From: marxin <mliska@suse.cz>
To: gcc-patches@gcc.gnu.org
Cc: amker.cheng@gmail.com
Subject: [PATCH 0/3] IVOPTS: support profiling
Date: Fri, 29 Apr 2016 11:58:00 -0000 [thread overview]
Message-ID: <cover.1461931011.git.mliska@suse.cz> (raw)
Hello.
As profile-guided optimization can provide very useful information
about basic block frequencies within a loop, following patch set leverages
that information. It speeds up a single benchmark from upcoming SPECv6
suite by 20% (-O2 -profile-generate/-fprofile use) and I think it can
also improve others (currently measuring numbers for PGO).
Idea is quite simple, where each cost (belonging to a BB) is
multiplied by (bb_frequency / header_frequency), which suppress IV uses
in basic blocks with a low frequency.
The patch set can bootstrap on ppc64le-linux-gnu (and also
x86_64-linux-gnu) and no new regression is introduced.
Ready for trunk?
Thanks,
Martin
marxin (3):
Encapsulate comp_cost within a class with methods.
Add profiling support for IVOPTS
Enhance dumps of IVOPTS
gcc/testsuite/g++.dg/tree-ssa/ivopts-3.C | 2 +-
gcc/tree-ssa-loop-ivopts.c | 690 ++++++++++++++++++++++---------
2 files changed, 491 insertions(+), 201 deletions(-)
--
2.8.1
next reply other threads:[~2016-04-29 11:58 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-29 11:58 marxin [this message]
2016-04-29 11:58 ` [PATCH 3/3] Enhance dumps of IVOPTS marxin
2016-05-06 9:19 ` Martin Liška
2016-05-09 9:47 ` Richard Biener
2016-05-10 13:16 ` Bin.Cheng
2016-05-11 14:18 ` Martin Liška
2016-05-12 12:14 ` Martin Liška
2016-05-12 13:51 ` Bin.Cheng
2016-05-12 16:42 ` Martin Liška
2016-05-13 9:43 ` Bin.Cheng
2016-05-13 10:44 ` Martin Liška
2016-05-13 12:12 ` H.J. Lu
2016-05-13 12:39 ` Martin Liška
2016-05-13 12:44 ` Kyrill Tkachov
2016-05-13 12:47 ` Richard Biener
2016-05-13 12:51 ` Martin Liška
2016-05-13 14:17 ` H.J. Lu
2016-05-13 14:46 ` H.J. Lu
2016-04-29 11:58 ` [PATCH 1/3] Encapsulate comp_cost within a class with methods marxin
2016-05-16 10:14 ` Bin.Cheng
2016-05-16 13:55 ` Martin Liška
2016-05-19 10:23 ` Martin Liška
2016-05-19 11:24 ` Bin.Cheng
2016-05-26 21:02 ` Martin Liška
2016-04-29 11:58 ` [PATCH 2/3] Add profiling support for IVOPTS marxin
2016-05-16 13:56 ` Martin Liška
2016-05-16 22:27 ` Bin.Cheng
2016-05-19 10:28 ` Martin Liška
2016-05-20 10:04 ` Bin.Cheng
2016-05-24 10:19 ` Bin.Cheng
2016-05-24 10:33 ` Bin.Cheng
2016-05-24 11:01 ` Bin.Cheng
2016-05-30 19:51 ` Martin Liška
2016-05-03 9:28 ` [PATCH 0/3] IVOPTS: support profiling Bin.Cheng
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