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[Bug debug/52001] [4.7 Regression] Huge compile-time regression with var-tracking
- 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: Sat, 25 Feb 2012 12:09:48 +0000
- Subject: [Bug debug/52001] [4.7 Regression] Huge compile-time regression with var-tracking
- Auto-submitted: auto-generated
- References: <bug-52001-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52001
--- Comment #6 from Alexandre Oliva <aoliva at gcc dot gnu.org> 2012-02-25 12:09:48 UTC ---
Author: aoliva
Date: Sat Feb 25 12:09:41 2012
New Revision: 184572
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=184572
Log:
PR debug/52001
* alias.c (refs_newer_value_cb, refs_newer_value_p): New.
(get_addr): Walk canonical value's locs. Avoid returning VALUEs
and locs that reference values newer than the non-canonical value
at hand. Return the canonical value as a worst case.
(memrefs_conflict_p): Walk canonical value's locs.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/alias.c