ptx preliminary rtl patches [3/4]

Steven Bosscher
Thu Sep 11 15:56:00 GMT 2014

On Thu, Sep 11, 2014 at 3:26 PM, Bernd Schmidt wrote:
> nvptx will be the first port to use BImode and have STORE_FLAG_VALUE==-1.
> That has exposed a bug in combine where we can end up calling
> num_sign_bit_copies for a BImode value. However, the return value is always
> 1 in that case, so it doesn't tell us anything and is going to be
> misinterpreted by the caller.
> Bootstrapped and tested on x86_64-linux, together with the other patches.
> Ok?

This should be handled in num_sign_bit_copies itself, i.e. handle BImode there.


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