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Re: [PATCH][combine][v2] Canonicalise (r + r) to (r << 1) to aid recognition

From: Kyrill Tkachov <kyrylo dot tkachov at foss dot arm dot com>
To: Bernd Schmidt <bschmidt at redhat dot com>, GCC Patches <gcc-patches at gcc dot gnu dot org>
Cc: Segher Boessenkool <segher at kernel dot crashing dot org>, Jeff Law <law at redhat dot com>
Date: Tue, 05 Jan 2016 10:12:42 +0000
Subject: Re: [PATCH][combine][v2] Canonicalise (r + r) to (r << 1) to aid recognition
Authentication-results: sourceware.org; auth=none
References: <56741846 dot 60708 at foss dot arm dot com> <56741AB3 dot 8020501 at redhat dot com>

Hi all,

On 18/12/15 14:39, Bernd Schmidt wrote:

On 12/18/2015 03:29 PM, Kyrill Tkachov wrote:

Bootstrapped and tested on arm, aarch64, x86_64.
As before, there were no codegen differences for SPEC2006 on x86_64.
aarch64 SPEC2006 sees the effects described above.


I think this is OK. There may be some question as to whether this is a bug fix, so please wait a few days for objections before committing. I'm assuming there's no place which tries to do the opposite transformation...


As I didn't hear see objections I'll be committing this later today.

Thanks for the reviews.

Kyrill


Bernd

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