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Re: [PATCH rs6000] Increase register move cost for LR/CTR

From: David Edelsohn <dje at watson dot ibm dot com>
To: Pat Haugen <pthaugen at us dot ibm dot com>
Cc: gcc-patches at gcc dot gnu dot org
Date: Sat, 19 Apr 2008 17:10:45 +0100
Subject: Re: [PATCH rs6000] Increase register move cost for LR/CTR
References: <OF27AD3C07.FA229959-ON8625742D.0054FE50-8625742D.00566D08@us.ibm.com>

>>>>> Pat Haugen writes:

Pat> Given Andrew's Cell concern with
Pat> this patch, would it be preferable to make the change cpu specific
Pat> (starting with just Power6 for now since that's where the bigger latencies
Pat> came in to play)?

	Given the limited benefit to POWER4/5, let's start by making the
change just for POWER6 and enable it for targets as appropriate.

Thanks, David

Follow-Ups:
- Re: [PATCH rs6000] Increase register move cost for LR/CTR
  - From: Pat Haugen

References:
- Re: [PATCH rs6000] Increase register move cost for LR/CTR
  - From: Pat Haugen

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