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Re: [PATCH] lower-subreg: Decompose multiword shifts

From: Paolo Bonzini <paolo dot bonzini at lu dot unisi dot ch>
To: Andreas Krebbel <Andreas dot Krebbel at de dot ibm dot com>
Cc: gcc-patches at gcc dot gnu dot org
Date: Fri, 03 Aug 2007 21:02:43 +0200
Subject: Re: [PATCH] lower-subreg: Decompose multiword shifts
References: <20070802153434.GA24953@blc4eb430604175.ibm.com> <46B20CB2.7000103@gnu.org> <20070803164054.GA9272@blc4eb430604175.ibm.com>
Reply-to: bonzini at gnu dot org

Sounds like a good idea. Although compared to emitting just move
instructions shifts would be more complex since I probably would need to
use the optab machinery - right?!

Yes, but Kenny just committed to dse.c a patch to use it, so you can look at it for an example.

Paolo

References:
- [PATCH] lower-subreg: Decompose multiword shifts
  - From: Andreas Krebbel
- Re: [PATCH] lower-subreg: Decompose multiword shifts
  - From: Paolo Bonzini
- Re: [PATCH] lower-subreg: Decompose multiword shifts
  - From: Andreas Krebbel

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