On 21.03.2018 13:31, Martin Liška wrote:
> On 03/21/2018 11:17 AM, Andrey Belevantsev wrote:
>> Hi Martin,
>>
>> On 21.03.2018 12:48, Martin Liška wrote:
>>> Hello.
>>>
>>> I noticed there are quite many selective scheduling PRs:
>>> htt
Hi Martin,
On 21.03.2018 12:48, Martin Liška wrote:
> Hello.
>
> I noticed there are quite many selective scheduling PRs:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84872
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84842
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84659
>
> and many ot
On 14.01.2016 20:26, Jeff Law wrote:
On 01/14/2016 12:07 AM, Andrey Belevantsev wrote:
Hello Bernd,
On 13.01.2016 21:25, Bernd Schmidt wrote:
There are a few open PRs involving sel-sched, and I'd like to start a
discussion about removing it. Having two separate schedulers isn't a
Hello Bernd,
On 13.01.2016 21:25, Bernd Schmidt wrote:
There are a few open PRs involving sel-sched, and I'd like to start a
discussion about removing it. Having two separate schedulers isn't a very
good idea in the first place IMO, and since ia64 is dead, sel-sched gets
practically no testing d
On 30.06.2014 7:22, Hebenstreit, Michael wrote:
I tested from home to reach https://gcc.gnu.org/pub/gcc/infrastructure/ - same
result; ftp://gcc.gnu.org/pub/gcc/infrastructure/ works though. Trying ftp from
behind the company FW on FF redirects me to the htpps, though on IE it works
There was
On 07.10.2013 9:54, Jeff Hammond wrote:
Given your company (Oracle) sued Google over 9 lines of Java (the now
infamous rangeCheck function), I hardly think it's appropriate for you
to discourage someone from following through with copyright assignment
for a minor contribution.
This has nothing
On 15.04.2013 20:21, Tobias Burnus wrote:
Ghassan Shobaki wrote:
We are currently working on a research
project on instruction scheduling for low power (experimenting with
different algorithms for minimizing switching power) and would like to
find out if GCC already has such a scheduler and how
Hi Kartik,
On Sun, 10 Feb 2013 15:41:17 +0530, Kartik Singhal
wrote:
Thanks Richard for pointing out tree-ssa-sccvn.c
On Wed, Feb 6, 2013 at 8:14 PM, Richard Biener
wrote:
Well, to ignore SSA form simply treat each SSA name as separate
variable.
You of course need to handle PHI nodes as
cc.gnu.org/ml/gcc-patches/2011-08/msg02428.html.
Andrey
Alex
--- On Thu, 7/19/12, Andrey Belevantsev wrote:
From: Andrey Belevantsev Subject: Re: SMS issues To:
"Alex Turjan" Cc: gcc@gcc.gnu.org,
ayal.z...@gmail.com, revital.e...@linaro.org, "Roman Zhuikov"
Date: Thu
Hello Alex,
On 18.07.2012 18:40, Alex Turjan wrote:
Im writing to you with respect to some strange SMS functionality.
In the code bellow there are 2 instructions (a builtin store and a builtin load)
as they appear in the program flow before SMS:
...
Issues:
1. What is the reason why (T
On 05.04.2012 16:33, Robert Dewar wrote:
On 4/5/2012 8:28 AM, Michael Veksler wrote:
It is not that they can't remember. I am a TA at a moderately basic
programming course,
and student submit home assignments with horrible errors. These errors,
such as
free(*str) or *str=malloc(n) are easily be
Hello,
On 14.11.2010 0:08, Xinliang David Li wrote:
I re-measured the performance difference using trunk gcc and trunk
clang/llvm on a core-2 box. -fno-strict-aliasing is added to gcc
because clang/llvm's type based aliasing is not incomplete and not
enabled by default. I also added -fomit-fram
Hi,
On 10.11.2010 12:32, roy rosen wrote:
Hi,
I was wondering if gcc has software pipelining.
I saw options -fsel-sched-pipelining -fselective-scheduling
-fselective-scheduling2 but I don't see any pipelining happening
(tried with ia64).
Is there a gcc VLIW port in which I can see it working?
Y
On 19.10.2010 17:57, Jie Zhang wrote:
Removing the failing assert fixes the test case. But I wonder why not just
get max_issue correct. I'm testing the attached patch. IMHO, max_issue
looks confusing.
* The concept of ISSUE POINT has never been used since the code landed in
repository.
* In the
On 18.10.2010 11:31, Jie Zhang wrote:
Hi Andrey,
On 10/18/2010 03:13 PM, Andrey Belevantsev wrote:
Hi Jie,
On 18.10.2010 10:49, Jie Zhang wrote:
When this error happens, FENCE_ISSUED_INSNS (fence) is 2 and
issue_rate is
1. PowerPC 8540 is capable to issue 2 instructions in one cycle, but
Hi Jie,
On 18.10.2010 10:49, Jie Zhang wrote:
When this error happens, FENCE_ISSUED_INSNS (fence) is 2 and issue_rate is
1. PowerPC 8540 is capable to issue 2 instructions in one cycle, but
rs6000_issue_rate lies to scheduler that it can only issue 1 instruction
before register relocation is do
Hi Markus,
Markus L wrote:
Thank you very much for your detailed response!
I suspect your machine description says that dependency between loads and
multiply-add has zero latency, thus allowing the scheduler to place them
into
one instruction group. Grep for various comments about tick_check_
Vladimir Makarov wrote:
Steven Bosscher wrote:
On Wed, Apr 8, 2009 at 5:19 AM, Vladimir Makarov
wrote:
I've been working on register-pressure sensitive insn scheduling last
two
months and I hope to submit this work for gcc4.5. I am implementing
also a
mode in insn-scheduler to do only live
Hello,
We at ISP RAS have plans to work in the near future on generating either
CUDA source or PTX from C programs (probably with simple OpenMP
directives). Of course, we would benefit from the OpenCL infrastructure
in GCC if one was available.
Mark Mitchell wrote:
We (CodeSourcery) have
Bingfeng Mei wrote:
I found the the GsoC project and patch here (only 2007)
http://code.google.com/soc/2007/gcc/appinfo.html?csaid=E0FEBB869A5F65A8
Is this patch only for propagating data dependency or does it include
propagating alias info as well?
The patch at http://gcc.gnu.org/ml/gcc/2007-1
Diego Novillo wrote:
On Sun, Nov 9, 2008 at 06:38, Steven Bosscher <[EMAIL PROTECTED]> wrote:
Wasn't there a GSoC project for this last year? And this year?
It'd be interesting to hear if anything came out of that...
Nothing came of that, unfortunately.
There are two patches, actually. The
bootstrap finishes. Sorry
for the breakage.
Andrey
2008-09-01 Andrey Belevantsev <[EMAIL PROTECTED]>
* sel-sched-ir.c (cmp_v_in_regset_pool): Surround with
#ifdef ENABLE_CHECKING.
Index: gcc/sel-sched-ir.c
===
Zdenek Dvorak wrote:
I am probably missing something:
The basic idea is enabling cfglayout mode and then ensuring that insn
stream and control flow are in sync with each other at all times. This
is required because e.g. on Itanium the final bundling happens right
after scheduling, and any extra
Hello,
Currently, the selective scheduler pass uses cfgrtl mode. This results
in creating extra jumps and basic blocks while changing control flow,
especially when redirecting edges. When this happens, we need to
initialize scheduler's data structures. To do this, we have implemented
contr
Gerald Pfeifer wrote:
Any chance you could make a pass through that page and remove those
items that you know have already been done, or separate those that
are still open and those that have been done into two different
sections?
Sure, I would make a note to do this somewhere during stage2.
Hello,
Tadas V wrote:
I am a computer science student and currently I am preparing my master
degree final work on "Compiler optimization on IA64 platforms". So
could you provide some information to me what is the the current
situation with gcc and IA64 platfrom - I mean what are open
optimizatio
吴曦 wrote:
Hi:
I am working on gcc-4.3.0 and Redhat ES 4. When I uses the compiler to
build specint-2006 benchmarks,
none passes the make with compiler option: -msched-control-spec
(enable control speculation on IA-64)
Control speculation is disabled by default on IA-64, so I think one of
the sc
Hello,
As GCC 4.3 is almost out of the door, I thought it possible to ask
whether there will be a release plan for GCC 4.4 similar to the ones for
previous releases. The reason I'm asking is that myself and my
colleagues are working on preparing the selective scheduler branch for
inclusion i
Vincent Lefevre wrote:
It's surprising that you don't mention svk, which is based on top
of Subversion[*]. Has anyone tried? Is there any problem with it?
I must agree with Ismail's reply here. We have used svk for our
internal development for about two years, for the reason of easy
mirroring
Hello,
Kumar Rangarajan wrote:
I am interested in understanding the limitations/optimization
opportunities of the IA64 version of gcc. I read from the projects list
on the gcc site about the proposed optimizations for the IA64 platform,
I see that some of the requests were from 2001 or so time
Hello,
I would like to use some sort of hashing to speed up searching for an
insn in an availability set in the selective scheduler. It seems
natural using hash_rtx for this purpose. However, hash_rtx will not
hash any volatile subexpressions, returning 0 in this case. This is
fine by me,
Prasad, Kamal R wrote:
Hello,
Can someone tell me the back-end optimizations available for itanium
(IA64)?
We (HP) may be able to contribute to this from our side.
To add to the summary Vlad already did, you may want to take a look at
the notes from the last meeting of the Gelato GCC Itanium g
Rafael Espindola wrote:
Is anyone using svk? I tried to create a local depot by updating the
one pointed on the wiki. Unfortunately it is trying to use too much
ram and crashing.
Yes, we keep a local mirror of trunk and sel-sched branch using svk. As
far as I remember, I did the setup from scr
Vladimir N. Makarov wrote:
Good aliasing is very important for the scheduler. But I'd look at this
more wider. We need a good aliasing for many RTL optimizations. What's
happened to ISP RAS aliasing patch propagating SSA info to RTL? Why is
it stalled?
We'll plan to work on it further in th
Steven Bosscher wrote:
> I don't understand this. You're saying there is a fallthrough edge
> from your e->src to EXIT_BLOCK. This case is explicitly allowed by
> the checking code. It is an exception from the rule: For a fallthrough
> edge to EXIT, e->src->next_bb != e->dest is OK.
Thanks! It'
Steven Bosscher wrote:
No. The condition you're checking is simply not true in cfglayout
mode. The whole point of cfglayout mode is to get rid of the
requirement that basic blocks are serial. That means a fallthru edge
in cfglayout mode doesn't have to go to next_bb. It can go to *any*
bb.
Yes, b
Hello,
During my work on the selective scheduler I have triggered an assert in
our code saying that a fall-through edge should have e->src->next_bb ==
e->dest. This was for a bb with EXIT_BLOCK as its fall-through
successor, but its next_bb pointing to another block.
I was wondering why veri
Canqun Yang wrote:
Hi, all
This patch results a performance increase of 4% for SPECfp2000 and 13% for NAS
benchmark suite on
Itanium-2 system, respectively. More performance increase is hopeful by further
tuning the
parameters and improving the prefetch algorithm at tree level.
Hi Canqun,
Hi Daniel,
I can't find the testcase attached to any message of the thread. Could
it be because of the message size? If so, please send the testcase both
to me and Maxim, one of us will look into it.
Thanks, Andrey
Hi,
When bootstrapping rev. 109012 on ia64-linux (checked out around 9am GMT
today), I get
make[3]: Entering directory `/mnt/sda5/bonzo/obj-trunk/stage2-libdecnumber'
source='../../trunk/libdecnumber/decNumber.c' object='decNumber.o'
libtool=no /home/bonzo/local/obj-trunk/./prev-gcc/xgcc
-B/
Christian Joensson wrote:
So, I just wonder what's going wrong here...
Could it be the problem explained in
http://gcc.gnu.org/ml/gcc-patches/2005-09/msg00872.html? The patch is
available later in that thread:
http://gcc.gnu.org/ml/gcc-patches/2005-09/msg00879.html
Andrey
Summit 2005.
Personnel
Maxim Kuvyrkov, Andrey Belevantsev (Institute for System Programming,
Russian Academy of Sciences)
Delivery Date
This project will be ready during the first stage of GCC 4.2.
Benefits
The patch improves SPEC FP on 2% (with -O2, as of May 2005). Aggressive
inlining an
Steven Bosscher wrote:
Hmm, I've never seen any discussions about this on [EMAIL PROTECTED] Could you
give some links to messages in the mailing list archives that you
may have found?
I've seen only the thread mentioning the work of Ritu Sabharwal
(http://gcc.gnu.org/ml/gcc/2002-12/msg00508.h
Vladimir Makarov wrote:
I'll look at this PR today.
We've looked today at this issue. We think the problem is that proposed
patch of sched_get_condition() treats conditional jumps likely to
COND_EXECs, but it doesn't fix other places in sched-deps, where
COND_EXECs are considered. Maxim Kuvy
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