From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:35456) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TDyij-0001WP-2E for qemu-devel@nongnu.org; Tue, 18 Sep 2012 10:24:22 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1TDyih-0002JJ-Gn for qemu-devel@nongnu.org; Tue, 18 Sep 2012 10:24:12 -0400 Received: from mail-pb0-f45.google.com ([209.85.160.45]:34846) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TDyih-0002Hy-AR for qemu-devel@nongnu.org; Tue, 18 Sep 2012 10:24:11 -0400 Received: by mail-pb0-f45.google.com with SMTP id rp12so94988pbb.4 for ; Tue, 18 Sep 2012 07:24:11 -0700 (PDT) Sender: Richard Henderson From: Richard Henderson Date: Tue, 18 Sep 2012 07:23:59 -0700 Message-Id: <1347978240-20260-5-git-send-email-rth@twiddle.net> In-Reply-To: <1347978240-20260-1-git-send-email-rth@twiddle.net> References: <1347978240-20260-1-git-send-email-rth@twiddle.net> Subject: [Qemu-devel] [PATCH 4/5] tcg: Optimize movcond for constant comparisons List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: aurelien@aurel32.net Signed-off-by: Richard Henderson --- tcg/optimize.c | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/tcg/optimize.c b/tcg/optimize.c index fba0ed9..5b0a8ce 100644 --- a/tcg/optimize.c +++ b/tcg/optimize.c @@ -397,6 +397,14 @@ static TCGArg *tcg_constant_folding(TCGContext *s, uint16_t *tcg_opc_ptr, args[3] = tcg_swap_cond(args[3]); } break; + CASE_OP_32_64(movcond): + if (temps[args[1]].state == TCG_TEMP_CONST + && temps[args[2]].state != TCG_TEMP_CONST) { + tmp = args[1]; + args[1] = args[2]; + args[2] = tmp; + args[5] = tcg_swap_cond(args[5]); + } default: break; } @@ -617,6 +625,27 @@ static TCGArg *tcg_constant_folding(TCGContext *s, uint16_t *tcg_opc_ptr, } args += 4; break; + CASE_OP_32_64(movcond): + if (temps[args[1]].state == TCG_TEMP_CONST + && temps[args[2]].state == TCG_TEMP_CONST) { + gen_opc_buf[op_index] = op_to_mov(op); + tmp = do_constant_folding_cond(op, temps[args[1]].val, + temps[args[2]].val, args[5]); + tcg_opt_gen_mov(s, gen_args, args[0], args[4-tmp], + nb_temps, nb_globals); + gen_args += 2; + } else { + reset_temp(args[0], nb_temps, nb_globals); + gen_args[0] = args[0]; + gen_args[1] = args[1]; + gen_args[2] = args[2]; + gen_args[3] = args[3]; + gen_args[4] = args[4]; + gen_args[5] = args[5]; + gen_args += 6; + } + args += 6; + break; case INDEX_op_call: nb_call_args = (args[0] >> 16) + (args[0] & 0xffff); if (!(args[nb_call_args + 1] & (TCG_CALL_CONST | TCG_CALL_PURE))) { -- 1.7.11.4