From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 2153) id 9B650398C823; Thu, 17 Sep 2020 16:51:03 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 9B650398C823 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1600361463; bh=Y/OKFabgY/g2jEPnrf4a5EjnGZly271P8W0BUJj2J2c=; h=From:To:Subject:Date:From; b=orECuoTXFASgN8iSjImamvvb2R/G6u9jIb1uwTXMNGfr4ZG12JJtk67phZiTU5kqg CI9JXg1grraJwuntgeupd4ek4ntIU3suxls6sALAf+TOhwtpTGyAkW3Yw4m4aDZu+A iCmD1rICpMsUNpcVUVzOiULHkmUjsNqylsuR5hTA= Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit From: Jakub Jelinek To: gcc-cvs@gcc.gnu.org Subject: [gcc(refs/vendors/redhat/heads/gcc-8-branch)] tree-optimization/94163 constrain alignment set by PRE X-Act-Checkin: gcc X-Git-Author: Richard Biener X-Git-Refname: refs/vendors/redhat/heads/gcc-8-branch X-Git-Oldrev: df80a9cfe836363a8c7405f482b00931ec4b5d88 X-Git-Newrev: 96757464c3d07e727767fe11d198c07151971135 Message-Id: <20200917165103.9B650398C823@sourceware.org> Date: Thu, 17 Sep 2020 16:51:03 +0000 (GMT) X-BeenThere: gcc-cvs@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-cvs mailing list List-Unsubscribe: , List-Archive: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 17 Sep 2020 16:51:03 -0000 https://gcc.gnu.org/g:96757464c3d07e727767fe11d198c07151971135 commit 96757464c3d07e727767fe11d198c07151971135 Author: Richard Biener Date: Fri Mar 13 13:56:26 2020 +0100 tree-optimization/94163 constrain alignment set by PRE This avoids HWI -> unsigned truncation to end up with zero alignment which set_ptr_info_alignment ICEs on. 2020-03-13 Richard Biener PR tree-optimization/94163 * tree-ssa-pre.c (create_expression_by_pieces): Check whether alignment would be zero. Diff: --- gcc/ChangeLog | 6 ++++++ gcc/tree-ssa-pre.c | 3 ++- 2 files changed, 8 insertions(+), 1 deletion(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 45670c3e20d..2f80eff858a 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2020-03-13 Richard Biener + + PR tree-optimization/94163 + * tree-ssa-pre.c (create_expression_by_pieces): Check + whether alignment would be zero. + 2019-03-13 Eric Botcazou PR rtl-optimization/94119 diff --git a/gcc/tree-ssa-pre.c b/gcc/tree-ssa-pre.c index 5f9dc50eef6..7f7e4173302 100644 --- a/gcc/tree-ssa-pre.c +++ b/gcc/tree-ssa-pre.c @@ -2797,7 +2797,8 @@ create_expression_by_pieces (basic_block block, pre_expr expr, unsigned HOST_WIDE_INT hmisalign = args.length () == 3 ? tree_to_uhwi (args[2]) : 0; if ((halign & (halign - 1)) == 0 - && (hmisalign & ~(halign - 1)) == 0) + && (hmisalign & ~(halign - 1)) == 0 + && (unsigned int)halign != 0) set_ptr_info_alignment (get_ptr_info (forcedname), halign, hmisalign); }