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Re: [PATCH 0/9] [RFC] Expand SMS functionality
- From: Richard Sandiford <richard dot sandiford at linaro dot org>
- To: Roman Zhuykov <zhroma at ispras dot ru>
- Cc: gcc-patches at gcc dot gnu dot org, dm at ispras dot ru
- Date: Mon, 17 Oct 2011 15:02:16 +0100
- Subject: Re: [PATCH 0/9] [RFC] Expand SMS functionality
- References: <1311265834-2144-1-git-send-email-zhroma@ispras.ru> <CAJnFk2cpP-yDFnq3y+ZnquPaizfLzxF5Bjqna21a6R1+YDQTzA@mail.gmail.com>
Roman Zhuykov <zhroma@ispras.ru> writes:
> [PATCH 4/9] Move the SMS pass earlier
> http://gcc.gnu.org/ml/gcc-patches/2011-07/msg01811.html
I don't think this is a good idea. To get good results, SMS really
needs to run as close to the register allocator as possible, otherwise
later passes might disrupt the schedule.
Richard