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[Bug rtl-optimization/52417] [4.7 Regression] Infinite recursion in DSE/alias.c
- From: "aoliva at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Thu, 01 Mar 2012 16:58:17 +0000
- Subject: [Bug rtl-optimization/52417] [4.7 Regression] Infinite recursion in DSE/alias.c
- Auto-submitted: auto-generated
- References: <bug-52417-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52417
--- Comment #8 from Alexandre Oliva <aoliva at gcc dot gnu.org> 2012-03-01 16:58:17 UTC ---
Author: aoliva
Date: Thu Mar 1 16:58:11 2012
New Revision: 184750
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=184750
Log:
PR debug/52001
PR rtl-optimization/52417
* cselib.c (cselib_any_perm_equivs): New variable.
(cselib_reset_table): Check that it's not set when not
preserving constants.
(cselib_add_permanent_equiv): Set it.
(cselib_have_permanent_equivalences): New.
(cselib_init, cselib_finish): Reset it.
* cselib.h (cselib_have_permanent_equivalences): Declare.
* alias.c (get_addr): Restore earlier behavior when there
aren't permanent equivalences.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/alias.c
trunk/gcc/cselib.c
trunk/gcc/cselib.h