From: Richard Biener <richard.guenther@gmail.com>
To: Jeff Law <law@redhat.com>,Andrew Pinski
<pinskia@gmail.com>,kugan <kugan.vivekanandarajah@linaro.org>
Cc: "gcc-patches@gcc.gnu.org" <gcc-patches@gcc.gnu.org>,Jan Hubicka
<hubicka@ucw.cz>,Martin Jambor <mjambor@suse.cz>
Subject: Re: [RFC][IPA-VRP] Early VRP Implementation
Date: Tue, 19 Jul 2016 18:35:00 -0000 [thread overview]
Message-ID: <3A0A8D76-351F-4ACA-8309-8FEE6B57979E@gmail.com> (raw)
In-Reply-To: <51e838ff-da7e-bae8-c905-4e6d4b3c8a73@redhat.com>
On July 19, 2016 6:19:23 PM GMT+02:00, Jeff Law <law@redhat.com> wrote:
>On 07/14/2016 10:52 PM, Andrew Pinski wrote:
>> On Thu, Jul 14, 2016 at 9:45 PM, kugan
>> <kugan.vivekanandarajah@linaro.org> wrote:
>>>
>>> Hi,
>>>
>>>
>>>
>>> This patch adds a very simple early vrp implementation. This visits
>the
>>> basic blocks in the dominance order and set the Value Ranges (VR)
>for
>>>
>>> SSA_NAMEs in the scope. Use this VR to discover more VRs. Restore
>the old VR
>>> once the scope is exit.
>>
>>
>> Why separate out early VRP from tree-vrp? Just a little curious.
>I wouldn't mind seeing tree-vrp broken down a little -- it's quite
>large
>and there's at least 4 distinct things going on in that file.
>
>1. ASSERT_EXPR handling.
>
>2. Arithmetic on ranges
>
>3. Propagation engine setup, callbacks, etc
>
>4. Range management
>
>There may be others, but it seems at least some of that ought to be
>factored out.
Possibly, but not necessarily because of the proposed pass.
I'd like to see lattices and lattice entries becoming classes and the arithmetic on it being templated on it.
I do have some preliminary patches implementing a aggressive on-drmand VRP for the use in niter analysis and the
Lattice is what makes sharing code difficult (it's a hash-map instead of an array there).
Richard.
>
>Jeff
next prev parent reply other threads:[~2016-07-19 18:35 UTC|newest]
Thread overview: 67+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-15 4:41 [RFC][IPA-VRP] IPA " kugan
2016-07-15 4:42 ` [RFC][IPA-VRP] Disable setting param of __builtin_constant_p to null kugan
2016-07-15 8:43 ` Jan Hubicka
2016-07-25 6:59 ` kugan
2016-07-25 10:02 ` Richard Biener
2016-07-15 4:43 ` [RFC][IPA-VRP] Check for POINTER_TYPE_P before accessing SSA_NAME_PTR_INFO in tree-inline kugan
2016-07-15 4:47 ` Andrew Pinski
2016-07-15 7:03 ` Jakub Jelinek
2016-07-15 7:03 ` kugan
2016-07-15 7:32 ` Richard Biener
2016-07-15 4:44 ` [RFC][IPA-VRP] Re-factor tree-vrp to factor out common code kugan
2016-07-15 4:47 ` [RFC][IPA-VRP] Add support for IPA VRP in ipa-cp/ipa-prop kugan
2016-07-15 12:23 ` Martin Jambor
2016-07-19 8:22 ` kugan
2016-07-19 21:27 ` kugan
2016-07-21 12:54 ` Jan Hubicka
2016-08-30 5:21 ` Kugan Vivekanandarajah
2016-08-30 18:12 ` Prathamesh Kulkarni
2016-08-30 21:10 ` kugan
2016-09-02 12:31 ` Jan Hubicka
2016-07-17 13:24 ` Prathamesh Kulkarni
2016-07-22 12:27 ` [RFC][IPA-VRP] Re-factor tree-vrp to factor out common code kugan
2016-07-22 12:49 ` Richard Biener
2016-07-22 14:34 ` kugan
2016-07-23 10:12 ` kugan
2016-08-16 8:09 ` kugan
2016-08-16 11:56 ` Richard Biener
2016-08-16 22:20 ` kugan
2016-08-17 2:50 ` kugan
2016-08-17 13:46 ` Richard Biener
2016-07-15 4:45 ` [RFC][IPA-VRP] Early VRP Implementation kugan
2016-07-15 4:52 ` Andrew Pinski
2016-07-15 7:08 ` kugan
2016-07-15 7:28 ` Andrew Pinski
2016-07-15 7:33 ` kugan
2016-07-18 11:51 ` Richard Biener
2016-07-22 12:10 ` kugan
2016-07-25 11:18 ` Richard Biener
2016-07-26 12:27 ` kugan
2016-07-26 13:37 ` Richard Biener
2016-07-28 7:36 ` kugan
2016-07-28 11:34 ` Richard Biener
2016-08-03 1:17 ` kugan
2016-08-12 10:43 ` Richard Biener
2016-08-16 7:39 ` [RFC][IPA-VRP] splits out the update_value_range calls from vrp_visit_stmt kugan
2016-08-16 10:58 ` Richard Biener
2016-08-17 2:27 ` kugan
2016-08-17 13:44 ` Richard Biener
2016-08-16 7:45 ` [RFC][IPA-VRP] Early VRP Implementation kugan
2016-08-19 11:41 ` Richard Biener
2016-08-23 2:12 ` Kugan Vivekanandarajah
2016-09-02 8:11 ` Kugan Vivekanandarajah
2016-09-14 12:11 ` Richard Biener
2016-09-14 21:47 ` Jan Hubicka
2016-09-15 7:23 ` Richard Biener
2016-09-15 14:57 ` Jeff Law
2016-09-16 8:59 ` Richard Biener
2016-09-16 6:37 ` kugan
2016-09-16 10:26 ` Richard Biener
2016-09-18 23:40 ` kugan
2016-09-19 13:30 ` Richard Biener
2016-09-20 5:48 ` kugan
2016-07-19 16:19 ` Jeff Law
2016-07-19 18:35 ` Richard Biener [this message]
2016-07-19 20:14 ` Jeff Law
2016-07-15 4:47 ` [RFC][IPA-VRP] Teach tree-vrp to use the VR set in params kugan
2016-07-18 11:33 ` Richard Biener
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