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Re: [tree-ssa] Speed up tree-ssa-ccp
- From: Diego Novillo <dnovillo at redhat dot com>
- To: Jeff Law <law at redhat dot com>
- Cc: "gcc-patches at gcc dot gnu dot org" <gcc-patches at gcc dot gnu dot org>
- Date: 16 Jun 2003 11:06:58 -0400
- Subject: Re: [tree-ssa] Speed up tree-ssa-ccp
- Organization: Red Hat Canada
- References: <200306150719.h5F7JQfO006432@speedy.slc.redhat.com>
On Sun, 2003-06-15 at 03:19, law@redhat.com wrote:
> One of Gerald's testcases exposed that CCP can do a lot of unnecessary
> in some cases.
>
Cool. I was working along similar lines, but also included regular
statements in the check. I'm testing a patch that marks statements so
that we don't visit them again if their value has been proven VARYING or
if they are just not interesting for CCP (i.e., they produce no value).
The patch covers the check that you made here. Would you mind if I
changed this test slightly?
Thanks. Diego.