https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115710
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |rguenth at gcc dot gnu.org
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
I think this is a pass ordering issue between complex lowering, forwprop and
powcabs.
This is also a missed CSE opportunity in PREs VN instance:
_5 = REALPART_EXPR <(*a_9(D))[_1]>;
_2 = (*a_9(D))[_1];
_4 = IMAGPART_EXPR <(*a_9(D))[_1]>;
cabs_11 = REALPART_EXPR <_2>;
here the realpart of _2 should have been CSEd to _5.
I wonder if we shouldn't do CABS expansion during complex lowering instead?
Both are technically to get closer to the target.
I'm putting it on my TODO but I don't expect to have cycles to look at
any of the above.
