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Ping: ARM: More reorganization of extend patterns (PR43137)
- From: Bernd Schmidt <bernds at codesourcery dot com>
- To: GCC Patches <gcc-patches at gcc dot gnu dot org>, Richard Earnshaw <rearnsha at arm dot com>
- Date: Wed, 04 Aug 2010 16:56:08 +0200
- Subject: Ping: ARM: More reorganization of extend patterns (PR43137)
- References: <4C3C383E.8060604@codesourcery.com>
On 07/13/2010 11:56 AM, Bernd Schmidt wrote:
> This patch merges a number of different extend:DI patterns by using a
> QHSI mode_iterator. It also removes separate patterns from thumb2.md as
> we can just set attr ce_count for ARM patterns as well. I've completed
> what I'd partially done in my previous patch, which is to remove
> unnecessary constant pool handling from these patterns - none of them
> accept constants.
>
> To fix PR43137, I've added splitters that run before the subreg2 pass.
> In general, the ARM backend makes practically no use of lower-subreg; I
> have given up on fixing that for the moment as it was more effort than I
> can spare right now. Just doing it for these patterns is enough to be a
> win in certain cases.
http://gcc.gnu.org/ml/gcc-patches/2010-07/msg01036.html
Bernd