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Re: [RFC] Hack ifcvt.c to allow f.i. conditional swap
- From: Richard Henderson <rth at redhat dot com>
- To: Richard Guenther <rguenther at suse dot de>
- Cc: gcc-patches at gcc dot gnu dot org
- Date: Tue, 6 Sep 2005 10:55:56 -0700
- Subject: Re: [RFC] Hack ifcvt.c to allow f.i. conditional swap
- References: <Pine.LNX.4.58.0509051509220.20761@wotan.suse.de>
On Mon, Sep 05, 2005 at 03:17:53PM +0200, Richard Guenther wrote:
> Any comments? What testing is required to get such patch approved?
Before testing, you'd need some actual cost computation,
rather than hard-coding 3 or 1 insns.
> The x86 backend currently refuses to create a conditional move with
> a mem as target...
... because the hardware doesn't allow it either. Duh.
r~