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Re: RFA: patch for register pressure sensitive insn scheduling

From: Vladimir Makarov <vmakarov at redhat dot com>
To: David Edelsohn <dje dot gcc at gmail dot com>
Cc: gcc-patches <gcc-patches at gcc dot gnu dot org>
Date: Tue, 01 Sep 2009 10:32:40 -0400
Subject: Re: RFA: patch for register pressure sensitive insn scheduling
References: <303e1d290909010722s5bd2aa5ey42188a9e51d57ff0@mail.gmail.com>

David Edelsohn wrote:

Vlad,

Thanks for investigating and addressing this issue in GCC.
Did you test on POWER6 with the rs6000.c:rs6000_issue_rate()
restriction for the first scheduling pass removed?

I used the same issue rate (1 for the 1st insn scheduling) as it is defined currently in the trunk.

I remembered the discussion about this restriction a few weeks ago. I should try to check SPEC without the restriction.

So I'll do it and post the results (probably tomorrow).

Follow-Ups:
- Re: RFA: patch for register pressure sensitive insn scheduling
  - From: Vladimir Makarov

References:
- Re: RFA: patch for register pressure sensitive insn scheduling
  - From: David Edelsohn

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