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Re: IRA conflict graph & alternative selection

From: Jeff Law <law at redhat dot com>
To: Vladimir Makarov <vmakarov at redhat dot com>
Cc: Ian Lance Taylor <iant at google dot com>, Paolo Bonzini <bonzini at gnu dot org>, GCC Development <gcc at gcc dot gnu dot org>, Michael Matz <matz at suse dot de>
Date: Tue, 17 Feb 2009 10:45:46 -0700
Subject: Re: IRA conflict graph & alternative selection
References: <49958DCA.5000300@redhat.com> <4995A21B.8080103@redhat.com> <4995A395.2020201@gnu.org> <m33aei2mc9.fsf@google.com> <49999329.1000101@redhat.com> <m3r61yyvdu.fsf@google.com> <4999F345.8070705@redhat.com> <499AE5A9.2060702@redhat.com>

Vladimir Makarov wrote:

IMHO, another important optimization what reload does for such processors is usage of already calculated displacement whose value is in hard register to calculate an new displacement (that was implemented by Joern for SH).

ISTM this optimization could be done with a pre-variant rather than the ad-hoc implementation we have now.

Jeff

References:
- IRA conflict graph & alternative selection
  - From: Jeff Law
- Re: IRA conflict graph & alternative selection
  - From: Vladimir Makarov
- Re: IRA conflict graph & alternative selection
  - From: Paolo Bonzini
- Re: IRA conflict graph & alternative selection
  - From: Ian Lance Taylor
- Re: IRA conflict graph & alternative selection
  - From: Jeff Law
- Re: IRA conflict graph & alternative selection
  - From: Ian Lance Taylor
- Re: IRA conflict graph & alternative selection
  - From: Jeff Law
- Re: IRA conflict graph & alternative selection
  - From: Vladimir Makarov

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