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Re: cache misses in gcc 3.3
- From: Diego Novillo <dnovillo at redhat dot com>
- To: Andi Kleen <ak at muc dot de>
- Cc: Robert Dewar <dewar at gnat dot com>, gcc at gcc dot gnu dot org, mszick at goquest dot com
- Date: Mon, 10 Feb 2003 11:30:25 -0500
- Subject: Re: cache misses in gcc 3.3
- Organization: Red Hat Canada
- References: <20030210145645.9E371F290D@nile.gnat.com> <20030210161232.GA6500@averell>
On Mon, 10 Feb 2003, Andi Kleen wrote:
> Hopefully CSE can be fixed too - I assume tree-ssa will do that eventually?
>
Well, by having PRE and other cleanups at the tree level, the
hope is to go into GCSE and rip out all the code that tries to
deal with cases that can be more easily caught at the tree level.
We will always need to do CSE on RTL. The idea is to make it
faster by taking advantage of lots of simplifying assumptions.
Diego.