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Re: LNO Branch merge proposal
On Wed, 2004-03-17 at 16:32, David Edelsohn wrote:
> High-level loop optimizations and auto-vectorization are not
> enabled by default in most compilers. We are trying to improve GCC
> performance on benchmarks, but we are not trying to transform GCC into a
> benchmark compiler when invoked under normal operating conditions.
>
The basic loop stuff we do at -O2 should trigger by default. That will
exercise the basic framework.
> What technology previews in GCC with long-term commitments of
> support for developers have been abandoned?
>
-fssa has been abandoned. -fnew-ra is limping along.
> Many GCC developers have been looking for increased contribution
> of technology to GCC. It would be a shame to discourage those efforts and
> pass up an opportunity.
>
Don't be so melodramatic. Tree SSA thrived inside a branch and nobody
felt discouraged because of it. On the contrary.
I am not opposed to merging LNO. Get that straight. I just want to
make sure we don't trip over in our haste to bring everything together.
Doing it in stages like Richard suggested seems to me like a good idea.
Diego.