From: Jeff Law <jeffreyalaw@gmail.com>
To: gcc-patches@gcc.gnu.org
Subject: Re: [PATCH]middle-end simplify complex if expressions where comparisons are inverse of one another.
Date: Thu, 7 Jul 2022 10:07:53 -0600 [thread overview]
Message-ID: <4b1704f1-7e0b-339b-e4d1-85436fde6c02@gmail.com> (raw)
In-Reply-To: <CA+=Sn1==L90iCindptqUXtmXu+jn_JxdtVJQvhF3UwU7Wo2OhQ@mail.gmail.com>
On 7/5/2022 8:09 PM, Andrew Pinski via Gcc-patches wrote:
>
> Not your fault but there are now like two different predicates for a
> boolean like operand.
> zero_one_valued_p and truth_valued_p and a third way to describe it is
> to use SSA_NAME and check ssa_name_has_boolean_range.
The latter is meant to catch cases where analysis indicates that a given
SSA_NAME only takes on the values 0 or 1, regardless of the actual size
of the SSA_NAME.
It pre-dates having reasonable range information available in DOM and
from reviewing the existing uses in DOM, I would expect Ranger to make
most, if not all, of this code useless.
jeff
prev parent reply other threads:[~2022-07-07 16:07 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-16 13:31 Tamar Christina
2022-06-20 8:56 ` Richard Biener
2022-07-05 15:15 ` Tamar Christina
2022-07-06 2:09 ` Andrew Pinski
2022-07-06 16:06 ` Tamar Christina
2022-07-06 19:37 ` Andrew Pinski
2022-07-07 7:48 ` Tamar Christina
2022-07-08 11:03 ` Richard Biener
2022-09-23 9:16 ` Tamar Christina
2022-09-23 13:10 ` Richard Biener
2022-09-23 13:27 ` Tamar Christina
2022-09-26 10:42 ` Richard Biener
2022-10-31 11:42 ` Tamar Christina
2022-10-31 21:23 ` Jeff Law
2022-07-07 16:07 ` Jeff Law [this message]
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