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Re: Why can't CSE recognize const_int's in HIGH LO_SUM pair?
- To: "John David Anglin" <dave at hiauly1 dot hia dot nrc dot ca>
- Subject: Re: Why can't CSE recognize const_int's in HIGH LO_SUM pair?
- From: law at redhat dot com
- Date: Mon, 24 Sep 2001 11:28:20 -0600
- cc: rth at redhat dot com, bernds at redhat dot com, gcc at gcc dot gnu dot org
- Reply-To: law at redhat dot com
In message <200109241719.f8OHJdj1028320@hiauly1.hia.nrc.ca>you write:
> > Another approach is to allow all constants in compare/branch insns initia
> lly,
> > then use define_splits and friends to lower to the actual capabilities of
> > the chip later.
>
> Ths could be the best approach but my first impression was that it
> was likely more work to implement.
I could probably send you the stuff I was playing with (assuming that I can
still find it :-)
jeff