From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:38579) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YWVFA-000607-1A for qemu-devel@nongnu.org; Fri, 13 Mar 2015 15:27:36 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1YWVF5-0003kA-1n for qemu-devel@nongnu.org; Fri, 13 Mar 2015 15:27:35 -0400 Received: from mail-qc0-x232.google.com ([2607:f8b0:400d:c01::232]:41834) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YWVF4-0003k2-UO for qemu-devel@nongnu.org; Fri, 13 Mar 2015 15:27:30 -0400 Received: by qcrw7 with SMTP id w7so29076725qcr.8 for ; Fri, 13 Mar 2015 12:27:30 -0700 (PDT) Received: from anchor.com (50-194-63-110-static.hfc.comcastbusiness.net. [50.194.63.110]) by mx.google.com with ESMTPSA id 74sm2028572qgp.9.2015.03.13.12.27.29 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 13 Mar 2015 12:27:29 -0700 (PDT) Sender: Richard Henderson From: Richard Henderson Date: Fri, 13 Mar 2015 12:26:57 -0700 Message-Id: <1426274817-25763-1-git-send-email-rth@twiddle.net> Subject: [Qemu-devel] [PATCH] tcg/optimize: Handle or r, a, a with constant a List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org As seen with ubuntu-5.10-live-powerpc.iso. Reported-by: Mark Cave-Ayland Signed-off-by: Richard Henderson --- tcg/optimize.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/tcg/optimize.c b/tcg/optimize.c index 067917c..37c1110 100644 --- a/tcg/optimize.c +++ b/tcg/optimize.c @@ -980,8 +980,11 @@ static void tcg_constant_folding(TCGContext *s) if (temps_are_copies(args[1], args[2])) { if (temps_are_copies(args[0], args[1])) { tcg_op_remove(s, op); - } else { + } else if (temps[args[1]].state != TCG_TEMP_CONST) { tcg_opt_gen_mov(s, op, args, opc, args[0], args[1]); + } else { + tcg_opt_gen_movi(s, op, args, opc, + args[0], temps[args[1]].val); } continue; } -- 2.1.0