From: Jeff Law <jeffreyalaw@gmail.com>
To: Richard Biener <richard.guenther@gmail.com>
Cc: Aldy Hernandez <aldyh@redhat.com>, GCC Mailing List <gcc@gcc.gnu.org>
Subject: Re: replacing the backwards threader and more
Date: Mon, 14 Jun 2021 22:03:37 -0600 [thread overview]
Message-ID: <e05e186e-2bf5-09b1-46fd-246fbdeebf41@gmail.com> (raw)
In-Reply-To: <CAFiYyc24R2GjXTtPeN0jOQKF6jtQvijnFF1gktzDTMMPMrb1nw@mail.gmail.com>
On 6/14/2021 12:40 AM, Richard Biener wrote:
>
>> I bet it's going to be tougher to remove DOM's threader. It knows how
>> to do thinks like resolve memory references using temporary equivalences
>> and such. But I bet it's enough to drop the VRP based threaders.
> Yes. In fact I am wondering if adding threading to the not iterating FRE
> would make it possible to drop DOM, replacing it with instances of FRE.
I'd think so. I'd approach as:
1. Remove the VRP threader instances.
2. Drop cprop and redundancy elimination from DOM using FRE instead
3. What's left of DOM is just forward jump threading. Revamp &
simplify. Then either make it a distinct pass or as a sub-pass of FRE.
But one could just as easily look at adding threading to FRE and just
killing DOM and its jump threading.
Jeff
next prev parent reply other threads:[~2021-06-15 4:03 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-09 11:48 Aldy Hernandez
2021-06-09 12:09 ` Richard Biener
2021-06-09 15:34 ` Aldy Hernandez
2021-06-09 16:18 ` Richard Biener
2021-06-09 19:47 ` Jeff Law
2021-06-09 20:39 ` Aldy Hernandez
2021-06-09 20:43 ` Jeff Law
2021-06-21 14:40 ` Aldy Hernandez
2021-06-24 16:14 ` Jeff Law
2021-06-25 7:54 ` Richard Biener
2021-06-25 7:58 ` Richard Biener
2021-06-25 16:20 ` Aldy Hernandez
2021-06-25 17:19 ` Martin Sebor
2021-06-28 6:17 ` Aldy Hernandez
2021-06-28 22:29 ` Martin Sebor
2021-06-29 0:32 ` Aldy Hernandez
2021-06-29 22:16 ` Martin Sebor
2021-06-30 6:07 ` Aldy Hernandez
2021-06-28 8:22 ` Richard Biener
2021-06-28 12:05 ` Aldy Hernandez
2021-06-13 21:59 ` Jeff Law
2021-06-14 6:40 ` Richard Biener
2021-06-15 4:03 ` Jeff Law [this message]
2021-06-15 5:39 ` Aldy Hernandez
2021-06-15 16:35 ` Jeff Law
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