From patchwork Thu Oct 28 02:41:25 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Richard Henderson X-Patchwork-Id: 12589213 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9F20AC433FE for ; Thu, 28 Oct 2021 03:15:53 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 5497560F0F for ; Thu, 28 Oct 2021 03:15:53 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 5497560F0F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=nongnu.org Received: from localhost ([::1]:43304 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mfvtQ-0003Dm-F4 for qemu-devel@archiver.kernel.org; Wed, 27 Oct 2021 23:15:52 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:59798) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mfvPj-0001Zy-R3 for qemu-devel@nongnu.org; Wed, 27 Oct 2021 22:45:12 -0400 Received: from mail-pf1-x42c.google.com ([2607:f8b0:4864:20::42c]:46880) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1mfvPe-0006Dl-UQ for qemu-devel@nongnu.org; Wed, 27 Oct 2021 22:45:10 -0400 Received: by mail-pf1-x42c.google.com with SMTP id x66so4539491pfx.13 for ; Wed, 27 Oct 2021 19:45:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=cdbRxhQ1wpUhR1+s4AARw22mXFf4Uzb2BWNb0AuXuG8=; b=hsgbcnLzOBX8cViVyh1Jec4LpNmsCMKMIj04b9RjP3iSMSF5GMgqUJdaQAK6VwWodX 7t8XJR0ceJfDq5yxAz4JlUd9jVkWDRvM8cgOZcvHFZRD6HoCx6SKEOuuY0U/HgHAb/Y7 jPvTghvYGp3LtJgXWdlkRcSeU2brl50subgDdFixSOtdJHpNru+txQ5NcEc//TbRktLv d/QyVSRhs5CGVfdYyAxXhnx4jehRMLWiTnsvdItPDI9VM+hdJx4vwOuhQG/OqZa2/z0U xyOZMGPCq9f/sYbqHgd8dyw6AmZYYGTsVY388d7vf0PU/QsnHx1eJILXvY3aaYqFCmFb +Nqw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=cdbRxhQ1wpUhR1+s4AARw22mXFf4Uzb2BWNb0AuXuG8=; b=a1HP0G0smkB7zL8TsnuCIf3tZ9+fLRmkVapHK0zjWCQYdf08LcMRCZMHJxp2xHfUA5 Z3sXKoWK25E5VNkTCKkiNzkbtiRstLiS6TCD2cBbeMLRHw3Z9dSKtsteWUKsn8HfvgZn XicY2SDy3iNWMnCVGogXtYnf/ipFqz28YfRM+nvYRaH5Ksp0d6PDDEW3ISY7uz+Z4ltW EDBc3D/kvoHn7+hBC4eLL5yuh6aRDZcxVL6zrlNjLmQtcjleGO0sVTDRPFpa2LtbD2Uj y7HfF60L4nepojR7SiIWFJibsW7W4j6ziRunOILmGOAC68m9gQW5iyWl7k5M9Z4j+DRy nlYA== X-Gm-Message-State: AOAM532XOb+mtn96dtARaaTY+TomZt7wx9N4drcMKxm/UNasrRA7EfnD GAd0Z1MQpV/kD6xoXxz55rvHHYbMxa9rOA== X-Google-Smtp-Source: ABdhPJwKjI0tqKr0bj5sFe6udHJfOfFWLRGPGKUOhz2zjR7NFx3Qt/UXXObKvKK8KfxeXysRYL4oBA== X-Received: by 2002:a05:6a00:23c8:b0:47c:37d5:430 with SMTP id g8-20020a056a0023c800b0047c37d50430mr1532748pfc.72.1635389105685; Wed, 27 Oct 2021 19:45:05 -0700 (PDT) Received: from localhost.localdomain ([71.212.134.125]) by smtp.gmail.com with ESMTPSA id z8sm995907pgc.53.2021.10.27.19.45.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 27 Oct 2021 19:45:05 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PULL 50/56] tcg/optimize: Use fold_xi_to_x for div Date: Wed, 27 Oct 2021 19:41:25 -0700 Message-Id: <20211028024131.1492790-51-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211028024131.1492790-1-richard.henderson@linaro.org> References: <20211028024131.1492790-1-richard.henderson@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::42c; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x42c.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: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Luis Pires , =?utf-8?q?Philippe_Mathieu-Daud?= =?utf-8?q?=C3=A9?= Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Recognize the identity function for division. Suggested-by: Luis Pires Reviewed-by: Luis Pires Reviewed-by: Philippe Mathieu-Daudé Signed-off-by: Richard Henderson --- tcg/optimize.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/tcg/optimize.c b/tcg/optimize.c index 907049fb06..f8b0709157 100644 --- a/tcg/optimize.c +++ b/tcg/optimize.c @@ -1218,7 +1218,11 @@ static bool fold_deposit(OptContext *ctx, TCGOp *op) static bool fold_divide(OptContext *ctx, TCGOp *op) { - return fold_const2(ctx, op); + if (fold_const2(ctx, op) || + fold_xi_to_x(ctx, op, 1)) { + return true; + } + return false; } static bool fold_dup(OptContext *ctx, TCGOp *op)