From nobody Tue Nov 26 15:46:37 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=gmail.com ARC-Seal: i=1; a=rsa-sha256; t=1707180727; cv=none; d=zohomail.com; s=zohoarc; b=J2yor6LRj3/wDNQWFjl5N2tT3oBgBIKQThoqVTwikbAzf2neVWts71Vni/1efwcO9G58JqaTQoACLCHkLLY874hZx28muA1lYZBdKs/t8RNM7foivT9vqaNvj+ilOu4/vc9SywdWv+e4+fBhy/dcT2ad0AT3euSPgYKBsKzzCs8= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1707180727; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=Q5zixAlF4wZ6FLSTr9hS2N8Z0evbTrh/CxGYDAI0MKE=; b=nhOPGMLSorSvi5lmdXGTMWQ/3RBKoswOmhAo/41zZd4GTMQugwDwO/+SkqvFPbzy/HNr8rgsqxAFodbbXPWGYFASvgszbnC/vPQwaMo5I3L25Prfg1EvZuu8qdt1/fRQKgg7hJ8mGe3VkPLodItD+aXeD73L1WIxe5cEQVIuK+I= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1707180727982373.0364671604707; Mon, 5 Feb 2024 16:52:07 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rX9fm-0008Bk-H7; Mon, 05 Feb 2024 19:50:50 -0500 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 1rX9fl-0008BY-2O for qemu-devel@nongnu.org; Mon, 05 Feb 2024 19:50:49 -0500 Received: from mail-il1-x12c.google.com ([2607:f8b0:4864:20::12c]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1rX9fj-0000MP-9N for qemu-devel@nongnu.org; Mon, 05 Feb 2024 19:50:48 -0500 Received: by mail-il1-x12c.google.com with SMTP id e9e14a558f8ab-363cdbd584eso3355045ab.0 for ; Mon, 05 Feb 2024 16:50:46 -0800 (PST) Received: from taylor-ubuntu.hsd1.co.comcast.net (c-73-169-12-54.hsd1.co.comcast.net. [73.169.12.54]) by smtp.gmail.com with ESMTPSA id c8-20020a02a408000000b0046e2ce45dafsm245840jal.165.2024.02.05.16.50.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 05 Feb 2024 16:50:39 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1707180645; x=1707785445; darn=nongnu.org; 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=Q5zixAlF4wZ6FLSTr9hS2N8Z0evbTrh/CxGYDAI0MKE=; b=aCU//OuklJHAoe0pAz2hQhs8bXV0j6g8yX4bL6zsobFXHJsbrEDVycsYpoQm+qJiL/ G7bBRAR7IZ6fUR0hwrMIMesGp70//QTlf8Tp1BI0r4bU/Fp09UPMQI5Q6n1KRsYL9NMK xoivR+HVfAuvZCJEoCUQhwEttYO/4+P7kv33YgKGuvnu51aZLM6Gx6fo4kuyHZUIvGoi aBPjuao+h/4H4Ii89o/qjyfzzbGq35+pY6dy8hwySAMSx7LagI76nUhqbRfE2USzZisQ 99HAqckEWAQ/bJ7e6yxCByiAZPhSrRGSsAD82fLBw1An7yx/ysPNU+tU6/C/pM8366UP sN4g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1707180645; x=1707785445; 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=Q5zixAlF4wZ6FLSTr9hS2N8Z0evbTrh/CxGYDAI0MKE=; b=gfIbPvIwMZHYzXlD9G6tsXssVbnFBkLdG77XggbY99qWz83Hjjzjbe7geAf3GvW9qU 0zLQO5aazP99nYSpLFoPBLnqUX92osYs4KaB9rNkKdtgC2eokMnDPRX7RXHJuV1A6Gcm m49iJ5MuGvJLMdU+TGiecQG11fEZkZRURhyYbIH0JhWcHRQbdL6cLG0TxyM8f5y+BbCl liU3cxoQuGp6O3u5DJDDEDhBEghjkMSA3lN9/MCNtNpHwJsKI8uDXyms9Tj07vJjTi85 bMcruv8BqH+jcouw52hamu2mL0wsNa0gwIVKeL5O4ChnCIZJFaZnq580oNjpBggGM0i6 eViA== X-Gm-Message-State: AOJu0YzN76+LlAxHuB9MWGMX6wiGTq/Q4VPltiQYyU9IAtMi1JSnhy+x VKXgkJ6LW0y+jx77xXqoV2shz6XIkE5jexCwCmyCA3I/iyWntC+Dtb0YZQy4Ghw= X-Google-Smtp-Source: AGHT+IEISFLpty9naf6ZLEqQhCvliwaUFcWUGiW6qTz5b7eqtQ1ISLxAMUTMKSJT0cE5cKJBmS5hFg== X-Received: by 2002:a92:d6cc:0:b0:363:bfc7:74b1 with SMTP id z12-20020a92d6cc000000b00363bfc774b1mr1309408ilp.32.1707180640120; Mon, 05 Feb 2024 16:50:40 -0800 (PST) X-Forwarded-Encrypted: i=0; AJvYcCW65dofP5CJrXYFRlXsf7zFuI6CLu1m2WZvrLIr4gKYVu3QXdzBC3neVb6o6lKqL0GJ65pbqecjNhX937sdpXwRRYjbZdaF+9AE0etnrcRzszPUOymOFVBAvvvldODCHhvxJre8Jxj8WFdJlh6DOzonngBMSOkuxf/zCC/nXSUVKjtlch4GANqxbMbUSzff1l5C6+k4Zb3nUJ4INzwZwdcoJyeMcJ6ftt3qnmm6jt4NBi4P6RUJqCCF5SZESCF368uBBkp2pTo2Glb6jUVfdXjZEm+WxnCBAoPLx516 From: Taylor Simpson To: qemu-devel@nongnu.org Cc: bcain@quicinc.com, quic_mathbern@quicinc.com, sidneym@quicinc.com, quic_mliebel@quicinc.com, richard.henderson@linaro.org, philmd@linaro.org, ale@rev.ng, anjo@rev.ng, ltaylorsimpson@gmail.com Subject: [PATCH v2 3/3] Hexagon (target/hexagon) Only pass env to generated helper when needed Date: Mon, 5 Feb 2024 17:50:34 -0700 Message-Id: <20240206005034.267283-4-ltaylorsimpson@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240206005034.267283-1-ltaylorsimpson@gmail.com> References: <20240206005034.267283-1-ltaylorsimpson@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::12c; envelope-from=ltaylorsimpson@gmail.com; helo=mail-il1-x12c.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, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham 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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @gmail.com) X-ZM-MESSAGEID: 1707180728754100003 Currently, we pass env to every generated helper. When the semantics of the instruction only depend on the arguments, this is unnecessary and adds extra overhead to the helper call. We add the TCG_CALL_NO_RWG_SE flag to any non-HVX helpers that don't get the ptr to env. The A2_nop and SA1_setin1 instructions end up with no arguments. This results in a "old-style function definition" error from the compiler, so we write overrides for them. With this change, the number of helpers with env argument is idef-parser enabled: 329 total, 23 with env idef-parser disabled: 1543 total, 550 with env Signed-off-by: Taylor Simpson --- target/hexagon/gen_tcg.h | 3 +++ target/hexagon/gen_helper_protos.py | 10 +++++++++- target/hexagon/hex_common.py | 23 ++++++++++++++++++----- 3 files changed, 30 insertions(+), 6 deletions(-) diff --git a/target/hexagon/gen_tcg.h b/target/hexagon/gen_tcg.h index 1c4391b415..e9ac2e3fe0 100644 --- a/target/hexagon/gen_tcg.h +++ b/target/hexagon/gen_tcg.h @@ -1369,3 +1369,6 @@ gen_helper_raise_exception(tcg_env, excp); \ } while (0) #endif + +#define fGEN_TCG_A2_nop(SHORTCODE) do { } while (0) +#define fGEN_TCG_SA1_setin1(SHORTCODE) tcg_gen_movi_tl(RdV, -1) diff --git a/target/hexagon/gen_helper_protos.py b/target/hexagon/gen_helpe= r_protos.py index c82b0f54e4..6e98429752 100755 --- a/target/hexagon/gen_helper_protos.py +++ b/target/hexagon/gen_helper_protos.py @@ -40,7 +40,15 @@ def gen_helper_prototype(f, tag, tagregs, tagimms): declared.append(arg.proto_arg) =20 arguments =3D ", ".join(declared) - f.write(f"DEF_HELPER_{len(declared) - 1}({tag}, {arguments})\n") + + ## Add the TCG_CALL_NO_RWG_SE flag to helpers that don't take the env + ## argument and aren't HVX instructions. Since HVX instructions take + ## pointers to their arguments, they will have side effects. + if hex_common.need_env(tag) or hex_common.is_hvx_insn(tag): + f.write(f"DEF_HELPER_{len(declared) - 1}({tag}, {arguments})\n") + else: + f.write(f"DEF_HELPER_FLAGS_{len(declared) - 1}({tag}, " + f"TCG_CALL_NO_RWG_SE, {arguments})\n") =20 =20 def main(): diff --git a/target/hexagon/hex_common.py b/target/hexagon/hex_common.py index eb28aa98fe..ee08195aba 100755 --- a/target/hexagon/hex_common.py +++ b/target/hexagon/hex_common.py @@ -206,6 +206,18 @@ def need_sp(tag): return "A_IMPLICIT_READS_SP" in attribdict[tag] =20 =20 +def is_hvx_insn(tag): + return "A_CVI" in attribdict[tag] + + +def need_env(tag): + return ("A_STORE" in attribdict[tag] or + "A_LOAD" in attribdict[tag] or + "A_CVI_GATHER" in attribdict[tag] or + "A_CVI_SCATTER" in attribdict[tag] or + "A_IMPLICIT_WRITES_USR" in attribdict[tag]) + + def need_slot(tag): if ( "A_CVI_SCATTER" not in attribdict[tag] @@ -1069,11 +1081,12 @@ def helper_args(tag, regs, imms): args =3D [] =20 ## First argument is the CPU state - args.append(HelperArg( - "env", - "tcg_env", - "CPUHexagonState *env" - )) + if need_env(tag): + args.append(HelperArg( + "env", + "tcg_env", + "CPUHexagonState *env" + )) =20 ## For predicated instructions, we pass in the destination register if is_predicated(tag): --=20 2.34.1