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Re: [PATCH 04/10] rs6000: Remove addic from the normal add pattern
- From: Segher Boessenkool <segher at kernel dot crashing dot org>
- To: David Edelsohn <dje dot gcc at gmail dot com>
- Cc: Eric Botcazou <ebotcazou at adacore dot com>, GCC Patches <gcc-patches at gcc dot gnu dot org>
- Date: Tue, 9 Dec 2014 11:01:40 -0600
- Subject: Re: [PATCH 04/10] rs6000: Remove addic from the normal add pattern
- Authentication-results: sourceware.org; auth=none
- References: <cover dot 1418024189 dot git dot segher at kernel dot crashing dot org> <20141208150139 dot GA5893 at gate dot crashing dot org> <CAGWvnykwvHH_6QfjN3Z=toANCug1D1M4pv9XS7LgbAqBoG7C7g at mail dot gmail dot com> <5840358 dot WoXYn8WzV1 at polaris> <CAGWvnyk6Ny6C9z83q_6iO6TQ4HYFv2EJiuMXuC9oRGfnFR0rYA at mail dot gmail dot com>
On Tue, Dec 09, 2014 at 11:48:44AM -0500, David Edelsohn wrote:
> We definitely will have to define addptrM3 and restore addM3 when
> rs6000 switches to LRA.
Can LRA deal with adding a clobber of a hard register? How would
you express that in the patterns, anyway?
Segher