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Re: Reload producing lots of duplicate insns
- From: Steven Bosscher <stevenb dot gcc at gmail dot com>
- To: gcc at gcc dot gnu dot org
- Cc: Kenneth Zadeck <zadeck at naturalbridge dot com>, Steven Bosscher <stevenb dot gcc at gmail dot com>, Daniel Berlin <dberlin at dberlin dot org>, Richard Sandiford <richard at codesourcery dot com>
- Date: Sun, 26 Feb 2006 14:45:40 +0100
- Subject: Re: Reload producing lots of duplicate insns
- References: <200602261203.29310.steven@gcc.gnu.org> <4401ABBE.5090707@naturalbridge.com>
On Sunday 26 February 2006 14:23, Kenneth Zadeck wrote:
> Did richard's untested patch not fix this?
No. That patch only makes postreload not emit those reg-reg moves,
but it does not prevent reload from producing the redundant insns in
the first place. So that patch just papers over the problem we seem
to have in reload.
Gr.
Steven