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Re: GCSE store motion
- From: Daniel Berlin <dberlin at dberlin dot org>
- To: Robert Dewar <dewar at gnat dot com>
- Cc: mark at codesourcery dot com, <roger at eyesopen dot com>, <aj at suse dot de>,<davem at redhat dot com>, <gcc at gcc dot gnu dot org>, <rth at redhat dot com>
- Date: Thu, 16 May 2002 11:05:08 -0400 (EDT)
- Subject: Re: GCSE store motion
On Thu, 16 May 2002, Robert Dewar wrote:
> > That means we shouldn't be spending much time trying to do software
> > loop pipelining when compiling GCC, so the optimization shouldn't
> > make compiling the compiler significantly slower.
> I don't see how you conclude this. You have to do the analysis on every
Intel's compiler immediately discounts loops with calls in them.
> There will definitely be loops in GCC where the optimization is
> possible, there will be loops where it is not. I would expect the
> compiler to spend quite a bit of time trying to improve code for
> loops in GCC. What I am saying is that I doubt that the overall
> effect will be that benficial for GCC.