From patchwork Mon Oct 14 11:46:17 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Richard Biener X-Patchwork-Id: 1176276 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-510906-incoming=patchwork.ozlabs.org@gcc.gnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=suse.de Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=gcc.gnu.org header.i=@gcc.gnu.org header.b="paoQ8TEb"; 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 46sGxF597Zz9sPh for ; Mon, 14 Oct 2019 22:46:39 +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:date :from:to:subject:message-id:mime-version:content-type; q=dns; s= default; b=TYam2JbbS3ffJSc6IKKGVA7vSKCmVOOpFXGvzLppBfMeFjGITtFmO HiotCQ7FdW9Dr8eOIDXp5z4iGyk06UWLVq8KcYhq9GQ6cRm8M3yfqlgYOdMRRklF +zoZcoVSjYAEcQ30ePL9LYjXjDANVN7s82PZvydbEFV8gQNvhF1OZo= 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:date :from:to:subject:message-id:mime-version:content-type; s= default; bh=phzfvGYfZE+ULEHy8yjLcHltTSg=; b=paoQ8TEbXdjRiDNT8C/D x3HcjzjhvYO3zAPQL5radL/ceOA053DLT5JSHMXHr9usf0LnUVkx/ZwZtmTpTgYH rIVMUOtllN+6cHtuoL0Xbz3d3D56w/Lt6GrtRy/wJ9zmI496REiR8evcR1/Lw1GP axdJEgVxGlUR3bMX5EBtSaY= Received: (qmail 60828 invoked by alias); 14 Oct 2019 11:46:32 -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 43391 invoked by uid 89); 14 Oct 2019 11:46:20 -0000 Authentication-Results: sourceware.org; auth=none X-Spam-SWARE-Status: No, score=-10.2 required=5.0 tests=AWL, BAYES_00, GIT_PATCH_2, GIT_PATCH_3, KAM_ASCII_DIVIDERS, KAM_NUMSUBJECT, SPF_PASS autolearn=ham version=3.3.1 spammy= X-HELO: mx1.suse.de Received: from mx2.suse.de (HELO mx1.suse.de) (195.135.220.15) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Mon, 14 Oct 2019 11:46:19 +0000 Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 4777FACAA for ; Mon, 14 Oct 2019 11:46:17 +0000 (UTC) Date: Mon, 14 Oct 2019 13:46:17 +0200 (CEST) From: Richard Biener To: gcc-patches@gcc.gnu.org Subject: [PATCH] Fix PR92069 Message-ID: User-Agent: Alpine 2.21 (LSU 202 2017-01-01) MIME-Version: 1.0 This fixes the PR by not setting vect_nested_cycle on the latch def for nested cycles. Bootstrapped and tested on x86_64-unknown-linux-gnu, applied. Richard. 2019-10-14 Richard Biener PR tree-optimization/92069 * tree-vect-loop.c (vect_analyze_scalar_cycles_1): For nested cycles do not set vect_nested_cycle on the latch definition. * gcc.dg/torture/pr92069.c: New testcase. Index: gcc/tree-vect-loop.c =================================================================== --- gcc/tree-vect-loop.c (revision 276950) +++ gcc/tree-vect-loop.c (working copy) @@ -584,7 +584,6 @@ vect_analyze_scalar_cycles_1 (loop_vec_i "Detected vectorizable nested cycle.\n"); STMT_VINFO_DEF_TYPE (stmt_vinfo) = vect_nested_cycle; - STMT_VINFO_DEF_TYPE (reduc_stmt_info) = vect_nested_cycle; } else { Index: gcc/testsuite/gcc.dg/torture/pr92069.c =================================================================== --- gcc/testsuite/gcc.dg/torture/pr92069.c (nonexistent) +++ gcc/testsuite/gcc.dg/torture/pr92069.c (working copy) @@ -0,0 +1,19 @@ +/* { dg-do compile } */ +/* { dg-additional-options "-ftree-vectorize" } */ + +unsigned int a, c, d; +double b; +void e() +{ + for (; d; d++) + { + double f; + a = 2; + for (; a; a++) + { + c = b; + b = f; + f = c; + } + } +}