From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 9631 invoked by alias); 6 Mar 2002 20:36:03 -0000 Mailing-List: contact gcc-prs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Archive: List-Post: List-Help: Sender: gcc-prs-owner@gcc.gnu.org Received: (qmail 9511 invoked by uid 71); 6 Mar 2002 20:36:01 -0000 Resent-Date: 6 Mar 2002 20:36:01 -0000 Resent-Message-ID: <20020306203601.9510.qmail@sources.redhat.com> Resent-From: gcc-gnats@gcc.gnu.org (GNATS Filer) Resent-To: nobody@gcc.gnu.org Resent-Cc: gcc-prs@gcc.gnu.org, gcc-bugs@gcc.gnu.org Resent-Reply-To: gcc-gnats@gcc.gnu.org, Stephane.Carrez@worldnet.fr Received:(qmail 27373 invoked by uid 61); 6 Mar 2002 20:28:15 -0000 Message-Id:<20020306202815.27371.qmail@sources.redhat.com> Date: Wed, 06 Mar 2002 12:36:00 -0000 From: Stephane.Carrez@worldnet.fr Reply-To: Stephane.Carrez@worldnet.fr To: gcc-gnats@gcc.gnu.org X-Send-Pr-Version:gnatsweb-2.9.3 (1.1.1.1.2.31) Subject: optimization/5854: initialize_uninitialized_subregs() breaks HC11/HC12 port X-SW-Source: 2002-03/txt/msg00204.txt.bz2 List-Id: >Number: 5854 >Category: optimization >Synopsis: initialize_uninitialized_subregs() breaks HC11/HC12 port >Confidential: no >Severity: serious >Priority: medium >Responsible: unassigned >State: open >Class: sw-bug >Submitter-Id: net >Arrival-Date: Wed Mar 06 12:36:00 PST 2002 >Closed-Date: >Last-Modified: >Originator: Stephane Carrez >Release: 3_1-20020305 >Organization: >Environment: >Description: The patch: http://gcc.gnu.org/ml/gcc-patches/2001-11/msg01067.html From: Andrew Macleod * rtl.h (initialize_uninitialized_subregs): New prototype. * toplev.c (rest_of_compilation): Call initialize_uninitialized_subregs when optimization is on. * flow.c (find_regno_partial): Find subregs within an expression. (initialize_uninitialized_subregs): Initialize live on entry registers which are used in subreg expressions. creates a regression on m6811 target compared to 3.0.3/3.0.4 It is no longer possible to build the libgcc2 library. Removing or disabling the call to initialize_uninitialized_subregs() solves the problem. >How-To-Repeat: >Fix: >Release-Note: >Audit-Trail: >Unformatted: