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Re: RTL cprop vs. fixed hard regs
- From: Segher Boessenkool <segher at kernel dot crashing dot org>
- To: gcc-patches at gcc dot gnu dot org
- Date: Thu, 29 Jan 2015 14:35:13 -0600
- Subject: Re: RTL cprop vs. fixed hard regs
- Authentication-results: sourceware.org; auth=none
- References: <20150116094227 dot GV23768 at bubble dot grove dot modra dot org> <20150116170324 dot GB12714 at gate dot crashing dot org> <20150117003712 dot GW23768 at bubble dot grove dot modra dot org> <9A8D0D09-4FC5-4C5F-9B4F-B0A3DC974643 at gmail dot com> <20150129143554 dot GB14796 at bubble dot grove dot modra dot org> <20150129192724 dot GA28561 at gate dot crashing dot org>
On Thu, Jan 29, 2015 at 01:27:24PM -0600, Segher Boessenkool wrote:
> On Fri, Jan 30, 2015 at 01:05:54AM +1030, Alan Modra wrote:
> > Segher, does this one look better to you? The previous patch turned
> > off constant propagation for fixed registers as well as register copy
> > propagation. The latter is all I really meant to do.
>
> I'm still not happy about not constant propagating any fixed reg.
s/constant/copy/, sorry.
Segher