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[73.169.12.54]) by smtp.gmail.com with ESMTPSA id g3-20020a92d7c3000000b00363942ad88bsm764655ilq.40.2024.02.02.11.48.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 02 Feb 2024 11:48:44 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1706903325; x=1707508125; darn=nongnu.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=18V9fmHvQ/OH/dC5uhhGZl0Ybe04gURoOmNZRaFWwMA=; b=GLSBUgrke5m0CfaDjP67Zipptty3z+EWv0rpiw1UgBMxgFt+bsFVnPx06rdlKOX6OZ lmvtoDhueM7UIrgXzX2pR757Jvktvqnluzu3NVMQ0u/PzM0S5UUbGGfLgvR9cIILbpbu 7LBTUhH8Lr+QvC62qUyrfsnBCO3r+TdP7fT+RQZFuHwMXVhUClVGkMTDwEHFVPaz891n nsIzyaPVi6lN990QqAafUivpgCkgE1YW9op9K3DbL4d5Fgwh9C3GA7DH52aOU6+XFKOd HDOsmfj+sxno1FMtd1RvF+WLclk+5N3DJjpLA2ObQJB76IpgkLhQ1kjjzvZDUDFCfkCb hXqg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1706903325; x=1707508125; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=18V9fmHvQ/OH/dC5uhhGZl0Ybe04gURoOmNZRaFWwMA=; b=hKc9ltTIGxG49Pir9y6U4vbWV3v3hJ8kj2OJAvQi9qPEHr91HvOtXFbG5KrWffpFVV t/gO+zrSTG3ufIbaEkFDzEvINwfJ5XKVybs6hiLBzNggcB+/D4OwUJRFWWV3n3OX2xOS euaRuAtvxlnnyMcjusdJJnAUGDuOraNVjSyf+eURgGju36Nah+ds8yLsIhXxl6JlD5mM y13FLJhI1Aw23gJOi2yhiU9+uFVCM2szoZNgIxgG1XXc2yWGhbRZtrcV5kRyTt5Cj6Df EFAfIazKAqgOMUdXzIhtsf8RciDoQJoo2VkOkWulsCbhxkVT0KtXKRA1O0lq7+LiATdZ NW2w== X-Gm-Message-State: AOJu0Yz4I7eeoeX3dt63TVef1Jf5/b5ldIzZ2fq+woRq17PrBVIKp0Kb hSDvwth/zyqlCI9RRneOfrjCiGTUp53M14S3XfCztq9084QF/zLn7ptOat1/+xk= X-Google-Smtp-Source: AGHT+IEKaGzQ3Ou/woIoQNJX6M7JYpxs+xA4PWoXuT926f4zHPg68somLpHdW3jmGB04/BbhL3Qx4w== X-Received: by 2002:a92:d1cd:0:b0:363:b880:4d2d with SMTP id u13-20020a92d1cd000000b00363b8804d2dmr1251754ilg.22.1706903324804; Fri, 02 Feb 2024 11:48:44 -0800 (PST) X-Forwarded-Encrypted: i=0; AJvYcCWRVUeIHcXRBHhL/jA+j5ShoKTYpQ8bRC9zI3si1dIowPgMbk1arLAom3trR4I9eDOP6q+H8DpWfMp1QnaAj3+fRvs16wRK6LFfnnNkQPpAjlPBqNm9F8YiER5JDcgsAO01gaMKJdP/2D5uUSp3Kqk4QyfDeA0md+mZPv2pdDn0/O/PE/gdOi5ukMsslPN82o9A2YZBNt/BW01vhxmY8M82XVPCfwR18zxRMwN8YiKkVaHKgfosjfVXHfvKuTvt+Y+APO9jtah3FTD2do8fYYEt2mBZ821goDOKse0o 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] Hexagon (target/hexagon) Only pass env to generated helper when needed Date: Fri, 2 Feb 2024 12:48:42 -0700 Message-Id: <20240202194842.148085-1-ltaylorsimpson@gmail.com> X-Mailer: git-send-email 2.34.1 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::12e; envelope-from=ltaylorsimpson@gmail.com; helo=mail-il1-x12e.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: 1706903371922100003 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. 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, 553 with env Signed-off-by: Taylor Simpson --- target/hexagon/gen_tcg.h | 3 +++ target/hexagon/attribs_def.h.inc | 1 + target/hexagon/hex_common.py | 22 +++++++++++++++++----- 3 files changed, 21 insertions(+), 5 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/attribs_def.h.inc b/target/hexagon/attribs_def.= h.inc index 87942d46f4..8949ee09cf 100644 --- a/target/hexagon/attribs_def.h.inc +++ b/target/hexagon/attribs_def.h.inc @@ -117,6 +117,7 @@ DEF_ATTRIB(IMPLICIT_READS_P1, "Reads the P1 register", = "", "") DEF_ATTRIB(IMPLICIT_READS_P2, "Reads the P2 register", "", "") DEF_ATTRIB(IMPLICIT_READS_P3, "Reads the P3 register", "", "") DEF_ATTRIB(IMPLICIT_WRITES_USR, "May write USR", "", "") +DEF_ATTRIB(IMPLICIT_READS_SP, "Reads the SP register", "", "") DEF_ATTRIB(COMMUTES, "The operation is communitive", "", "") DEF_ATTRIB(DEALLOCRET, "dealloc_return", "", "") DEF_ATTRIB(DEALLOCFRAME, "deallocframe", "", "") diff --git a/target/hexagon/hex_common.py b/target/hexagon/hex_common.py index 195620c7ec..12bc410bb2 100755 --- a/target/hexagon/hex_common.py +++ b/target/hexagon/hex_common.py @@ -101,6 +101,7 @@ def calculate_attribs(): add_qemu_macro_attrib('fLSBNEW1', 'A_IMPLICIT_READS_P1') add_qemu_macro_attrib('fLSBNEW1NOT', 'A_IMPLICIT_READS_P1') add_qemu_macro_attrib('fREAD_P3', 'A_IMPLICIT_READS_P3') + add_qemu_macro_attrib('fREAD_SP', 'A_IMPLICIT_READS_SP') =20 # Recurse down macros, find attributes from sub-macros macroValues =3D list(macros.values()) @@ -197,6 +198,16 @@ def get_tagimms(): return dict(zip(tags, list(map(compute_tag_immediates, tags)))) =20 =20 +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] or + "A_IMPLICIT_READS_P0" in attribdict[tag] or + "A_IMPLICIT_READS_SP" in attribdict[tag]) + + def need_slot(tag): if ( "A_CVI_SCATTER" not in attribdict[tag] @@ -1060,11 +1071,12 @@ 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