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[Bug tree-optimization/33604] [4.3 Regression] Revision 119502 causes significantly slower results with 4.3 compared to 4.2
- From: "rguenth at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 9 Nov 2007 12:32:44 -0000
- Subject: [Bug tree-optimization/33604] [4.3 Regression] Revision 119502 causes significantly slower results with 4.3 compared to 4.2
- References: <bug-33604-15171@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #23 from rguenth at gcc dot gnu dot org 2007-11-09 12:32 -------
Subject: Bug 33604
Author: rguenth
Date: Fri Nov 9 12:32:20 2007
New Revision: 130040
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=130040
Log:
2007-11-09 Richard Guenther <rguenther@suse.de>
PR tree-optimization/33604
* tree-ssa-forwprop.c (tree_ssa_forward_propagate_single_use_vars):
Disregard changes in CV qualifiers of pointed to types for
forward propagating ADDR_EXPRs.
* tree-ssa-ccp.c (fold_stmt_r): Preserve volatileness of the original
expression.
* g++.dg/tree-ssa/pr33604.C: New testcase.
* gcc.dg/pr32721.c: Adjust pattern.
Added:
trunk/gcc/testsuite/g++.dg/tree-ssa/pr33604.C
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.dg/pr32721.c
trunk/gcc/tree-ssa-ccp.c
trunk/gcc/tree-ssa-forwprop.c
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33604