From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:53365) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VuPte-0006NU-Vz for qemu-devel@nongnu.org; Sat, 21 Dec 2013 11:59:32 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1VuPtY-0002Qh-I8 for qemu-devel@nongnu.org; Sat, 21 Dec 2013 11:59:26 -0500 Received: from hall.aurel32.net ([2001:bc8:30d7:101::1]:46548) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VuPtY-0002QO-Bf for qemu-devel@nongnu.org; Sat, 21 Dec 2013 11:59:20 -0500 From: Aurelien Jarno Date: Sat, 21 Dec 2013 17:59:02 +0100 Message-Id: <1387645145-13069-6-git-send-email-aurelien@aurel32.net> In-Reply-To: <1387645145-13069-1-git-send-email-aurelien@aurel32.net> References: <1387645145-13069-1-git-send-email-aurelien@aurel32.net> Subject: [Qemu-devel] [PATCH 5/8] target-sh4: optimize negc using add2 and sub2 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Aurelien Jarno Signed-off-by: Aurelien Jarno --- target-sh4/translate.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/target-sh4/translate.c b/target-sh4/translate.c index 3af9ccd..3a3b2b6 100644 --- a/target-sh4/translate.c +++ b/target-sh4/translate.c @@ -796,12 +796,12 @@ static void _decode_opc(DisasContext * ctx) return; case 0x600a: /* negc Rm,Rn */ { - TCGv t0 = tcg_temp_new(); - tcg_gen_neg_i32(t0, REG(B7_4)); - tcg_gen_sub_i32(REG(B11_8), t0, cpu_sr_t); - tcg_gen_setcondi_i32(TCG_COND_GTU, cpu_sr_t, t0, 0); - tcg_gen_setcond_i32(TCG_COND_GTU, t0, REG(B11_8), t0); - tcg_gen_or_i32(cpu_sr_t, cpu_sr_t, t0); + TCGv t0 = tcg_const_i32(0); + tcg_gen_add2_i32(REG(B11_8), cpu_sr_t, + REG(B7_4), t0, cpu_sr_t, t0); + tcg_gen_sub2_i32(REG(B11_8), cpu_sr_t, + t0, t0, REG(B11_8), cpu_sr_t); + tcg_gen_andi_i32(cpu_sr_t, cpu_sr_t, 1); tcg_temp_free(t0); } return; -- 1.7.10.4