This is the mail archive of the gcc-patches@gcc.gnu.org mailing list for the GCC project.

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]
Other format:	[Raw text]

[PATCH] Add statistical printout of rank_for_schedule decisions

From: Maxim Kuvyrkov <maxim dot kuvyrkov at linaro dot org>
To: GCC Patches <gcc-patches at gcc dot gnu dot org>
Cc: Vladimir Makarov <vmakarov at redhat dot com>, Jeff Law <law at redhat dot com>
Date: Mon, 14 Jul 2014 16:17:48 +1200
Subject: [PATCH] Add statistical printout of rank_for_schedule decisions
Authentication-results: sourceware.org; auth=none

Hi,

This patch adds dump printouts for scheduling heuristics in rank_for_schedule.  Rank_for_schedule is one of the cornerstones of haifa scheduler, yet its decisions are hard to track and debug.

This patch adds statistical gathering for each branch of rank_for_schedule, and prints them out according to sched verbosity.  This patch helped me track down several bugs in rank_for_schedule that result is stupid scheduling decisions.

Bootstrapped and tested on x86_64-linux-gnu.

OK to apply?

Thank you,

--
Maxim Kuvyrkov
www.linaro.org

Attachment: 0002-Add-statistical-printout-of-rank_for_schedule-decisi.patch
Description: Binary data

Follow-Ups:
- Re: [PATCH] Add statistical printout of rank_for_schedule decisions
  - From: Jeff Law

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]