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([71.212.144.252]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-219dc971814sm58461385ad.79.2024.12.22.08.24.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 22 Dec 2024 08:24:53 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1734884694; x=1735489494; 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=MtPJbyi6qGACA18TCvDtHVp8Rw/uvIg0oIMOG458ijo=; b=KPp54ctJVAC1vayLELyB3sRUc3eRmxdSH7f1kGP5ff3kMGpNFKYe43teV/7iEdIW+9 h556M5wW8v5UO8KjGrtFyV9FZC+A3Vg0EGLRcynWQ4LrbHrPC2gXro3VW/56X1oj3fAe lAjvz3vuw0Y/s5XsfRsxXo1eJJyiwztmqm4nC2OKlw8Msp9yGrBEqPEpJK3MnMab3Wv2 oRLApYPRGAA+E8XqItNs1LZBKaRc2VOzwW0cD1rj9w5gK20tOZ1aFy3OEHWrvrUu00GZ wGP8wn9d2QVxig1RjT6u4Wi8kfUftijsybY6a1iEqBxp5b62h9hRoV3YPFWjO9YP6+6N jbLg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1734884694; x=1735489494; 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=MtPJbyi6qGACA18TCvDtHVp8Rw/uvIg0oIMOG458ijo=; b=ayX9PkVR1AAv100VuZ363MkFa2cPa25XmxbASYoXyQTW4ki5KTszziSEGi2OuWbdOw lV8Fz2zTG+OHIUM1EYCyE7SGBMqvG/oFAQYi2NloYflVjXGFG5jAoL2Ih0RYLrFf+JXf /NJXYlj62DTZBdcOcaSfEVmTW8tmBTIxzfG6CG3S0hiYea0VawHMypIpKcMPQl8uVELd KfLz2nPrnWT89ZpfSpL3Hbte7fQ5rm8JZk57HxxcbuSn+z+RZrwUTD2iQGPXX5Bl4FzI wddHUPWdClBzLcV9Ru/RUenyi/JxWKcu538XrbN4o0Nke6XU2ZI1fTjBUCMmS1BazShC 5CcQ== X-Gm-Message-State: AOJu0YxJjAMEJAQHLtMmg2+0LzYewiogoXhhS0dWWFYXuTKAv69Dtq8A GOFyqzG+IQRdzTl7kKq9QJ4mE3S2mWIP8dB+Emi2I4i3vLoPax1sGL0vZFo8Mu5+b3QPn++Xt7d MawM= X-Gm-Gg: ASbGncukCvtnw7EhpYKctgc17+sHWev0W2uhDGRcOuXk64qFxkf0+n0ypAjNm9ctuSG j/ct2RKU1o/YT9p1uEfyvsppC0qWTBV08DO//U/EYdqvvoPzz57vjibdEs3SzmG3eNJD7deBzBY qYM7QjvW4bRB6Rm6L3dfSvB7xTQKY5WFYaDxzSyZGozY9UTJ5/9HFMIwZW75ajujcKbaSZcZf2t PKxAzvd67zAhv3WSS3F6coUSdLxQRyIFn3ZTseKvqV5x3JdxItpVWVzl/QXoTE= X-Google-Smtp-Source: AGHT+IHB1Al7nn/N2N5s/BBiN+AwB81HNL2BXL17v571pOKppCXEGG7PzbEOA1ORAIOPAzjkT91RfA== X-Received: by 2002:a17:903:181:b0:216:66d2:f172 with SMTP id d9443c01a7336-219e6f4a86bmr118280835ad.56.1734884694198; Sun, 22 Dec 2024 08:24:54 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Cc: Pierrick Bouvier Subject: [PATCH v3 10/51] tcg/optimize: Use fold_masks_zs in fold_bswap Date: Sun, 22 Dec 2024 08:24:05 -0800 Message-ID: <20241222162446.2415717-11-richard.henderson@linaro.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20241222162446.2415717-1-richard.henderson@linaro.org> References: <20241222162446.2415717-1-richard.henderson@linaro.org> MIME-Version: 1.0 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::636; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x636.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 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 @linaro.org) X-ZM-MESSAGEID: 1734885156243116600 Content-Type: text/plain; charset="utf-8" Avoid the use of the OptContext slots. Find TempOptInfo once. Always set s_mask along the BSWAP_OS path, since the result is being explicitly sign-extended. Reviewed-by: Pierrick Bouvier Signed-off-by: Richard Henderson --- tcg/optimize.c | 20 +++++++++----------- 1 file changed, 9 insertions(+), 11 deletions(-) diff --git a/tcg/optimize.c b/tcg/optimize.c index d13001e53a..27b8f90453 100644 --- a/tcg/optimize.c +++ b/tcg/optimize.c @@ -1462,16 +1462,15 @@ static bool fold_brcond2(OptContext *ctx, TCGOp *op) static bool fold_bswap(OptContext *ctx, TCGOp *op) { uint64_t z_mask, s_mask, sign; + TempOptInfo *t1 =3D arg_info(op->args[1]); =20 - if (arg_is_const(op->args[1])) { - uint64_t t =3D arg_info(op->args[1])->val; - - t =3D do_constant_folding(op->opc, ctx->type, t, op->args[2]); - return tcg_opt_gen_movi(ctx, op, op->args[0], t); + if (t1->is_const) { + return tcg_opt_gen_movi(ctx, op, op->args[0], + do_constant_folding(op->opc, ctx->type, + t1->val, op->args[2])); } =20 - z_mask =3D arg_info(op->args[1])->z_mask; - + z_mask =3D t1->z_mask; switch (op->opc) { case INDEX_op_bswap16_i32: case INDEX_op_bswap16_i64: @@ -1499,18 +1498,17 @@ static bool fold_bswap(OptContext *ctx, TCGOp *op) /* If the sign bit may be 1, force all the bits above to 1. */ if (z_mask & sign) { z_mask |=3D sign; - s_mask =3D sign << 1; } + /* The value and therefore s_mask is explicitly sign-extended. */ + s_mask =3D sign; break; default: /* The high bits are undefined: force all bits above the sign to 1= . */ z_mask |=3D sign << 1; break; } - ctx->z_mask =3D z_mask; - ctx->s_mask =3D s_mask; =20 - return fold_masks(ctx, op); + return fold_masks_zs(ctx, op, z_mask, s_mask); } =20 static bool fold_call(OptContext *ctx, TCGOp *op) --=20 2.43.0