From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 8F1C2C77B73 for ; Mon, 24 Apr 2023 05:56:42 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pqp3K-0003Eo-2G; Mon, 24 Apr 2023 01:47:54 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pqp0C-0005ts-Cu for qemu-devel@nongnu.org; Mon, 24 Apr 2023 01:44:43 -0400 Received: from mail-wr1-x433.google.com ([2a00:1450:4864:20::433]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1pqp04-0005GI-CI for qemu-devel@nongnu.org; Mon, 24 Apr 2023 01:44:36 -0400 Received: by mail-wr1-x433.google.com with SMTP id ffacd0b85a97d-2f833bda191so2315635f8f.1 for ; Sun, 23 Apr 2023 22:44:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1682315070; x=1684907070; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=DyXO1yYcoTiYsNUxk6ECTx6lZnwHVIRHDFe68cV9zdA=; b=YZBvyGuOvS/vA+39E37lzl8UtM30hnbyl0tDA4NFVjtC5Imy4JYHSkLQW6sgwTlWWu t5vpH0qwQ8kgQMTaRmjvrxzNWROPtXRdDoNvRpSmOYDkwAXXIIosXCEc5zT3tapMshVE aafIzzWBXiePhENeOdtVjkhvw/+HukVYAThazgZzbek6OcqW/42w+oIyrQJNRUk7VFI+ /NSo2zRcFQInRHCWZscT4QClcrsbiEaHQrTMkvpRkDYn8S6Eb/rylGUrVFcbn4UO637Q spcNOK7f4RCZvB1coyDPf6u8YQ+mfYXi2CKt/2xoXItJXHJOjvYG6KIID2zSLeic+0SW 2ECA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1682315070; x=1684907070; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=DyXO1yYcoTiYsNUxk6ECTx6lZnwHVIRHDFe68cV9zdA=; b=PnmrNrK8uK9/HMklg0iOrXFgQYYGOz53Lv3zj8TXX1FW3ksVKHTTlolXrHfbKQupA9 k0z8aoIabF/Er1AWznxYr1aO1W5iT8nM1MGS7i4azog++KZjWS2svn/1fyvId04BXwt5 BIu8xXb6XqINtDv206Nt3cI2WL9olfjh5RnaaovsQVz7yAnfYjobZXyjQtngLyTHTBpG DFnIEBiq3y40UXv/i2tYVJo0Rh2PVr4RPzG0JFjr8XT+C+JOxQQmVpWnevXeb4EKIKUa 08JOQLU3yaTtYtBhre9B5YzXWEmVn7NCLCsph9cOUb6tSIAiYbcxmkcY2ZDztK2MmXwa 7Dmw== X-Gm-Message-State: AAQBX9fh7XwaHJ/0gTliQizK2PaChBIe/fcqoDpIYLuq6VTY8WrBqOW6 JPGbh3yuvnPV5c7T+5wVKnsE+0DtMdNjgGNG6uqL8w== X-Google-Smtp-Source: AKy350aQouMkGToA8Z1zbs0X+IH7dLoh8VRABiD0FHGqnV7UCqkWvsjp02Fj5AsEvpUkRI0NKL0lyA== X-Received: by 2002:adf:f009:0:b0:2ee:f77f:3d02 with SMTP id j9-20020adff009000000b002eef77f3d02mr8000129wro.0.1682315069858; Sun, 23 Apr 2023 22:44:29 -0700 (PDT) Received: from stoup.c.hoisthospitality.com (cust-west-loneq8-46-193-226-34.wb.wifirst.net. [46.193.226.34]) by smtp.gmail.com with ESMTPSA id u6-20020adff886000000b002f7780eee10sm9986693wrp.59.2023.04.23.22.44.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 23 Apr 2023 22:44:29 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: qemu-arm@nongnu.org, qemu-s390x@nongnu.org, qemu-riscv@nongnu.org, qemu-ppc@nongnu.org, git@xen0n.name, jiaxun.yang@flygoat.com Subject: [PATCH v3 40/57] tcg/i386: Convert tcg_out_qemu_st_slow_path Date: Mon, 24 Apr 2023 06:40:48 +0100 Message-Id: <20230424054105.1579315-41-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230424054105.1579315-1-richard.henderson@linaro.org> References: <20230424054105.1579315-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2a00:1450:4864:20::433; envelope-from=richard.henderson@linaro.org; helo=mail-wr1-x433.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Use tcg_out_st_helper_args. This eliminates the use of a tail call to the store helper. This may or may not be an improvement, depending on the call/return branch prediction of the host microarchitecture. Signed-off-by: Richard Henderson --- tcg/i386/tcg-target.c.inc | 57 +++------------------------------------ 1 file changed, 4 insertions(+), 53 deletions(-) diff --git a/tcg/i386/tcg-target.c.inc b/tcg/i386/tcg-target.c.inc index 4f3a7c7a6d..b77a4c71a6 100644 --- a/tcg/i386/tcg-target.c.inc +++ b/tcg/i386/tcg-target.c.inc @@ -1856,11 +1856,8 @@ static bool tcg_out_qemu_ld_slow_path(TCGContext *s, TCGLabelQemuLdst *l) */ static bool tcg_out_qemu_st_slow_path(TCGContext *s, TCGLabelQemuLdst *l) { - MemOpIdx oi = l->oi; - MemOp opc = get_memop(oi); - MemOp s_bits = opc & MO_SIZE; + MemOp opc = get_memop(l->oi); tcg_insn_unit **label_ptr = &l->label_ptr[0]; - TCGReg retaddr; /* resolve label address */ tcg_patch32(label_ptr[0], s->code_ptr - label_ptr[0] - 4); @@ -1868,56 +1865,10 @@ static bool tcg_out_qemu_st_slow_path(TCGContext *s, TCGLabelQemuLdst *l) tcg_patch32(label_ptr[1], s->code_ptr - label_ptr[1] - 4); } - if (TCG_TARGET_REG_BITS == 32) { - int ofs = 0; + tcg_out_st_helper_args(s, l, &ldst_helper_param); + tcg_out_branch(s, 1, qemu_st_helpers[opc & (MO_BSWAP | MO_SIZE)]); - tcg_out_st(s, TCG_TYPE_PTR, TCG_AREG0, TCG_REG_ESP, ofs); - ofs += 4; - - tcg_out_st(s, TCG_TYPE_I32, l->addrlo_reg, TCG_REG_ESP, ofs); - ofs += 4; - - if (TARGET_LONG_BITS == 64) { - tcg_out_st(s, TCG_TYPE_I32, l->addrhi_reg, TCG_REG_ESP, ofs); - ofs += 4; - } - - tcg_out_st(s, TCG_TYPE_I32, l->datalo_reg, TCG_REG_ESP, ofs); - ofs += 4; - - if (s_bits == MO_64) { - tcg_out_st(s, TCG_TYPE_I32, l->datahi_reg, TCG_REG_ESP, ofs); - ofs += 4; - } - - tcg_out_sti(s, TCG_TYPE_I32, oi, TCG_REG_ESP, ofs); - ofs += 4; - - retaddr = TCG_REG_EAX; - tcg_out_movi(s, TCG_TYPE_PTR, retaddr, (uintptr_t)l->raddr); - tcg_out_st(s, TCG_TYPE_PTR, retaddr, TCG_REG_ESP, ofs); - } else { - tcg_out_mov(s, TCG_TYPE_PTR, tcg_target_call_iarg_regs[0], TCG_AREG0); - tcg_out_mov(s, TCG_TYPE_TL, tcg_target_call_iarg_regs[1], - l->addrlo_reg); - tcg_out_mov(s, (s_bits == MO_64 ? TCG_TYPE_I64 : TCG_TYPE_I32), - tcg_target_call_iarg_regs[2], l->datalo_reg); - tcg_out_movi(s, TCG_TYPE_I32, tcg_target_call_iarg_regs[3], oi); - - if (ARRAY_SIZE(tcg_target_call_iarg_regs) > 4) { - retaddr = tcg_target_call_iarg_regs[4]; - tcg_out_movi(s, TCG_TYPE_PTR, retaddr, (uintptr_t)l->raddr); - } else { - retaddr = TCG_REG_RAX; - tcg_out_movi(s, TCG_TYPE_PTR, retaddr, (uintptr_t)l->raddr); - tcg_out_st(s, TCG_TYPE_PTR, retaddr, TCG_REG_ESP, - TCG_TARGET_CALL_STACK_OFFSET); - } - } - - /* "Tail call" to the helper, with the return address back inline. */ - tcg_out_push(s, retaddr); - tcg_out_jmp(s, qemu_st_helpers[opc & (MO_BSWAP | MO_SIZE)]); + tcg_out_jmp(s, l->raddr); return true; } #else -- 2.34.1