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Re: What happened to the IRA interprocedural reg-alloc work? (function_used_regs and friends)

From: Andi Kleen <andi at firstfloor dot org>
To: Vladimir Makarov <vmakarov at redhat dot com>
Cc: Steven Bosscher <stevenb dot gcc at gmail dot com>, GCC Mailing List <gcc at gcc dot gnu dot org>
Date: Tue, 16 Oct 2012 10:20:26 -0700
Subject: Re: What happened to the IRA interprocedural reg-alloc work? (function_used_regs and friends)
References: <CABu31nNqOc6re_jccLgADxsArU3epdwKm9NNLmt=C=nNkLp4gA@mail.gmail.com> <507CC8A0.1070707@redhat.com>

Vladimir Makarov <vmakarov@redhat.com> writes:
>>
> As I remember, the performance improvement from this optimization was
> very small.  There were problems in reviewing IRA and I decided to
> simplify this task.
>
> May be it is worth to return to this work.

... especially if you could make it work with LTO.

-Andi

Follow-Ups:
- Re: What happened to the IRA interprocedural reg-alloc work? (function_used_regs and friends)
  - From: Steven Bosscher

References:
- What happened to the IRA interprocedural reg-alloc work? (function_used_regs and friends)
  - From: Steven Bosscher
- Re: What happened to the IRA interprocedural reg-alloc work? (function_used_regs and friends)
  - From: Vladimir Makarov

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