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From: "gjl at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug debug/52001] [4.7 Regression] Huge compile-time regression with var-tracking
Date: Wed, 29 Feb 2012 11:36:00 -0000	[thread overview]
Message-ID: <bug-52001-4-iXrynglvPL@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-52001-4@http.gcc.gnu.org/bugzilla/>

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52001

Georg-Johann Lay <gjl at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |gjl at gcc dot gnu.org

--- Comment #7 from Georg-Johann Lay <gjl at gcc dot gnu.org> 2012-02-29 11:30:14 UTC ---
(In reply to comment #6)
> 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

This caused PR52417.

With alias.c at r184571 the compiler does not enter infinite loop.


  parent reply	other threads:[~2012-02-29 11:31 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-01-25 20:20 [Bug debug/52001] New: [4.7 reegression] " rsandifo at gcc dot gnu.org
2012-01-25 20:23 ` [Bug debug/52001] " pinskia at gcc dot gnu.org
2012-01-25 20:24 ` pinskia at gcc dot gnu.org
2012-01-26 16:13 ` [Bug debug/52001] [4.7 Regression] " jakub at gcc dot gnu.org
2012-01-27 10:07 ` jakub at gcc dot gnu.org
2012-01-27 10:08 ` jakub at gcc dot gnu.org
2012-02-25 12:11 ` aoliva at gcc dot gnu.org
2012-02-25 12:29 ` aoliva at gcc dot gnu.org
2012-02-29 11:36 ` gjl at gcc dot gnu.org [this message]
2012-03-01 17:00 ` aoliva at gcc dot gnu.org

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