From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:56870) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YwfSY-0002SC-Rh for qemu-devel@nongnu.org; Sun, 24 May 2015 19:37:35 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1YwfSX-0004t8-1k for qemu-devel@nongnu.org; Sun, 24 May 2015 19:37:34 -0400 Received: from hall.aurel32.net ([2001:bc8:30d7:101::1]:40585) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YwfSW-0004sb-St for qemu-devel@nongnu.org; Sun, 24 May 2015 19:37:33 -0400 From: Aurelien Jarno Date: Mon, 25 May 2015 01:37:15 +0200 Message-Id: <1432510638-21021-6-git-send-email-aurelien@aurel32.net> In-Reply-To: <1432510638-21021-1-git-send-email-aurelien@aurel32.net> References: <1432510638-21021-1-git-send-email-aurelien@aurel32.net> Subject: [Qemu-devel] [PATCH v3 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 d5b448e..250632a 100644 --- a/target-sh4/translate.c +++ b/target-sh4/translate.c @@ -795,12 +795,12 @@ 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; -- 2.1.4