From patchwork Thu Nov 21 01:49:23 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anton Johansson X-Patchwork-Id: 13881558 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 4FEF3D743FC for ; Thu, 21 Nov 2024 01:50:36 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tDwHu-0001d3-4F; Wed, 20 Nov 2024 20:47:18 -0500 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 1tDwHs-0001cW-Qt for qemu-devel@nongnu.org; Wed, 20 Nov 2024 20:47:16 -0500 Received: from rev.ng ([94.130.142.21]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1tDwHr-0004Yh-FL for qemu-devel@nongnu.org; Wed, 20 Nov 2024 20:47:16 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=rev.ng; s=dkim; h=Content-Transfer-Encoding:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive:List-Unsubscribe:List-Unsubscribe-Post: List-Help; bh=unJIN5P7Zmya2tPh5Ef9TFV6DCQ9eVjum3FXEj+KWf4=; b=hg44Pm/3H03AIcO u9ZsqHrLVbm6+bCAOwH8miu34gY1d85fnOnSXpbEIDBKiXKoN8vCLFWlUZBwxEhzNSfCRPB5uyX2e sE4HGk8FPlzkXhCAijHa0OqoZqHmICruu7PjdXPdNyuCXRWFTZOaUvkY3YHOc3NAFHDlbJ5nBUY/s TA=; To: qemu-devel@nongnu.org Cc: ale@rev.ng, ltaylorsimpson@gmail.com, bcain@quicinc.com, richard.henderson@linaro.org, philmd@linaro.org, alex.bennee@linaro.org Subject: [RFC PATCH v1 19/43] helper-to-tcg: Pipeline, run optimization pass Date: Thu, 21 Nov 2024 02:49:23 +0100 Message-ID: <20241121014947.18666-20-anjo@rev.ng> In-Reply-To: <20241121014947.18666-1-anjo@rev.ng> References: <20241121014947.18666-1-anjo@rev.ng> MIME-Version: 1.0 Received-SPF: pass client-ip=94.130.142.21; envelope-from=anjo@rev.ng; helo=rev.ng 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_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_PASS=-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: , Reply-to: Anton Johansson X-Patchwork-Original-From: Anton Johansson via From: Anton Johansson Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Run a standard LLVM -Os optimization pass, which makes up the bulk of optimizations in helper-to-tcg. Signed-off-by: Anton Johansson --- subprojects/helper-to-tcg/pipeline/Pipeline.cpp | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/subprojects/helper-to-tcg/pipeline/Pipeline.cpp b/subprojects/helper-to-tcg/pipeline/Pipeline.cpp index dde3641ab3..a26b7a7350 100644 --- a/subprojects/helper-to-tcg/pipeline/Pipeline.cpp +++ b/subprojects/helper-to-tcg/pipeline/Pipeline.cpp @@ -188,5 +188,17 @@ int main(int argc, char **argv) MPM.addPass(createModuleToFunctionPassAdaptor(std::move(FPM))); } + // + // Run a -Os optimization pass. In general -Os will prefer loop + // vectorization over unrolling, as compared to -O3. In TCG, this + // translates to more utilization of gvec and possibly smaller TBs. + // + + // Optimization passes + MPM.addPass(PB.buildModuleSimplificationPipeline( + compat::OptimizationLevel::Os, compat::LTOPhase)); + MPM.addPass( + PB.buildModuleOptimizationPipeline(compat::OptimizationLevel::Os)); + return 0; }