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Re: RFA: DSE replace_read revisited


Paolo Bonzini <bonzini@gnu.org> writes:
>> The TCP increase is 3 instructions rather than 1 because of a missed
>> SIGN_EXTEND optimisation in simplify-rtx.c.  I have a separate patch
>> for that, but I'm not convinced it's stage 3 material.
>
> It might be worth submitting anyway, since it is in some sense a regression.

Yeah, I suppose it is.  You might have seen it by now, but I ended up
posting it for comments:

    http://gcc.gnu.org/ml/gcc-patches/2007-10/msg01667.html

Do you think it's OK, and safe enough under the circumstances?

Richard


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