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Re: New insns for the s390 backend (3)
- From: Richard Henderson <rth at redhat dot com>
- To: Andreas Krebbel <Andreas dot Krebbel at gmx dot de>
- Cc: gcc-patches at gcc dot gnu dot org
- Date: Tue, 26 Aug 2003 14:34:14 -0700
- Subject: Re: New insns for the s390 backend (3)
- References: <200308261431.50093.Andreas.Krebbel@gmx.de>
On Tue, Aug 26, 2003 at 02:31:50PM +0200, Andreas Krebbel wrote:
> Because an AND instruction would additionally set the condition code register
> splitters are needed to get rid of the (clobber (reg:CC 33)) rtx.
I think you only need splitters here, not insn_and_split.
Moreover, I don't see why reload_completed is relevant.
It would probably be best if you arranged for the new
insn to be generated immediately from anddi3 instead of
waiting for combine to clean it up.
r~