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

From: Pat Haugen <pthaugen at us dot ibm dot com>
To: David Edelsohn <dje at watson dot ibm dot com>
Cc: gcc-patches at gcc dot gnu dot org
Date: Tue, 22 Apr 2008 11:24:09 -0500
Subject: Re: [PATCH rs6000] Increase register move cost for LR/CTR

David Edelsohn <dje@watson.ibm.com> wrote on 04/19/2008 11:10:45 AM:
>
>    Given the limited benefit to POWER4/5, let's start by making the
> change just for POWER6 and enable it for targets as appropriate.
>

Below is the updated patch, bootstrapped/regtested on powerpc64-linux.
OK for trunk?


2008-04-22  Pat Haugen  <pthaugen@us.ibm.com>

      * config/rs6000/rs6000.c (rs6000_register_move_cost): Increase cost
      of LR/CTR moves for Power6.

(See attached file: reg_cost.diff)

Attachment: reg_cost.diff
Description: Binary data

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