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Re: [PATCH] Fold zero extensions into bit-wise ANDs (take 2)

From: Richard Henderson <rth at redhat dot com>
To: Jakub Jelinek <jakub at redhat dot com>
Cc: Roger Sayle <roger at eyesopen dot com>, gcc-patches at gcc dot gnu dot org
Date: Thu, 18 Apr 2002 00:14:29 -0700
Subject: Re: [PATCH] Fold zero extensions into bit-wise ANDs (take 2)
References: <20020417125906.I17835@devserv.devel.redhat.com> <Pine.LNX.4.33.0204171251280.14186-100000@www.eyesopen.com> <20020417173734.L17835@devserv.devel.redhat.com>

On Wed, Apr 17, 2002 at 05:37:34PM -0400, Jakub Jelinek wrote:
> 	* fold-const.c (fold) [NOP_EXPR]: Convert (T)(x&c) into ((T)x&(T)c)
> 	for integer constant c (if x has unsigned type or sign bit is not
> 	set in c).  This folds the zero/sign extension into the bit-wise and
> 	operation.

Looks ok for mainline.


r~

References:
- Re: [PATCH] Fold zero extensions into bit-wise ANDs
  - From: Jakub Jelinek
- Re: [PATCH] Fold zero extensions into bit-wise ANDs
  - From: Roger Sayle
- [PATCH] Fold zero extensions into bit-wise ANDs (take 2)
  - From: Jakub Jelinek

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