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* [Bug tree-optimization/38261] New: [4.4 regression] gcc.dg/torture/ipa-pta-1.c & gcc.dg/tree-ssa/alias-2.c fail with -fpic/-fPIC
@ 2008-11-25 15:49 ghazi at gcc dot gnu dot org
2008-11-25 16:33 ` [Bug tree-optimization/38261] [4.4 Regression] " rguenth at gcc dot gnu dot org
` (5 more replies)
0 siblings, 6 replies; 7+ messages in thread
From: ghazi at gcc dot gnu dot org @ 2008-11-25 15:49 UTC (permalink / raw)
To: gcc-bugs
The testcases gcc.dg/torture/ipa-pta-1.c and gcc.dg/tree-ssa/alias-2.c used to
work with -fpic/-fPIC on the trunk, but now fail. The alias-2.c testcase
worked in 4.2, 4.3 with -fpic/-fPIC also, and the testcase doesn't appear to
have changed. I think ipa-pta-1.c was added only on the trunk a few months ago
so there's no comparison with previous releases, however it did work on the
trunk up until very recently.
They both passed here:
http://gcc.gnu.org/ml/gcc-testresults/2008-11/msg01383.html
And they both started failing here:
http://gcc.gnu.org/ml/gcc-testresults/2008-11/msg01516.html
Based on the timing, I suspect that the cause is related.
--
Summary: [4.4 regression] gcc.dg/torture/ipa-pta-1.c &
gcc.dg/tree-ssa/alias-2.c fail with -fpic/-fPIC
Product: gcc
Version: 4.4.0
Status: UNCONFIRMED
Keywords: missed-optimization
Severity: normal
Priority: P3
Component: tree-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: ghazi at gcc dot gnu dot org
GCC target triplet: x86_64-*-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38261
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/38261] [4.4 Regression] gcc.dg/torture/ipa-pta-1.c & gcc.dg/tree-ssa/alias-2.c fail with -fpic/-fPIC
2008-11-25 15:49 [Bug tree-optimization/38261] New: [4.4 regression] gcc.dg/torture/ipa-pta-1.c & gcc.dg/tree-ssa/alias-2.c fail with -fpic/-fPIC ghazi at gcc dot gnu dot org
@ 2008-11-25 16:33 ` rguenth at gcc dot gnu dot org
2008-11-25 16:38 ` hjl dot tools at gmail dot com
` (4 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2008-11-25 16:33 UTC (permalink / raw)
To: gcc-bugs
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[4.4 regression] |[4.4 Regression]
|gcc.dg/torture/ipa-pta-1.c &|gcc.dg/torture/ipa-pta-1.c &
|gcc.dg/tree-ssa/alias-2.c |gcc.dg/tree-ssa/alias-2.c
|fail with -fpic/-fPIC |fail with -fpic/-fPIC
Target Milestone|--- |4.4.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38261
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/38261] [4.4 Regression] gcc.dg/torture/ipa-pta-1.c & gcc.dg/tree-ssa/alias-2.c fail with -fpic/-fPIC
2008-11-25 15:49 [Bug tree-optimization/38261] New: [4.4 regression] gcc.dg/torture/ipa-pta-1.c & gcc.dg/tree-ssa/alias-2.c fail with -fpic/-fPIC ghazi at gcc dot gnu dot org
2008-11-25 16:33 ` [Bug tree-optimization/38261] [4.4 Regression] " rguenth at gcc dot gnu dot org
@ 2008-11-25 16:38 ` hjl dot tools at gmail dot com
2008-11-27 17:01 ` ghazi at gcc dot gnu dot org
` (3 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: hjl dot tools at gmail dot com @ 2008-11-25 16:38 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from hjl dot tools at gmail dot com 2008-11-25 16:37 -------
Can you use ./contrib/gcc_update to update your gcc source tree
so that we can tell which revisions you are using? Thanks.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38261
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/38261] [4.4 Regression] gcc.dg/torture/ipa-pta-1.c & gcc.dg/tree-ssa/alias-2.c fail with -fpic/-fPIC
2008-11-25 15:49 [Bug tree-optimization/38261] New: [4.4 regression] gcc.dg/torture/ipa-pta-1.c & gcc.dg/tree-ssa/alias-2.c fail with -fpic/-fPIC ghazi at gcc dot gnu dot org
2008-11-25 16:33 ` [Bug tree-optimization/38261] [4.4 Regression] " rguenth at gcc dot gnu dot org
2008-11-25 16:38 ` hjl dot tools at gmail dot com
@ 2008-11-27 17:01 ` ghazi at gcc dot gnu dot org
2008-11-28 10:05 ` jakub at gcc dot gnu dot org
` (2 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: ghazi at gcc dot gnu dot org @ 2008-11-27 17:01 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from ghazi at gcc dot gnu dot org 2008-11-27 16:59 -------
(In reply to comment #1)
> Can you use ./contrib/gcc_update to update your gcc source tree
> so that we can tell which revisions you are using? Thanks.
Done, however it only works for 4.3 and trunk, not 4.2. I assume that's
intentional, i.e. the mechanism in gcc_update never got backported for the 4.2
branch?
--
ghazi at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
Last reconfirmed|0000-00-00 00:00:00 |2008-11-27 16:59:45
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38261
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/38261] [4.4 Regression] gcc.dg/torture/ipa-pta-1.c & gcc.dg/tree-ssa/alias-2.c fail with -fpic/-fPIC
2008-11-25 15:49 [Bug tree-optimization/38261] New: [4.4 regression] gcc.dg/torture/ipa-pta-1.c & gcc.dg/tree-ssa/alias-2.c fail with -fpic/-fPIC ghazi at gcc dot gnu dot org
` (2 preceding siblings ...)
2008-11-27 17:01 ` ghazi at gcc dot gnu dot org
@ 2008-11-28 10:05 ` jakub at gcc dot gnu dot org
2008-11-28 10:14 ` [Bug testsuite/38261] " jakub at gcc dot gnu dot org
2008-11-28 10:53 ` jakub at gcc dot gnu dot org
5 siblings, 0 replies; 7+ messages in thread
From: jakub at gcc dot gnu dot org @ 2008-11-28 10:05 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from jakub at gcc dot gnu dot org 2008-11-28 10:03 -------
ipa-pta-1.c fails since:
http://gcc.gnu.org/ml/gcc-patches/2008-11/msg00727.html
with -fpic, but gcc is correct and the testcase should be adjusted, it can't
assume the globally available functions will not be overridden.
Ditto for alias-2.c.
--
jakub at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|unassigned at gcc dot gnu |jakub at gcc dot gnu dot org
|dot org |
Status|NEW |ASSIGNED
Last reconfirmed|2008-11-27 16:59:45 |2008-11-28 10:03:49
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38261
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug testsuite/38261] [4.4 Regression] gcc.dg/torture/ipa-pta-1.c & gcc.dg/tree-ssa/alias-2.c fail with -fpic/-fPIC
2008-11-25 15:49 [Bug tree-optimization/38261] New: [4.4 regression] gcc.dg/torture/ipa-pta-1.c & gcc.dg/tree-ssa/alias-2.c fail with -fpic/-fPIC ghazi at gcc dot gnu dot org
` (3 preceding siblings ...)
2008-11-28 10:05 ` jakub at gcc dot gnu dot org
@ 2008-11-28 10:14 ` jakub at gcc dot gnu dot org
2008-11-28 10:53 ` jakub at gcc dot gnu dot org
5 siblings, 0 replies; 7+ messages in thread
From: jakub at gcc dot gnu dot org @ 2008-11-28 10:14 UTC (permalink / raw)
To: gcc-bugs
------- Comment #4 from jakub at gcc dot gnu dot org 2008-11-28 10:12 -------
Subject: Bug 38261
Author: jakub
Date: Fri Nov 28 10:11:18 2008
New Revision: 142256
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=142256
Log:
PR testsuite/38261
* gcc.dg/tree-ssa/alias-2.c: Only compile on nonpic targets.
* gcc.dg/torture/ipa-pta-1.c: Likewise.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.dg/torture/ipa-pta-1.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/alias-2.c
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38261
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug testsuite/38261] [4.4 Regression] gcc.dg/torture/ipa-pta-1.c & gcc.dg/tree-ssa/alias-2.c fail with -fpic/-fPIC
2008-11-25 15:49 [Bug tree-optimization/38261] New: [4.4 regression] gcc.dg/torture/ipa-pta-1.c & gcc.dg/tree-ssa/alias-2.c fail with -fpic/-fPIC ghazi at gcc dot gnu dot org
` (4 preceding siblings ...)
2008-11-28 10:14 ` [Bug testsuite/38261] " jakub at gcc dot gnu dot org
@ 2008-11-28 10:53 ` jakub at gcc dot gnu dot org
5 siblings, 0 replies; 7+ messages in thread
From: jakub at gcc dot gnu dot org @ 2008-11-28 10:53 UTC (permalink / raw)
To: gcc-bugs
------- Comment #5 from jakub at gcc dot gnu dot org 2008-11-28 10:51 -------
Fixed.
--
jakub at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38261
^ permalink raw reply [flat|nested] 7+ messages in thread
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2008-11-25 15:49 [Bug tree-optimization/38261] New: [4.4 regression] gcc.dg/torture/ipa-pta-1.c & gcc.dg/tree-ssa/alias-2.c fail with -fpic/-fPIC ghazi at gcc dot gnu dot org
2008-11-25 16:33 ` [Bug tree-optimization/38261] [4.4 Regression] " rguenth at gcc dot gnu dot org
2008-11-25 16:38 ` hjl dot tools at gmail dot com
2008-11-27 17:01 ` ghazi at gcc dot gnu dot org
2008-11-28 10:05 ` jakub at gcc dot gnu dot org
2008-11-28 10:14 ` [Bug testsuite/38261] " jakub at gcc dot gnu dot org
2008-11-28 10:53 ` jakub at gcc dot gnu dot org
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