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Re: Performance regression
- From: Jim Wilson <wilson at redhat dot com>
- To: Roger Sayle <roger at eyesopen dot com>
- Cc: Dale Johannesen <dalej at apple dot com>, <gcc at gcc dot gnu dot org>, <gcc-patches at gcc dot gnu dot org>
- Date: 25 Sep 2002 13:21:25 -0400
- Subject: Re: Performance regression
- References: <Pine.LNX.4.33.0209250938010.10971-100000@www.eyesopen.com>
>Just to be clear, which new optimizations did you have in mind?
I don't have any specific optimizations in mind, I just know that we will
need new optimizations to replace what we lost when LOAD_EXTEND_OP semantics
changed. Actually, we may want to eliminate LOAD_EXTEND_OP someday, since
if we had explicit optimization support for sign/zero-extend operators, then
we wouldn't need most of what LOAD_EXTEND_OP does.
Jim