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Re: [PATCH] Optimize nested SIGN_EXTENDs/ZERO_EXTENDs (PR target/45336)

From: Richard Henderson <rth at redhat dot com>
To: Jakub Jelinek <jakub at redhat dot com>
Cc: Paolo Bonzini <bonzini at gnu dot org>, Bernd Schmidt <bernds at codesourcery dot com>, gcc-patches at gcc dot gnu dot org
Date: Fri, 20 Aug 2010 09:07:32 -0700
Subject: Re: [PATCH] Optimize nested SIGN_EXTENDs/ZERO_EXTENDs (PR target/45336)
References: <20100819163330.GX702@tyan-ft48-01.lab.bos.redhat.com> <4C6E4F08.6070801@gnu.org> <20100820135046.GC702@tyan-ft48-01.lab.bos.redhat.com>

On 08/20/2010 06:50 AM, Jakub Jelinek wrote:
> 2010-08-20  Jakub Jelinek  <jakub@redhat.com>
> 	    Paolo Bonzini  <bonzini@gnu.org>
> 
> 	* simplify-rtx.c (simplify_unary_operation_1): Optimize
> 	(sign_extend (zero_extend ()) and
> 	({sign,zero}_extend (lshiftrt (ashift X (const_int I)) (const_int I))).

Ok.


r~

References:
- [PATCH] Optimize nested SIGN_EXTENDs/ZERO_EXTENDs (PR target/45336)
  - From: Jakub Jelinek
- Re: [PATCH] Optimize nested SIGN_EXTENDs/ZERO_EXTENDs (PR target/45336)
  - From: Paolo Bonzini
- Re: [PATCH] Optimize nested SIGN_EXTENDs/ZERO_EXTENDs (PR target/45336)
  - From: Jakub Jelinek

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