From: Jeff Law <jeffreyalaw@gmail.com>
To: Andrew Pinski <pinskia@gmail.com>,
Aldy Hernandez <aldyh@redhat.com>,
Andrew MacLeod <amacleod@redhat.com>,
GCC Mailing List <gcc@gcc.gnu.org>
Subject: Re: Using ranger from cfgexpand
Date: Sat, 2 Sep 2023 19:21:11 -0600 [thread overview]
Message-ID: <508aee8b-3e6b-788d-eda3-27c5282f4306@gmail.com> (raw)
In-Reply-To: <CA+=Sn1m_acDp7t69R5hvrk3Fr=smz17GZFR--sx+o4J3EyFiLg@mail.gmail.com>
On 9/2/23 18:40, Andrew Pinski via Gcc wrote:
> Hi,
> I was trying to use the ranger from inside of cfgexpand but since at
> this point we have a mix of RTL and gimple basic blocks, things fall
> over very fast.
>
> First does it make sense to use the ranger from expand or should we
> change the gimple IR in isel instead if we have a better way of doing
> an expansion.
>
> In this case we have MIN_EXPR<a, 1> where a has a range of [0,INF] and
> I want to expand it as (a != 0) to get better code.
I very much want to get to a point where we can use ranges during
expansion, but we're probably going to be limited to global ranges since
as you note, we're in a mixed IL state and ranger is probably going to
be confused as hell.
Jeff
next prev parent reply other threads:[~2023-09-03 1:21 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-03 0:40 Andrew Pinski
2023-09-03 1:21 ` Jeff Law [this message]
2023-09-03 6:03 ` Richard Biener
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