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 438C8C433EF for ; Thu, 21 Oct 2021 21:45:04 +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 E1945603E7 for ; Thu, 21 Oct 2021 21:45:03 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org E1945603E7 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]:59594 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mdfry-0007gK-Sn for qemu-devel@archiver.kernel.org; Thu, 21 Oct 2021 17:45:02 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:49314) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mdfJR-00045P-4V for qemu-devel@nongnu.org; Thu, 21 Oct 2021 17:09:24 -0400 Received: from mail-pf1-x435.google.com ([2607:f8b0:4864:20::435]:41916) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1mdfJO-00009f-33 for qemu-devel@nongnu.org; Thu, 21 Oct 2021 17:09:20 -0400 Received: by mail-pf1-x435.google.com with SMTP id y7so1761702pfg.8 for ; Thu, 21 Oct 2021 14:09:17 -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=5G0K+H2e7otmmKQ9zQj4DbcKrZpcr7GS6k3OOPhe8m0=; b=vCm+AY8XgFxNqih386bdjh1udkCg8ZLLYM8SkbeYNOAR48KzWyXJAy2WomEfqNuszo WK6zSBhDz7pkZEImz8D33Px0mn0TKUVcUuKmzg9g3dMhCOB+oy8+LIAwn/g17wcHltOB PfQBKZUyhe9tgFg0AWKRzPlU6BvfPRkSJp4uFCFB9aCggiKKi2K0f0ODdlEDAXmUwqeq FfE6ueRFLOgyMSVPBG3n+aKcnAtZ3ByWwhmQ2SNQWxHvGSJEag9xY5cI0V2brjgzAXJv 6fgJqSBUtvvBd+FgrUnl6J8jV56X9gBdNV0Y+AHZGOG5+qANK5tFQISHTt5cLSAK0P4n fRMA== 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=5G0K+H2e7otmmKQ9zQj4DbcKrZpcr7GS6k3OOPhe8m0=; b=ERTbfpXFjpTLHopRbODMWk8fxg5O03QfdUn2/evJIGt79yGYw/DEZdb4JgLpcN2oLt ytZ5u51GfByi0YBMwySe/qJIeJ1+WRxZpH5W2IQ/0CYAQjGFpNhIoAkdf2Dt+WAe3fVx /6gjZ/bkT8xarGCFcDK8kPe6Wpuy+KhA3vFvdPwBWrr+fHpnwM9I18QJ8iFv1oziHEmm ZuXfbLQLXfyVzgyuyGpLLU2ijFdYYurnWa3ksfxGim00cBmzqNaOddi+ZEphGVV+b1Hj wmjMJlVWmTrEPGRWdodjGFH15+wW7Rpya37IwIlcwPWP4PJ0GnfmAM9jvfXFsGv7zEM4 fCxA== X-Gm-Message-State: AOAM533at+tSayRm/jKOATZshY2yRVT5vFYAaXh/pPlBoj/liCp0sZIb z2NfElSC0gK5O1WqH4flMjHvP4OyAdQ8dA== X-Google-Smtp-Source: ABdhPJzdUl0kY0BTURs85ZX8z2cFCVy2zlb2bKyJbYoFe5iVAPY9GIlJiUbr0ZUn3uhtMKe7tcBOvA== X-Received: by 2002:a05:6a00:124e:b0:44d:cb39:40f6 with SMTP id u14-20020a056a00124e00b0044dcb3940f6mr8092425pfi.22.1634850556758; Thu, 21 Oct 2021 14:09:16 -0700 (PDT) Received: from localhost.localdomain ([71.212.134.125]) by smtp.gmail.com with ESMTPSA id i5sm6258856pgo.36.2021.10.21.14.09.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 21 Oct 2021 14:09:16 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v3 47/48] tcg/optimize: Propagate sign info for bit counting Date: Thu, 21 Oct 2021 14:05:38 -0700 Message-Id: <20211021210539.825582-48-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211021210539.825582-1-richard.henderson@linaro.org> References: <20211021210539.825582-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2607:f8b0:4864:20::435; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x435.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@eldorado.org.br, alex.bennee@linaro.org 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 | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/tcg/optimize.c b/tcg/optimize.c index 64d3256bbc..3dd9219d69 100644 --- a/tcg/optimize.c +++ b/tcg/optimize.c @@ -1215,7 +1215,7 @@ 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(ctx->z_mask); return false; } @@ -1235,6 +1235,7 @@ 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