--- Comment #11 from rguenth at gcc dot gnu dot org 2009-02-05 11:10
---
Subject: Bug 39100
Author: rguenth
Date: Thu Feb 5 11:10:02 2009
New Revision: 143961
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=143961
Log:
2009-02-05 Daniel Berlin
Richard Guenther
--- Comment #10 from rguenth at gcc dot gnu dot org 2009-02-05 09:42
---
Fixed. I'm going to do a backport to the 4.3 branch.
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rguenth at gcc dot gnu dot org changed:
What|Removed |Added
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--- Comment #9 from dberlin at gcc dot gnu dot org 2009-02-05 07:10 ---
Subject: Bug 39100
Author: dberlin
Date: Thu Feb 5 07:09:44 2009
New Revision: 143951
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=143951
Log:
2009-02-05 Daniel Berlin
Richard Guenther
--- Comment #8 from rguenth at gcc dot gnu dot org 2009-02-04 21:36 ---
The following works (on the branch, with added NONLOCAL = *NONLOCAL
constraint):
ANYTHING = &ANYTHING
READONLY = &READONLY
ESCAPED = *ESCAPED
ESCAPED = ESCAPED + UNKNOWN
*ESCAPED = NONLOCAL
NONLOCAL = &NONLOCAL
NONL
--- Comment #7 from rguenth at gcc dot gnu dot org 2009-02-04 21:18 ---
Following do_ds_constraint shows
*na_2 = x_1
nl <-
*na_2 = derefaddrtmp.7
nl <- NULL
*na_2 = x_1
NULL <- ESCAPED NONLOCAL
*na_2 = derefaddrtmp.7
NULL <- NULL
where on the lhs of <- we show DELTA and on the rhs
--- Comment #6 from dberlin at gcc dot gnu dot org 2009-02-04 21:16 ---
Subject: Re: [4.4 Regression] -fstrict-aliasing
miscompilation
On Wed, Feb 4, 2009 at 3:59 PM, rguenth at gcc dot gnu dot org
wrote:
>
>
> --- Comment #5 from rguenth at gcc dot gnu dot org 2009-02-0
--- Comment #5 from rguenth at gcc dot gnu dot org 2009-02-04 20:59 ---
On the alias-improvements branch the testcase also fails with
-O -fdelete-null-pointer-checks, so this is definitely a PTA bug.
PTA thinks the points-to set for na_5 is
na_5, is dereferenced, points-to NULL, points-
--- Comment #4 from hjl dot tools at gmail dot com 2009-02-04 20:13 ---
It is caused by revision 136657:
http://gcc.gnu.org/ml/gcc-cvs/2008-06/msg00414.html
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hjl dot tools at gmail dot com changed:
What|Removed |Added
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--- Comment #3 from rguenth at gcc dot gnu dot org 2009-02-04 20:05 ---
Note that the patch only enables us to use PTA results which are likely wrong
here.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39100
--- Comment #2 from rguenth at gcc dot gnu dot org 2009-02-04 20:04 ---
I will have a looksee.
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rguenth at gcc dot gnu dot org changed:
What|Removed |Added
Assi
--- Comment #1 from jakub at gcc dot gnu dot org 2009-02-04 20:04 ---
Caused by http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=136657
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jakub at gcc dot gnu dot org changed:
What|Removed |Added
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pinskia at gcc dot gnu dot org changed:
What|Removed |Added
CC||pinskia at gcc dot gnu dot
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