. We're talking
> about sign extension elimination here, and there is a pass for that
> already, see.c.
Wasn't see.c one of those known-broken, works on one target only, passes
of which we seem to have accumulated a few?
Besides, we're not eliminating the sign extensions, we're _propagating_
them to a different place. We also deal with zero extensions, and
shifts . Both Paolo and myself have versions of the patch which utilize
fwprop infrastructure. IMO there's no point in rewriting the whole
thing to fit into a different framework.
Bernd
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