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Re: [patch] h8300.c: Improve shifts.
- To: Jeffrey A Law <law at cygnus dot com>
- Subject: Re: [patch] h8300.c: Improve shifts.
- From: Richard Henderson <rth at cygnus dot com>
- Date: Fri, 11 Aug 2000 14:13:37 -0700
- Cc: Kazu Hirata <kazu at hxi dot com>, gcc-patches at gcc dot gnu dot org
- References: <20000811133812.A32198@cygnus.com> <4387.966027531@upchuck>
On Fri, Aug 11, 2000 at 02:58:51PM -0600, Jeffrey A Law wrote:
> Kazu is generating a loop for the n << m part -- the oods that we're
> going to be able to fold things are pretty slim when we generate a loop
> for such stuff.
You probably don't want to have the loop in rtl until at least sched1.
Letting cse/combine do constant substitution is more valuable I would
think.
r~