From patchwork Tue Oct 26 23:09:36 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Richard Henderson X-Patchwork-Id: 1546689 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: bilbo.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=linaro.org header.i=@linaro.org header.a=rsa-sha256 header.s=google header.b=r9yHUsvz; dkim-atps=neutral Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) 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 bilbo.ozlabs.org (Postfix) with ESMTPS id 4Hf7wf1HyLz9sXS for ; Wed, 27 Oct 2021 10:54:58 +1100 (AEDT) Received: from localhost ([::1]:42290 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mfWHP-0005Pm-W5 for incoming@patchwork.ozlabs.org; Tue, 26 Oct 2021 19:54:56 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:53914) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mfVdI-00007d-QE for qemu-devel@nongnu.org; Tue, 26 Oct 2021 19:13:30 -0400 Received: from mail-pj1-x102c.google.com ([2607:f8b0:4864:20::102c]:41745) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1mfVdH-00036k-DS for qemu-devel@nongnu.org; Tue, 26 Oct 2021 19:13:28 -0400 Received: by mail-pj1-x102c.google.com with SMTP id na16-20020a17090b4c1000b0019f5bb661f9so692740pjb.0 for ; Tue, 26 Oct 2021 16:13:26 -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=/NZkowD6C8yX465pZ6nDRR+ZC3z4EscWFPRhl5q7Pl8=; b=r9yHUsvzHOyfPO32p/wVt5uO/7ixnfsrhFZcqNuX1c7EVUKoZ8D9KC5jJvWINYDISW oNxQAoWSXWhONSAFyHXp4ry2IpJWz4g4j7RDRfJ8ZIBGGxWRWyUop44UD4YoOu6JSIam MI4P7kCsvSgKwdFLnvf6lgjXdPs1EbEMEXN+QLsxQ4yx8L8DKG7GwLM6eS3vFsMxkwsG TzJpjbCXbiatBn4OQxIhcLXEjf8Id2AzgmlbD+512jqOOH+kJgOtywoJDYWalxAVxWjr jldhBdMRGSXgjelUct4TbV2pFvTvYx2I7rDdS0zEcMt8McdMG7M/FVw+RAokqYBwHBnL Wl0Q== 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=/NZkowD6C8yX465pZ6nDRR+ZC3z4EscWFPRhl5q7Pl8=; b=tYB9OEWvAVbyPMUusv5RYve5hYNxcHfeO2w9c8p2Vxf9P22c13klHZqxpL56o3oIpH 8451dG8hoNb9K6Zt4pdSQui80+9MKWdP6jUxLOfT/9g1+gZu+1p6F7ECEZTMagcZxlO5 4i8i97SqzA3QPh2sdo6guWEpD53BSvfdZ1mcfTpYOb8NTLqvxpNnQN8xiLuJo2rUtNDF iqlSwngmP7EgPt5GkTexY1LUjnj5nwTZvUweH2cndB5Z0PMNYJFt2QtBmapJSid6Rwio 475zdQdGRnSw1TPCWGCrxDXcCjn0eCkohlRCnj2CNwCLifZ+91pVEM2z+wiZWIZ44djq sP5g== X-Gm-Message-State: AOAM531pLrIH1Yp/uQQDenn79DGTQmkt7kYdOtK4HdLlVQnGiuuZyF5s lrF8uel4eP2a5OKOszvQsOSDidFnd3NHvQ== X-Google-Smtp-Source: ABdhPJwB7OUm9/PlnMrwtYHokggcL09y0GFkjoHISd0mcQ6yNnxF4CEy4L7gXn0UQ46YYrlkULO1dw== X-Received: by 2002:a17:90a:4e42:: with SMTP id t2mr1987974pjl.108.1635290005967; Tue, 26 Oct 2021 16:13:25 -0700 (PDT) Received: from localhost.localdomain ([71.212.134.125]) by smtp.gmail.com with ESMTPSA id d6sm24158122pfa.39.2021.10.26.16.13.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 26 Oct 2021 16:13:25 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v4 44/51] tcg/optimize: Use fold_xi_to_x for mul Date: Tue, 26 Oct 2021 16:09:36 -0700 Message-Id: <20211026230943.1225890-45-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211026230943.1225890-1-richard.henderson@linaro.org> References: <20211026230943.1225890-1-richard.henderson@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::102c; envelope-from=richard.henderson@linaro.org; helo=mail-pj1-x102c.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, f4bug@amsat.org Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Recognize the identity function for low-part multiply. Suggested-by: Luis Pires Signed-off-by: Richard Henderson Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Luis Pires --- tcg/optimize.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/tcg/optimize.c b/tcg/optimize.c index bea82305db..fe2b1eb18e 100644 --- a/tcg/optimize.c +++ b/tcg/optimize.c @@ -1460,7 +1460,8 @@ static bool fold_movcond(OptContext *ctx, TCGOp *op) static bool fold_mul(OptContext *ctx, TCGOp *op) { if (fold_const2(ctx, op) || - fold_xi_to_i(ctx, op, 0)) { + fold_xi_to_i(ctx, op, 0) || + fold_xi_to_x(ctx, op, 1)) { return true; } return false;