From patchwork Mon Jun 1 21:29:44 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Aurelien Jarno X-Patchwork-Id: 479200 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 33BEC1412F4 for ; Tue, 2 Jun 2015 07:32:46 +1000 (AEST) Received: from localhost ([::1]:54501 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YzXK8-0000ba-Bf for incoming@patchwork.ozlabs.org; Mon, 01 Jun 2015 17:32:44 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:47502) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YzXHX-00046Y-5c for qemu-devel@nongnu.org; Mon, 01 Jun 2015 17:30:05 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1YzXHT-00011C-KB for qemu-devel@nongnu.org; Mon, 01 Jun 2015 17:30:03 -0400 Received: from hall.aurel32.net ([2001:bc8:30d7:101::1]:56134) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YzXHT-00010o-FB for qemu-devel@nongnu.org; Mon, 01 Jun 2015 17:29:59 -0400 Received: from weber.rr44.fr ([2001:470:d4ed:0:7e05:7ff:fe0d:f152]) by hall.aurel32.net with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.84) (envelope-from ) id 1YzXHS-0003So-6F; Mon, 01 Jun 2015 23:29:58 +0200 Received: from aurel32 by weber.rr44.fr with local (Exim 4.85) (envelope-from ) id 1YzXHR-0006Og-8B; Mon, 01 Jun 2015 23:29:57 +0200 From: Aurelien Jarno To: qemu-devel@nongnu.org Date: Mon, 1 Jun 2015 23:29:44 +0200 Message-Id: <1433194188-24514-5-git-send-email-aurelien@aurel32.net> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1433194188-24514-1-git-send-email-aurelien@aurel32.net> References: <1433194188-24514-1-git-send-email-aurelien@aurel32.net> X-detected-operating-system: by eggs.gnu.org: Error: Malformed IPv6 address (bad octet value). X-Received-From: 2001:bc8:30d7:101::1 Cc: Aurelien Jarno Subject: [Qemu-devel] [PULL 4/8] target-sh4: optimize subc using sub2 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Reviewed-by: Richard Henderson Signed-off-by: Aurelien Jarno --- target-sh4/translate.c | 15 ++++++--------- 1 file changed, 6 insertions(+), 9 deletions(-) diff --git a/target-sh4/translate.c b/target-sh4/translate.c index a7a8f39..d5b448e 100644 --- a/target-sh4/translate.c +++ b/target-sh4/translate.c @@ -881,18 +881,15 @@ static void _decode_opc(DisasContext * ctx) case 0x300a: /* subc Rm,Rn */ { TCGv t0, t1, t2; - t0 = tcg_temp_new(); + t0 = tcg_const_tl(0); t1 = tcg_temp_new(); - tcg_gen_sub_i32(t1, REG(B11_8), REG(B7_4)); - tcg_gen_sub_i32(t0, t1, cpu_sr_t); t2 = tcg_temp_new(); - tcg_gen_setcond_i32(TCG_COND_LTU, t2, REG(B11_8), t1); - tcg_gen_setcond_i32(TCG_COND_LTU, t1, t1, t0); - tcg_gen_or_i32(cpu_sr_t, t1, t2); - tcg_temp_free(t2); - tcg_temp_free(t1); - tcg_gen_mov_i32(REG(B11_8), t0); + tcg_gen_sub2_i32(t1, t2, REG(B11_8), t0, REG(B7_4), t0); + tcg_gen_sub2_i32(REG(B11_8), cpu_sr_t, t1, t2, cpu_sr_t, t0); + tcg_gen_andi_i32(cpu_sr_t, cpu_sr_t, 1); tcg_temp_free(t0); + tcg_temp_free(t1); + tcg_temp_free(t2); } return; case 0x300b: /* subv Rm,Rn */