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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug bootstrap/95582] [11 Regression] LTO lean + PGO bootstrap is
 broken in Ada
Date: Thu, 10 Dec 2020 14:01:01 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D95582

--- Comment #19 from Richard Biener <rguenth at gcc dot gnu.org> ---
So I'm going to look at this again.  Some random thoughts on the Ada bools
though.  It would be nice if the Ada FE could leave boolean_type_node
untouched so that when the middle-end produces a compare to feed a branch
it does not end up using the 8-bit precision bool (because there's no out-of
range values to be considered for a compare result).  Basically keep the
Ada boolean "data type" separate from the middle-end boolean "logical type".

That said, I've ventured into the vectorizer detail failing recently and th=
us,
revisiting for a fix (or rather, [re-]understanding).=