llvm dev - Jun 2019 - Collecting some feedback on forward the scheduling state across machine basic block.

<font face="Verdana,Arial,Helvetica,sans-serif"
size="2"><div>Hi, all,<br style="box-sizing:
inherit;"><br style="box-sizing: inherit;">I am trying
to do some improvement to forward the scheduling state between MBB for MI
scheduler. It is based on the idea that, if MBB2 has single pred MBB1, then, the
MBB1's scheduling state is valid to MBB2. I have posted all the needed
patches for months. I really need your input. Thank you!<br
style="box-sizing: inherit;"><br style="box-sizing:
inherit;"><a href="https://reviews.llvm.org/D61248"
class="remarkup-link" target="_blank"
rel="noreferrer" style="box-sizing: inherit;
text-decoration-line: none; cursor: pointer; font-size: 13px; font-family:
"Segoe UI", "Segoe UI Emoji", "Segoe UI Symbol",
Lato, "Helvetica Neue", Helvetica, Arial,
sans-serif;"><font color="#136cb2" style="box-sizing:
inherit;">https://reviews.llvm.org/D61248</font></a><span
style="box-sizing: inherit; font-size: 13px; font-family: "Segoe
UI", "Segoe UI Emoji", "Segoe UI Symbol", Lato,
"Helvetica Neue", Helvetica, Arial, sans-serif;"> is the 1st
patch to allow the schedule strategy to forward the schedule state between
MBB.</span><br style="box-sizing: inherit; font-size: 13px;
font-family: "Segoe UI", "Segoe UI Emoji", "Segoe UI
Symbol", Lato, "Helvetica Neue", Helvetica, Arial,
sans-serif;"><a href="https://reviews.llvm.org/D61249"
class="remarkup-link" target="_blank"
rel="noreferrer" style="box-sizing: inherit;
text-decoration-line: none; cursor: pointer; font-size: 13px; font-family:
"Segoe UI", "Segoe UI Emoji", "Segoe UI Symbol",
Lato, "Helvetica Neue", Helvetica, Arial,
sans-serif;"><font color="#136cb2" style="box-sizing:
inherit;">https://reviews.llvm.org/D61249</font></a><span
style="box-sizing: inherit; font-size: 13px; font-family: "Segoe
UI", "Segoe UI Emoji", "Segoe UI Symbol", Lato,
"Helvetica Neue", Helvetica, Arial, sans-serif;"> is the 2nd
patch to update the schedule strategy for SystemZ target to adapt with 1st
patch.</span><br style="box-sizing: inherit; font-size: 13px;
font-family: "Segoe UI", "Segoe UI Emoji", "Segoe UI
Symbol", Lato, "Helvetica Neue", Helvetica, Arial,
sans-serif;"><a href="https://reviews.llvm.org/D59480"
class="remarkup-link" target="_blank"
rel="noreferrer" style="box-sizing: inherit;
text-decoration-line: none; cursor: pointer; font-size: 13px; font-family:
"Segoe UI", "Segoe UI Emoji", "Segoe UI Symbol",
Lato, "Helvetica Neue", Helvetica, Arial,
sans-serif;"><font color="#136cb2" style="box-sizing:
inherit;">https://reviews.llvm.org/D59480</font></a><span
style="box-sizing: inherit; font-size: 13px; font-family: "Segoe
UI", "Segoe UI Emoji", "Segoe UI Symbol", Lato,
"Helvetica Neue", Helvetica, Arial, sans-serif;"> is the 3rd
patch to add the scheduled state data structure, so that, it could be kept
somewhere.</span><br style="box-sizing: inherit; font-size: 13px;
font-family: "Segoe UI", "Segoe UI Emoji", "Segoe UI
Symbol", Lato, "Helvetica Neue", Helvetica, Arial,
sans-serif;"><a href="https://reviews.llvm.org/D61250"
class="remarkup-link" target="_blank"
rel="noreferrer" style="box-sizing: inherit;
text-decoration-line: none; cursor: pointer; font-size: 13px; font-family:
"Segoe UI", "Segoe UI Emoji", "Segoe UI Symbol",
Lato, "Helvetica Neue", Helvetica, Arial,
sans-serif;"><font color="#136cb2" style="box-sizing:
inherit;">https://reviews.llvm.org/D61250</font></a><span
style="box-sizing: inherit; font-size: 13px; font-family: "Segoe
UI", "Segoe UI Emoji", "Segoe UI Symbol", Lato,
"Helvetica Neue", Helvetica, Arial, sans-serif;"> is the last
patch to forward the scheduled state 3rd patch added for PostGenericScheduler
and enable it for PowerPC
target.<br><br></span></div></font><BR>

On Tue, 11 Jun 2019 at 10:21, Qing Shan Zhang via llvm-dev
<llvm-dev at lists.llvm.org> wrote:
>
> Hi, all,
>
> I am trying to do some improvement to forward the scheduling state between
MBB for MI scheduler. It is based on the idea that, if MBB2 has single pred
MBB1, then, the MBB1's scheduling state is valid to MBB2. I have posted all
the needed patches for months. I really need your input. Thank you!
>
> https://reviews.llvm.org/D61248 is the 1st patch to allow the schedule
strategy to forward the schedule state between MBB.
> https://reviews.llvm.org/D61249 is the 2nd patch to update the schedule
strategy for SystemZ target to adapt with 1st patch.
> https://reviews.llvm.org/D59480 is the 3rd patch to add the scheduled state
data structure, so that, it could be kept somewhere.
> https://reviews.llvm.org/D61250 is the last patch to forward the scheduled
state 3rd patch added for PostGenericScheduler and enable it for PowerPC target.
Hi! I wanted to link this from tomorrow's LLVM Weekly, but your email
was sent HTML-only and doesn't appear up in a readable form in the
mailing list archives
(http://lists.llvm.org/pipermail/llvm-dev/2019-June/132953.html).
Responding with your email quoted so there's a plain-text form I can
link to.

Please look at configuring your email client to send plain text for
the llvm-dev list.

Best,

Alex

Hi, 

Sorry about that. I have updated my mail client configuration to sent it both
HTML and plain text. This is the content of my last mail. Thank you!

"Hi, all,

I am trying to do some improvement to forward the scheduling state between MBB
for MI scheduler. It is based on the idea that, if MBB2 has single pred MBB1,
then, the MBB1's scheduling state is valid to MBB2. I have posted all the
needed patches for months. I really need your input. Thank you!

https://reviews.llvm.org/D61248 is the 1st patch to allow the schedule strategy
to forward the schedule state between MBB.
https://reviews.llvm.org/D61249 is the 2nd patch to update the schedule strategy
for SystemZ target to adapt with 1st patch.
https://reviews.llvm.org/D59480 is the 3rd patch to add the scheduled state data
structure, so that, it could be kept somewhere.
https://reviews.llvm.org/D61250 is the last patch to forward the scheduled state
3rd patch added for PostGenericScheduler and enable it for PowerPC target."


-----Alex Bradbury <asb at asbradbury.org> wrote: -----
To: Qing Shan Zhang <qshanz at cn.ibm.com>
From: Alex Bradbury <asb at asbradbury.org>
Date: 06/16/2019 10:54PM
Cc: llvm-dev <llvm-dev at lists.llvm.org>, flo at fhahn.com
Subject: [EXTERNAL] Re: [llvm-dev] Collecting some feedback on forward the
scheduling state across machine basic block.

On Tue, 11 Jun 2019 at 10:21, Qing Shan Zhang via llvm-dev
<llvm-dev at lists.llvm.org> wrote:
>
> Hi, all,
>
> I am trying to do some improvement to forward the scheduling state between
MBB for MI scheduler. It is based on the idea that, if MBB2 has single pred
MBB1, then, the MBB1's scheduling state is valid to MBB2. I have posted all
the needed patches for months. I really need your input. Thank you!
>
>
https://urldefense.proofpoint.com/v2/url?u=https-3A__reviews.llvm.org_D61248&d=DwIFaQ&c=jf_iaSHvJObTbx-siA1ZOg&r=4FedcNQfP4QcaBGfhp8oq2wPQHIv51RNpo7UEhopmZc&m=5lWEHS9vJLwK19WJPkjXRoGuGpw1_SXfBa9DclxtPS8&s=bXmgxmC6thWfYEh5-tKrKUSEWzQyzMM-0F9d30yIJP8&e=
is the 1st patch to allow the schedule strategy to forward the schedule state
between MBB.
>
https://urldefense.proofpoint.com/v2/url?u=https-3A__reviews.llvm.org_D61249&d=DwIFaQ&c=jf_iaSHvJObTbx-siA1ZOg&r=4FedcNQfP4QcaBGfhp8oq2wPQHIv51RNpo7UEhopmZc&m=5lWEHS9vJLwK19WJPkjXRoGuGpw1_SXfBa9DclxtPS8&s=hTJT6h6jpHiir7wnJHTXLMgySsN1jTSM4WxoILpAgx4&e=
is the 2nd patch to update the schedule strategy for SystemZ target to adapt
with 1st patch.
>
https://urldefense.proofpoint.com/v2/url?u=https-3A__reviews.llvm.org_D59480&d=DwIFaQ&c=jf_iaSHvJObTbx-siA1ZOg&r=4FedcNQfP4QcaBGfhp8oq2wPQHIv51RNpo7UEhopmZc&m=5lWEHS9vJLwK19WJPkjXRoGuGpw1_SXfBa9DclxtPS8&s=ElVYPA07HK8vpeeNR0pW4MHFydiKi5rZ2Qq4i_IuO10&e=
is the 3rd patch to add the scheduled state data structure, so that, it could be
kept somewhere.
>
https://urldefense.proofpoint.com/v2/url?u=https-3A__reviews.llvm.org_D61250&d=DwIFaQ&c=jf_iaSHvJObTbx-siA1ZOg&r=4FedcNQfP4QcaBGfhp8oq2wPQHIv51RNpo7UEhopmZc&m=5lWEHS9vJLwK19WJPkjXRoGuGpw1_SXfBa9DclxtPS8&s=ObgPCxnb1MH3qf3kuFzC7CTGAWDGBxy9D8aVOgDepC0&e=
is the last patch to forward the scheduled state 3rd patch added for
PostGenericScheduler and enable it for PowerPC target.
Hi! I wanted to link this from tomorrow's LLVM Weekly, but your email
was sent HTML-only and doesn't appear up in a readable form in the
mailing list archives
(https://urldefense.proofpoint.com/v2/url?u=http-3A__lists.llvm.org_pipermail_llvm-2Ddev_2019-2DJune_132953.html&d=DwIFaQ&c=jf_iaSHvJObTbx-siA1ZOg&r=4FedcNQfP4QcaBGfhp8oq2wPQHIv51RNpo7UEhopmZc&m=5lWEHS9vJLwK19WJPkjXRoGuGpw1_SXfBa9DclxtPS8&s=MQddJ4jeLo5a9mEo70aQwR9vuPsTzUeFVOnDjQmv0fo&e=
).
Responding with your email quoted so there's a plain-text form I can
link to.

Please look at configuring your email client to send plain text for
the llvm-dev list.

Best,

Alex



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