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Re: reload vs adds with clobbers
- From: Ulrich Weigand <weigand at immd1 dot informatik dot uni-erlangen dot de>
- To: dj at redhat dot com
- Cc: gcc at gcc dot gnu dot org
- Date: Sat, 31 May 2003 00:10:22 +0200 (MET DST)
- Subject: Re: reload vs adds with clobbers
DJ Delorie wrote:
>In gen_reload (reload1.c) there's a chunk of code that creates an add
>insn without going through the usual expanders:
[snip]
>What's the right way to address this problem?
We're having the same problem on s390. The way I've fixed it
is to prevent gen_reload from ever taking that path by marking
all PLUS expressions that would otherwise go there as needing
a secondary reload (via SECONDARY_INPUT_RELOAD_CLASS) and
doing the right thing in reload_insi ...
Bye,
Ulrich
--
Dr. Ulrich Weigand
weigand@informatik.uni-erlangen.de