From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 6339 invoked by alias); 7 Apr 2011 08:10:46 -0000 Received: (qmail 6330 invoked by uid 22791); 7 Apr 2011 08:10:45 -0000 X-SWARE-Spam-Status: No, hits=-2.8 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00 X-Spam-Check-By: sourceware.org Received: from localhost (HELO gcc.gnu.org) (127.0.0.1) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Thu, 07 Apr 2011 08:10:40 +0000 From: "vries at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/43920] Choosing conditional execution over conditional branches for code size in some cases. X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: target X-Bugzilla-Keywords: missed-optimization X-Bugzilla-Severity: enhancement X-Bugzilla-Who: vries at gcc dot gnu.org X-Bugzilla-Status: NEW X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated Content-Type: text/plain; charset="UTF-8" MIME-Version: 1.0 Date: Thu, 07 Apr 2011 08:10:00 -0000 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org X-SW-Source: 2011-04/txt/msg00678.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43920 --- Comment #10 from vries at gcc dot gnu.org 2011-04-07 08:10:38 UTC --- Author: vries Date: Thu Apr 7 08:10:34 2011 New Revision: 172090 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=172090 Log: 2011-04-07 Tom de Vries PR target/43920 * cfgcleanup.c (equal_different_set_p, can_replace_by, merge_dir): New function. (old_insns_match_p): Change return type. Replace return false/true with return dir_none/dir_both. Use can_replace_by. (flow_find_cross_jump): Add dir_p parameter. Init replacement direction from dir_p. Register replacement direction in dir, last_dir and afterlast_dir. Handle new return type of old_insns_match_p using merge_dir. Return replacement direction in dir_p. (flow_find_head_matching_sequence, outgoing_edges_match): Handle new return type of old_insns_match_p. (try_crossjump_to_edge): Add argument to call to flow_find_cross_jump. * ifcvt.c ( cond_exec_process_if_block): Add argument to call to flow_find_cross_jump. * basic-block.h (enum replace_direction): New type. (flow_find_cross_jump): Add parameter to declaration. Modified: trunk/gcc/ChangeLog trunk/gcc/basic-block.h trunk/gcc/cfgcleanup.c trunk/gcc/ifcvt.c