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Re: [RFA] m68k : replace some btst by movew to ccr
- From: Andreas Schwab <schwab at suse dot de>
- To: Philippe De Muyter <phdm at macqel dot be>
- Cc: gcc-patches at gcc dot gnu dot org
- Date: Wed, 11 Apr 2007 17:55:57 +0200
- Subject: Re: [RFA] m68k : replace some btst by movew to ccr
- References: <20070411093703.GA18001@ingate.macqel.be>
Philippe De Muyter <phdm@macqel.be> writes:
> Hi all,
>
> A simple patch that I use already for years for a whole uClinux-dist system.
>
> OK to apply ?
How did you test that, both in terms of correctness and profitability? On
the 68020 btst has a better best case performance than move to ccr, and on
the 68040 btst is faster.
Andreas.
--
Andreas Schwab, SuSE Labs, schwab@suse.de
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
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