From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:42571) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TEhJA-0006Hf-Vo for qemu-devel@nongnu.org; Thu, 20 Sep 2012 10:00:53 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1TEhJ5-0006jy-A9 for qemu-devel@nongnu.org; Thu, 20 Sep 2012 10:00:48 -0400 Received: from mail-pb0-f45.google.com ([209.85.160.45]:44749) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TEhJ5-0006jn-0D for qemu-devel@nongnu.org; Thu, 20 Sep 2012 10:00:43 -0400 Received: by pbbrp12 with SMTP id rp12so5191951pbb.4 for ; Thu, 20 Sep 2012 07:00:41 -0700 (PDT) Sender: Richard Henderson Message-ID: <505B2185.2080207@twiddle.net> Date: Thu, 20 Sep 2012 07:00:37 -0700 From: Richard Henderson MIME-Version: 1.0 References: <1348084823-18277-1-git-send-email-aurelien@aurel32.net> <1348084823-18277-3-git-send-email-aurelien@aurel32.net> <505A3A3A.5070002@twiddle.net> <20120920055424.GB4164@ohm.aurel32.net> In-Reply-To: <20120920055424.GB4164@ohm.aurel32.net> Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [PATCH 2/9] tcg/optimizer: check types in copy propagation List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Aurelien Jarno Cc: qemu-devel@nongnu.org On 09/19/2012 10:54 PM, Aurelien Jarno wrote: > | mov_i32 r1,tmp6 > | movi_i64 tmp8,$0x20 > | shr_i64 tmp7,r1,tmp8 > > Here, tmp7 is replaced by r1. However r1 only contains the 32-bit low > part of tmp7, thus returning 0. Ok. Thanks for getting that on the record. r~