From nobody Sun Nov 24 07:55:13 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=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1726073582; cv=none; d=zohomail.com; s=zohoarc; b=TZuCoZ7ShRCrnRJ2K9QyIXqcFpYt7iOwHgV6QLlHjvkeA5PaeYsnwDDJO66VjpKF2Rm0lFaONmRbjKemGUilJriaigHClAbZCSe9OMvkXUxhsGHTBkkCCahb+/SIL9e8Kmpd455kKjfBir60t3DyaTQ1VuVNDfbtoQzJY2NVYT4= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1726073582; 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=OWl7Xv2JGXBckAdLaFuhNWtujP2/LH0xkeEqhVhx7Pk=; b=H/4aeSywOhI+mQQhT/JiO7LlW0P5E2MWXIpVTRRgSc3MOVsMBhv/hKNep3SpqwTVhrgK2sN4fV+JhAolnjVIzPR19GoVdGh27cQxNhSfh7gyrPve3Z2yBFxGorz8iZVlKVLClWALjp45JCwYa2Wb874PXhnZ1mT7vSNVWcnw0bE= 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 1726073582557227.62954998648763; Wed, 11 Sep 2024 09:53:02 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1soQYW-0002EJ-M1; Wed, 11 Sep 2024 12:51:00 -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 1soQYU-00027L-Pl for qemu-devel@nongnu.org; Wed, 11 Sep 2024 12:50:58 -0400 Received: from mail-pg1-x531.google.com ([2607:f8b0:4864:20::531]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1soQYT-0003fF-6t for qemu-devel@nongnu.org; Wed, 11 Sep 2024 12:50:58 -0400 Received: by mail-pg1-x531.google.com with SMTP id 41be03b00d2f7-7d4f85766f0so62239a12.2 for ; Wed, 11 Sep 2024 09:50:56 -0700 (PDT) Received: from stoup.. (174-21-81-121.tukw.qwest.net. [174.21.81.121]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-71908fe4e7esm3186947b3a.80.2024.09.11.09.50.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 11 Sep 2024 09:50:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1726073456; x=1726678256; 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=OWl7Xv2JGXBckAdLaFuhNWtujP2/LH0xkeEqhVhx7Pk=; b=cTnzXQ3tFsRr2YACtK5S09dtpXU64mhaoMeXSU6bhHFk9/hrfxBF1SXnjpYg6qP4vQ rkeHr6yRbs5PQutjnJpW7x+U77IzVsZHLhpwXD33x/D3uCGetBNFycDCBBJcox92U38M +9Zpgf82cgsiIwSU/ynYPMj+cqweZ/Got6ApdrzkGO3dYVwC+hATP+aj0d6ur6Pgxpaw Vs1ODoSLefB2G1VKc+86TwvMpEa+oVf6VvSjBenrmaeHGrsx7KFN2VyENq/ZXp0MIJSs EgaAPX7sBleNpaLqtIfB2Tsyh3Bt2ToA8XjLB8yYMk3D8iscs81NojV0HYKD5kr7ZC4w n21Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1726073456; x=1726678256; 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=OWl7Xv2JGXBckAdLaFuhNWtujP2/LH0xkeEqhVhx7Pk=; b=jrPEY8WXiV+vFmpwPGWpMCDdUSJLAqXiGq7eW3i+0QUgHnEwIJORaRGXJVVZ7Z9q71 h/O/84oGiMbGsqu554e8XZaRU/6l2aHhnTLygSYlxij+OUn/W0/TLTvxMFiyTP2RIT/U CWjoqopvs3MzN8yvUKxvARfjWMwcsrZZyamKacFEbkoRDTJut3catVU9bp6P/F0kltgz dz0BLp1SIFRc52kSYVs23d3RdtWEkmiMJXVnX6QhokIAbYGGJAKZWxEtb/uXfTw+yTGR BCrQkCOrsr6rSRVWvfQ/4kMqxX32ONs92kIA6O3cCZiB9RB1+fwVZtm0LB/kWDx8xbAy /B4A== X-Gm-Message-State: AOJu0YzBR2S6KmQAqPv9BPWQhH2ZZm6kApE5EIjlilhnCXCzQQhrzhdh 9VvMDh29DLfwvezqsMepipZg72tzBm161N5r01D1MYE7+r+pjhZwrddtmHRPzG4waXnefl1Khgw I X-Google-Smtp-Source: AGHT+IGC2AL6z0GKInsRR+HteUSB03nd4G2bjhHWkkNJSRlq7DkDuQkM9t/SbCX3LBZzcNtF4vSZYw== X-Received: by 2002:a05:6a20:4499:b0:1ce:d418:a45c with SMTP id adf61e73a8af0-1cf62d88a65mr4115749637.50.1726073455567; Wed, 11 Sep 2024 09:50:55 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: zhiwei_liu@linux.alibaba.com, tangtiancheng.ttc@alibaba-inc.com, philmd@linaro.org Subject: [PATCH v2 07/18] tcg/optimize: Fold movcond with true and false values identical Date: Wed, 11 Sep 2024 09:50:36 -0700 Message-ID: <20240911165047.1035764-8-richard.henderson@linaro.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240911165047.1035764-1-richard.henderson@linaro.org> References: <20240911165047.1035764-1-richard.henderson@linaro.org> 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::531; envelope-from=richard.henderson@linaro.org; helo=mail-pg1-x531.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: 1726073584781116600 Fold "x =3D cond ? y : y" to "x =3D y". Reviewed-by: Philippe Mathieu-Daud=C3=A9 Signed-off-by: Richard Henderson --- tcg/optimize.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/tcg/optimize.c b/tcg/optimize.c index ba16ec27e2..cf311790e0 100644 --- a/tcg/optimize.c +++ b/tcg/optimize.c @@ -1851,6 +1851,11 @@ static bool fold_movcond(OptContext *ctx, TCGOp *op) { int i; =20 + /* If true and false values are the same, eliminate the cmp. */ + if (args_are_copies(op->args[3], op->args[4])) { + return tcg_opt_gen_mov(ctx, op, op->args[0], op->args[3]); + } + /* * Canonicalize the "false" input reg to match the destination reg so * that the tcg backend can implement a "move if true" operation. --=20 2.43.0