This is the mail archive of the
gcc-patches@gcc.gnu.org
mailing list for the GCC project.
Re: [Patch,AVR]: PR50447: Tweak addhi3
- 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, 18 Oct 2011 16:24:10 +0400
- Subject: Re: [Patch,AVR]: PR50447: Tweak addhi3
- References: <4E9D6966.6000003@gjlay.de>
2011/10/18 Georg-Johann Lay <avr@gjlay.de>:
> This patch do some tweaks to addhi3 like adding QI scratch register.
>
> The original *addhi3 insn is still there and located prior to new
> addhi3_clobber insn because addhi3 is special to reload (thanks Danis for this
> note) so that there is a version with and a version without scratch register.
>
> Patch passes without regressions.
>
Which improvements added by this patch ?
Denis.