From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 20249 invoked by alias); 7 Jan 2014 16:49:35 -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 Received: (qmail 19658 invoked by uid 55); 7 Jan 2014 16:49:30 -0000 From: "jakub at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug middle-end/59470] [4.8 Regression] libstdc++ miscompilation after r205709 Date: Tue, 07 Jan 2014 16:49:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: middle-end X-Bugzilla-Version: 4.8.3 X-Bugzilla-Keywords: wrong-code X-Bugzilla-Severity: normal X-Bugzilla-Who: jakub at gcc dot gnu.org X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Priority: P1 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: 4.8.3 X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-SW-Source: 2014-01/txt/msg00675.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59470 --- Comment #25 from Jakub Jelinek --- Author: jakub Date: Tue Jan 7 16:49:22 2014 New Revision: 206396 URL: http://gcc.gnu.org/viewcvs?rev=206396&root=gcc&view=rev Log: Backported from mainline 2013-12-16 Jakub Jelinek PR middle-end/58956 PR middle-end/59470 * gimple.h (walk_stmt_load_store_addr_fn): New typedef. (walk_stmt_load_store_addr_ops, walk_stmt_load_store_ops): Use it for callback params. * gimple.c (walk_stmt_load_store_ops): Likewise. (walk_stmt_load_store_addr_ops): Likewise. Adjust all callback calls to supply the gimple operand containing the base tree as an extra argument. * tree-ssa-ter.c (find_ssaname, find_ssaname_in_store): New helper functions. (find_replaceable_in_bb): For calls or GIMPLE_ASM, only set same_root_var if USE is used somewhere in the stores of the stmt. * ipa-prop.c (visit_ref_for_mod_analysis): Remove name of the stmt argument and ATTRIBUTE_UNUSED, add another unnamed tree argument. * ipa-pure-const.c (check_load, check_store, check_ipa_load, check_ipa_store): Likewise. * gimple.c (gimple_ior_addresses_taken_1): Likewise. * ipa-split.c (test_nonssa_use, mark_nonssa_use): Likewise. (verify_non_ssa_vars, visit_bb): Adjust their callers. * cfgexpand.c (add_scope_conflicts_1): Use walk_stmt_load_store_addr_fn type for visit variable. (visit_op, visit_conflict): Remove name of the stmt argument and ATTRIBUTE_UNUSED, add another unnamed tree argument. * tree-sra.c (asm_visit_addr): Likewise. Remove name of the data argument and ATTRIBUTE_UNUSED. * cgraphbuild.c (mark_address, mark_load, mark_store): Add another unnamed tree argument. * gcc.target/i386/pr59470.c: New test. Added: branches/gcc-4_8-branch/gcc/testsuite/gcc.target/i386/pr59470.c Modified: branches/gcc-4_8-branch/gcc/ChangeLog branches/gcc-4_8-branch/gcc/cfgexpand.c branches/gcc-4_8-branch/gcc/cgraphbuild.c branches/gcc-4_8-branch/gcc/gimple.c branches/gcc-4_8-branch/gcc/gimple.h branches/gcc-4_8-branch/gcc/ipa-prop.c branches/gcc-4_8-branch/gcc/ipa-pure-const.c branches/gcc-4_8-branch/gcc/ipa-split.c branches/gcc-4_8-branch/gcc/testsuite/ChangeLog branches/gcc-4_8-branch/gcc/tree-sra.c branches/gcc-4_8-branch/gcc/tree-ssa-ter.c