From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:52502) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1T9da8-0005DV-55 for qemu-devel@nongnu.org; Thu, 06 Sep 2012 11:01:28 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1T9dZx-0007Qz-Nl for qemu-devel@nongnu.org; Thu, 06 Sep 2012 11:01:24 -0400 Received: from hall.aurel32.net ([88.191.126.93]:44022) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1T9dZx-0007Pp-Gi for qemu-devel@nongnu.org; Thu, 06 Sep 2012 11:01:13 -0400 From: Aurelien Jarno Date: Thu, 6 Sep 2012 17:00:57 +0200 Message-Id: <1346943657-17256-9-git-send-email-aurelien@aurel32.net> In-Reply-To: <1346943657-17256-1-git-send-email-aurelien@aurel32.net> References: <1346943657-17256-1-git-send-email-aurelien@aurel32.net> Subject: [Qemu-devel] [PATCH 8/8] tcg/optimize: add constant folding for brcond 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 --- tcg/optimize.c | 27 ++++++++++++++++++++++++++- 1 file changed, 26 insertions(+), 1 deletion(-) diff --git a/tcg/optimize.c b/tcg/optimize.c index c4af1e8..1221b8b 100644 --- a/tcg/optimize.c +++ b/tcg/optimize.c @@ -601,6 +601,32 @@ static TCGArg *tcg_constant_folding(TCGContext *s, uint16_t *tcg_opc_ptr, args += 4; break; } + CASE_OP_32_64(brcond): + if (temps[args[0]].state == TCG_TEMP_CONST + && temps[args[1]].state == TCG_TEMP_CONST) { + if (do_constant_folding_cond(op, temps[args[0]].val, + temps[args[1]].val, args[2])) { + memset(temps, 0, nb_temps * sizeof(struct tcg_temp_info)); + gen_opc_buf[op_index] = INDEX_op_br; + gen_args[0] = args[3]; + gen_args += 1; + args += 4; + } else { + gen_opc_buf[op_index] = INDEX_op_nop; + args += 4; + } + break; + } else { + memset(temps, 0, nb_temps * sizeof(struct tcg_temp_info)); + 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; + 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))) { @@ -622,7 +648,6 @@ static TCGArg *tcg_constant_folding(TCGContext *s, uint16_t *tcg_opc_ptr, case INDEX_op_set_label: case INDEX_op_jmp: case INDEX_op_br: - CASE_OP_32_64(brcond): memset(temps, 0, nb_temps * sizeof(struct tcg_temp_info)); for (i = 0; i < def->nb_args; i++) { *gen_args = *args; -- 1.7.10.4