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From: "ebotcazou 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 14:21:19 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D95582

--- Comment #20 from Eric Botcazou <ebotcazou 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 typ=
e".

IIRC I tried that but this was pessimizing because of spurious conversions.=