From mboxrd@z Thu Jan 1 00:00:00 1970 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 B2D0DC433F5 for ; Thu, 7 Oct 2021 20:40:24 +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 50A5F61075 for ; Thu, 7 Oct 2021 20:40:24 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 50A5F61075 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]:52016 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mYaBj-0001oe-DF for qemu-devel@archiver.kernel.org; Thu, 07 Oct 2021 16:40:23 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:60664) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mYZXJ-0007Zo-PK for qemu-devel@nongnu.org; Thu, 07 Oct 2021 15:58:38 -0400 Received: from mail-pf1-x42d.google.com ([2607:f8b0:4864:20::42d]:36650) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1mYZXI-0003v8-9D for qemu-devel@nongnu.org; Thu, 07 Oct 2021 15:58:37 -0400 Received: by mail-pf1-x42d.google.com with SMTP id m26so6259564pff.3 for ; Thu, 07 Oct 2021 12:58:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:subject:date:message-id:in-reply-to:references:mime-version :content-transfer-encoding; bh=NCnmxC0/EB26lNMO55xRTDlo+OZH62QpEouvYYVySyw=; b=oGwwBVyd45SkJF+tL8UNcUK7bm5D+5ry2Piqj9Hry2WZgmu7Gg8elZdMl2i7VO0dXq HC+81/99SBunKz23TaSAnOzVSfPnVf03lRNRDbVFQBMz3igCYiHRdjYJV7GGFr/11Y+z dbl8XaTJHJZXhWTvsD/03MZyPk85Y7Gt9bAlpvyQVTP/OKT5iPDEsWRD6ys3nA2fe0O5 LdvSmlam0arMwHj9JjZasEWJrJQss6OREhUTL/iOiEffs9dFjkWFNEf3W2rvHxMn7ZrA el/i2eBmTOdtsKMRCpK0Pfp+O6PkXuPVDs8Nk0EBEcanvxOgJxKizzLpJbBRg6FCo8Hm XDGg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=NCnmxC0/EB26lNMO55xRTDlo+OZH62QpEouvYYVySyw=; b=DDwX8bEFDM/KFJZpwjKxbyMKIhLeUDqdl+qRfATJiNIge41lbUXojdGvAfJNCmieRv spT9soahkxI/E27Tso0Uwpaub/YHlDfOaC75aj0dvABa+1sNfiNE07kE/S71CtBCRaOX y0kP7dexHWfP4jGt1vmNqtMWh2nKo6I798waxCYikgcLTmqLogFvc1ade0on80Lq7MTy g3YnBFtukEy6fqnaPDypXcZiUO4Kt5tNKo6yYMMgnPj+l4AHlRKmgAmKBH92D4ko5P2C +DS3ME+FmWF/lpdHH2ZMZg1tPGbu3mIHrz5fRHCvBrBiqFUIStm91f4KjQ/xPf3cHvPC pJjA== X-Gm-Message-State: AOAM532Memt2w/GkkviApp92dRoJf49LOm2EmKuFLZX0JQoQAU1vs27Y uLx+JTNUIGrXVKFNuwRk17HHpcvoGR0J3Q== X-Google-Smtp-Source: ABdhPJwyULXEaeTOh6QqeJqgI+fz4nGWwkDwDLRCejJHmPWHxwCPXaob6shSlcuk8uQvDnpG5vhyqw== X-Received: by 2002:aa7:9209:0:b0:44b:e5d4:d8cb with SMTP id 9-20020aa79209000000b0044be5d4d8cbmr6028853pfo.65.1633636714936; Thu, 07 Oct 2021 12:58:34 -0700 (PDT) Received: from localhost.localdomain ([71.212.134.125]) by smtp.gmail.com with ESMTPSA id t2sm8995380pjf.1.2021.10.07.12.58.33 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 07 Oct 2021 12:58:33 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v2 47/48] tcg/optimize: Propagate sign info for bit counting Date: Thu, 7 Oct 2021 12:54:55 -0700 Message-Id: <20211007195456.1168070-48-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211007195456.1168070-1-richard.henderson@linaro.org> References: <20211007195456.1168070-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2607:f8b0:4864:20::42d; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x42d.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: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" The results are generally 6 bit unsigned values, though the count leading and trailing bits may produce any value for a zero input. Signed-off-by: Richard Henderson --- tcg/optimize.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/tcg/optimize.c b/tcg/optimize.c index 1c106bfbc3..678e7c1983 100644 --- a/tcg/optimize.c +++ b/tcg/optimize.c @@ -1216,6 +1216,7 @@ static bool fold_count_zeros(OptContext *ctx, TCGOp *op) g_assert_not_reached(); } ctx->z_mask = arg_info(op->args[2])->z_mask | z_mask; + ctx->s_mask = smask_from_zmask(z_mask); return false; } @@ -1236,6 +1237,7 @@ static bool fold_ctpop(OptContext *ctx, TCGOp *op) default: g_assert_not_reached(); } + ctx->s_mask = smask_from_zmask(ctx->z_mask); return false; } -- 2.25.1