From patchwork Tue Sep 15 01:19:39 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alan Modra X-Patchwork-Id: 1364020 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=gcc.gnu.org (client-ip=2620:52:3:1:0:246e:9693:128c; helo=sourceware.org; envelope-from=gcc-patches-bounces@gcc.gnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=gcc.gnu.org Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=gcc.gnu.org header.i=@gcc.gnu.org header.a=rsa-sha256 header.s=default header.b=xrV1rHQ8; dkim-atps=neutral Received: from sourceware.org (server2.sourceware.org [IPv6:2620:52:3:1:0:246e:9693:128c]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 4Br55M38gSz9sTC for ; Tue, 15 Sep 2020 11:20:39 +1000 (AEST) Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id 04E043842423; Tue, 15 Sep 2020 01:20:33 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 04E043842423 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1600132833; bh=U1oR8LnbCOVIFP+nVCk/zQRmQUlO0Zn1fM8pq6dFZBo=; h=To:Subject:Date:In-Reply-To:References:List-Id:List-Unsubscribe: List-Archive:List-Post:List-Help:List-Subscribe:From:Reply-To:Cc: From; b=xrV1rHQ84c5caCUwchO1iea1Sxyb3HEoEZc3xwgmXc4LlMI3cf3SzCZaRGKvHOJM1 gmVDZYcTg8gARYIe/n7LCtyhlaUIaYwE5sBmlMB5mjuBJkOOFFANivDG0vNMoeCzDV 3XDqtIBgBFynn//Ix4Wx6S97nwtFNluHBvkAbcLk= X-Original-To: gcc-patches@sourceware.org Delivered-To: gcc-patches@sourceware.org Received: from mail-pj1-x1033.google.com (mail-pj1-x1033.google.com [IPv6:2607:f8b0:4864:20::1033]) by sourceware.org (Postfix) with ESMTPS id AB5683857C42 for ; Tue, 15 Sep 2020 01:20:30 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org AB5683857C42 Received: by mail-pj1-x1033.google.com with SMTP id md22so5897787pjb.0 for ; Mon, 14 Sep 2020 18:20:30 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=U1oR8LnbCOVIFP+nVCk/zQRmQUlO0Zn1fM8pq6dFZBo=; b=QeCLBOxTlQQEkxB8RkyCaJP4ajzHP4qvG+9kQqFO4j4Dz38I+iZH5cZTlFoD29Zgps ONuVkOHM4KNeBzh2s3r8u7mFS1QKC3sLX0wpcMDxlZ1THq4YIgQOmSf4aZfA/78d7w+b eimEBHNKRNl4QG2h0RN8xXNWZbvtbHVdfASb8ndKPxCmPoul84YqaQ6p9ESgV5u++NFk uDqD/q0OoXKZMnSge2iXfJHjL2WJGESngPi3CTzw4cThKeO8z8LMjNB+rHk1DNe2BIv9 fNdhgkZV141rd5ehW6Kzo9Lef0iPr/3D6rqXx8Aur5KWTdyDRh8GVZvGb+45iOMOB6cq S9ag== X-Gm-Message-State: AOAM5312M3VwPaeqQen/vLbKOHnqlNxqEbQBSsrrADGuHsf50jka9+TG 5v7vRdqDUh6s4d3zV8axa60= X-Google-Smtp-Source: ABdhPJyPC/TRMVGLUiysIHx4UN3iS4utwho/Pim5dBodYmf8XyvgAaJymCIlVhFsUyMnZqgttpQRoA== X-Received: by 2002:a17:90a:9f09:: with SMTP id n9mr1909184pjp.88.1600132829873; Mon, 14 Sep 2020 18:20:29 -0700 (PDT) Received: from bubble.grove.modra.org ([2406:3400:51d:8cc0:2474:1d78:84bf:1670]) by smtp.gmail.com with ESMTPSA id e207sm12210851pfh.171.2020.09.14.18.20.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 14 Sep 2020 18:20:29 -0700 (PDT) To: Segher Boessenkool Subject: [RS6000] Count rldimi constant insns Date: Tue, 15 Sep 2020 10:49:39 +0930 Message-Id: <20200915011946.3395-2-amodra@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200915011946.3395-1-amodra@gmail.com> References: <20200915011946.3395-1-amodra@gmail.com> X-Spam-Status: No, score=-9.8 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, FREEMAIL_FROM, GIT_PATCH_0, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: gcc-patches@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Patchwork-Original-From: Alan Modra via Gcc-patches From: Alan Modra Reply-To: Alan Modra Cc: gcc-patches@sourceware.org Errors-To: gcc-patches-bounces@gcc.gnu.org Sender: "Gcc-patches" rldimi is generated by rs6000_emit_set_long_const when the high and low 32 bits of a 64-bit constant are equal. * config/rs6000/rs6000.c (num_insns_constant_gpr): Count rldimi constants correctly. diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c index 20a4ba382bc..6fc86f8185a 100644 --- a/gcc/config/rs6000/rs6000.c +++ b/gcc/config/rs6000/rs6000.c @@ -5731,7 +5731,7 @@ direct_return (void) /* Helper for num_insns_constant. Calculate number of instructions to load VALUE to a single gpr using combinations of addi, addis, ori, - oris and sldi instructions. */ + oris, sldi and rldimi instructions. */ static int num_insns_constant_gpr (HOST_WIDE_INT value) @@ -5759,7 +5759,7 @@ num_insns_constant_gpr (HOST_WIDE_INT value) high >>= 1; - if (low == 0) + if (low == 0 || low == high) return num_insns_constant_gpr (high) + 1; else if (high == 0) return num_insns_constant_gpr (low) + 1;