From patchwork Sun Mar 25 10:46:04 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?q?Thomas_K=C3=B6nig?= X-Patchwork-Id: 890622 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=gcc.gnu.org (client-ip=209.132.180.131; helo=sourceware.org; envelope-from=gcc-patches-return-475424-incoming=patchwork.ozlabs.org@gcc.gnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=tkoenig.net Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=gcc.gnu.org header.i=@gcc.gnu.org header.b="u+qbKb0/"; dkim-atps=neutral Received: from sourceware.org (server1.sourceware.org [209.132.180.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 408DTs22S1z9s0v for ; Sun, 25 Mar 2018 21:46:22 +1100 (AEDT) DomainKey-Signature: a=rsa-sha1; c=nofws; d=gcc.gnu.org; h=list-id :list-unsubscribe:list-archive:list-post:list-help:sender:to :from:subject:message-id:date:mime-version:content-type; q=dns; s=default; b=BklAktIbZdE8mFtFmi0L+8BTjQOvgjddtB8+7dbr6Vy4CU2pmm RGYcf51zGGniLvRTNCcLskEoW3lGSIdBSsB0wewlNbuSaop2VppmJ2kjq/fybXW7 oXitrfH7ymbp67f6rvrQv7uDTr/gL1jNEs7ZC0CFAYDbfnBdTO2PQMvxE= DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=gcc.gnu.org; h=list-id :list-unsubscribe:list-archive:list-post:list-help:sender:to :from:subject:message-id:date:mime-version:content-type; s= default; bh=udkx8yeqfUS8sYxK8PW0Ljp0/CM=; b=u+qbKb0/Wu2d1ZLe5itP YGidRX5oJdasvzvgbcC/0umYGnfdKcazXuhqcwUjpk3V6EQBRTTz1F8ae0vJhLNO 6r0f4Ap3rGqhTiyl0eynRlacw1TuFCURratVdQAs+M+f8kON+XUvAvUs//0fEfuT YoMA6MI26NPLX8SAQ7d2l4s= Received: (qmail 20134 invoked by alias); 25 Mar 2018 10:46:11 -0000 Mailing-List: contact gcc-patches-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Archive: List-Post: List-Help: Sender: gcc-patches-owner@gcc.gnu.org Delivered-To: mailing list gcc-patches@gcc.gnu.org Received: (qmail 20111 invoked by uid 89); 25 Mar 2018 10:46:09 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-11.7 required=5.0 tests=AWL, BAYES_00, GIT_PATCH_2, GIT_PATCH_3, RCVD_IN_DNSWL_LOW, SPF_HELO_PASS autolearn=ham version=3.3.2 spammy=H*r:AUTH, H*r:521, H*r:present, H*r:did X-Spam-User: qpsmtpd, 2 recipients X-HELO: mo4-p05-ob.smtp.rzone.de Received: from mo4-p05-ob.smtp.rzone.de (HELO mo4-p05-ob.smtp.rzone.de) (81.169.146.180) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Sun, 25 Mar 2018 10:46:08 +0000 X-RZG-CLASS-ID: mo05 X-RZG-AUTH: :OGckYUunfvGNVUL0FlRnC4eRM+bOwx0tUtYTrJ/xeZX+ZVZvrbiROUdnM26VdEk= Received: from [192.168.178.68] (xdsl-78-35-138-60.netcologne.de [78.35.138.60]) by smtp.strato.de (RZmta 42.23 DYNA|AUTH) with ESMTPSA id j095d6u2PAk53lI (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (curve secp521r1 with 521 ECDH bits, eq. 15360 bits RSA)) (Client did not present a certificate); Sun, 25 Mar 2018 12:46:05 +0200 (CEST) To: "fortran@gcc.gnu.org" , gcc-patches From: =?utf-8?q?Thomas_K=C3=B6nig?= Subject: [patch, fortran] Simplify constants which come from parameter arrays Message-ID: <430f9caf-8f48-33ab-1218-615138b69c56@tkoenig.net> Date: Sun, 25 Mar 2018 12:46:04 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.6.0 MIME-Version: 1.0 Hello world, the attached patch potentially saves some space in the object file by simplifying access to individual elements of a parameter array, which means that the original parameter may not be needed any more. Regression-tested. OK for trunk? Regards Thomas 2018-03-25 Thomas Koenig PR fortran/51260 * resolve.c (resolve_variable): Simplify cases where access to a parameter array results in a single constant. 2018-03-25 Thomas Koenig PR fortran/51260 * gfortran.dg/parameter_array_element_3.f90: New test. Index: resolve.c =================================================================== --- resolve.c (Revision 258501) +++ resolve.c (Arbeitskopie) @@ -5577,6 +5577,11 @@ resolve_procedure: if (t && flag_coarray == GFC_FCOARRAY_LIB && gfc_is_coindexed (e)) add_caf_get_intrinsic (e); + /* Simplify cases where access to a parameter array results in a + single constant. */ + if (e->rank == 0 && sym->as && sym->attr.flavor == FL_PARAMETER) + gfc_simplify_expr (e, 1); + return t; }