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Re: some Sparc hackery in the works
- To: amylaar at cygnus dot co dot uk
- Subject: Re: some Sparc hackery in the works
- From: "David S. Miller" <davem at dm dot cobaltmicro dot com>
- Date: Mon, 13 Jul 1998 16:41:12 -0700
- CC: egcs at cygnus dot com
- References: <199807131854.TAA18918@phal.cygnus.co.uk>
From: Joern Rennecke <amylaar@cygnus.co.uk>
Date: Mon, 13 Jul 1998 19:54:53 +0100 (BST)
You usually get worse code if you try to open-code DImode
operations as RTL at rtl generation time. You can get the same
benefit for scheduling and delay slot filling if you povide
define_splits for the patterns in question; you can then also safe
the output template by replacing it with a '#', to indicate that
this pattern must be split.
If you look at my code, this is precisely what I'm doing.
Later,
David S. Miller
davem@dm.cobaltmicro.com