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Re: [Patch,AVR]: Fix PR50447 (4/n)
- From: Denis Chertykov <chertykov at gmail dot com>
- To: Georg-Johann Lay <avr at gjlay dot de>
- Cc: gcc-patches at gcc dot gnu dot org, Eric Weddington <eric dot weddington at atmel dot com>
- Date: Tue, 11 Oct 2011 19:55:56 +0400
- Subject: Re: [Patch,AVR]: Fix PR50447 (4/n)
- References: <4E9434EB.9010204@gjlay.de>
2011/10/11 Georg-Johann Lay <avr@gjlay.de>:
> This is a small addendum to PR50447.
>
> It's a change to addsi3 insn; the actual insn sequence printed is still the
> same (except for adding +/-1 to l-reg) but the effect on cc0 is worked out so
> that it can be used to cancel out comparisons like in long loops.
>
> cc insn attribute gets one more alternative and notice_update_cc calls
> respective output function that works out the effect on cc0.
>
> Passed without regressions. Ok for trunk?
Ok.
Denis.