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* [Bug optimization/11083] New: [3.3 regression] ICE in commit_one_edge_insertion, at cfgrtl.c:1438 with -O2 -fnon-call-exceptions
@ 2003-06-04 1:08 nick@ilm.com
2003-06-04 1:11 ` [Bug optimization/11083] " nick@ilm.com
` (5 more replies)
0 siblings, 6 replies; 7+ messages in thread
From: nick@ilm.com @ 2003-06-04 1:08 UTC (permalink / raw)
To: gcc-bugs
PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11083
Summary: [3.3 regression] ICE in commit_one_edge_insertion, at
cfgrtl.c:1438 with -O2 -fnon-call-exceptions
Product: gcc
Version: 3.3
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: optimization
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: nick@ilm.com
CC: gcc-bugs@gcc.gnu.org
GCC build triplet: i686-pc-linux-gnu
GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu
With -O2 -fnon-call-exceptions, the following code causes an ICE
in g++ 3.3:
#include <vector>
class B { public: B (const std::vector<int> &a); std::vector<int> _a; };
B::B(const std::vector<int> &a) { _a = a; }
adding -fno-gcse causes the ICE to disappear. This code snippet works
in gcc-3.2.3 gcc-3.0.4 and gcc-3.4 (cvs head)
preprocessed source from gcc-3.3 will be attached to the PR
-nick
> /dept/rnd/vendor/gcc-3.3/bin/g++ -v -O2 -fnon-call-exceptions ~/gcse-non-call.C
Reading specs from /dept/rnd/vendor/gcc-3.3/lib/gcc-lib/i686-pc-linux-gnu/3.3/specs
Configured with: ../gcc-3.3/configure --prefix=/dept/rnd/vendor/gcc-3.3
--enable-threads --enable-languages=c,c++
Thread model: posix
gcc version 3.3
/dept/rnd/vendor/gcc-3.3/lib/gcc-lib/i686-pc-linux-gnu/3.3/cc1plus -quiet -v
-D__GNUC__=3 -D__GNUC_MINOR__=3 -D__GNUC_PATCHLEVEL__=0 -D_GNU_SOURCE
/home/nick/gcse-non-call.C -D__GNUG__=3 -quiet -dumpbase gcse-non-call.C
-auxbase gcse-non-call -O2 -version -fnon-call-exceptions -o /usr/tmp/ccaMSo6V.s
GNU C++ version 3.3 (i686-pc-linux-gnu)
compiled by GNU C version 2.96 20000731 (Red Hat Linux 7.1 2.96-98).
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
ignoring nonexistent directory "/dept/rnd/vendor/gcc-3.3/i686-pc-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/dept/rnd/vendor/gcc-3.3/include/c++/3.3
/dept/rnd/vendor/gcc-3.3/include/c++/3.3/i686-pc-linux-gnu
/dept/rnd/vendor/gcc-3.3/include/c++/3.3/backward
/usr/local/include
/dept/rnd/vendor/gcc-3.3/include
/dept/rnd/vendor/gcc-3.3/lib/gcc-lib/i686-pc-linux-gnu/3.3/include
/usr/include
End of search list.
/dept/rnd/vendor/gcc-3.3/include/c++/3.3/bits/vector.tcc: In member function `
std::vector<_Tp, _Alloc>& std::vector<_Tp, _Alloc>::operator=(const
std::vector<_Tp, _Alloc>&) [with _Tp = int, _Alloc = std::allocator<int>]':
/home/nick/gcse-non-call.C:3: instantiated from here
/dept/rnd/vendor/gcc-3.3/include/c++/3.3/bits/vector.tcc:152: internal compiler
error: in
commit_one_edge_insertion, at cfgrtl.c:1438
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^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug optimization/11083] [3.3 regression] ICE in commit_one_edge_insertion, at cfgrtl.c:1438 with -O2 -fnon-call-exceptions
2003-06-04 1:08 [Bug optimization/11083] New: [3.3 regression] ICE in commit_one_edge_insertion, at cfgrtl.c:1438 with -O2 -fnon-call-exceptions nick@ilm.com
@ 2003-06-04 1:11 ` nick@ilm.com
2003-06-04 2:32 ` bangerth@dealii.org
` (4 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: nick@ilm.com @ 2003-06-04 1:11 UTC (permalink / raw)
To: gcc-bugs
PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11083
------- Additional Comments From nick@ilm.com 2003-06-04 01:11 -------
Created an attachment (id=4157)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=4157&action=view)
preprocessed source which triggers the ice with gcc 3.3 (bzip2)
run with:
g++ -O2 -fnon-call-exceptions -c gcse-non-call.ii
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^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug optimization/11083] [3.3 regression] ICE in commit_one_edge_insertion, at cfgrtl.c:1438 with -O2 -fnon-call-exceptions
2003-06-04 1:08 [Bug optimization/11083] New: [3.3 regression] ICE in commit_one_edge_insertion, at cfgrtl.c:1438 with -O2 -fnon-call-exceptions nick@ilm.com
2003-06-04 1:11 ` [Bug optimization/11083] " nick@ilm.com
@ 2003-06-04 2:32 ` bangerth@dealii.org
2003-06-23 23:11 ` janis187 at us dot ibm dot com
` (3 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: bangerth@dealii.org @ 2003-06-04 2:32 UTC (permalink / raw)
To: gcc-bugs
PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11083
bangerth@dealii.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Severity|normal |critical
Status|UNCONFIRMED |NEW
Ever Confirmed| |1
Priority|P2 |P1
Last reconfirmed|0000-00-00 00:00:00 |2003-06-04 02:32:28
date| |
Target Milestone|3.4 |3.3.1
------- Additional Comments From bangerth@dealii.org 2003-06-04 02:32 -------
What a nasty bug -- only 11000 lines in the preprocessed sources and still
so hard to track down...
Here's a cut-down:
-------------------------------------------
extern void *memmove (void *, const void *, unsigned int) throw ();
struct S {
int * q;
S(int * i) : q(i) { }
};
struct X {
int *p;
void foo(S first, S last) {
try { memmove(0, 0, last.q - first.q); }
catch(...) { throw; }
}
void bar (const X& x);
};
void X::bar (const X& x) {
const unsigned int xlen = S(x.p).q-S(x.p).q;
if (xlen > 0)
foo(S(x.p).q, S(x.p).q);
}
------------------------------
g/x> /home/bangerth/bin/gcc-3.3-pre/bin/c++ -c y.cc -O2 -fnon-call-exceptions
y.cc: In member function `void X::bar(const X&)':
y.cc:23: internal compiler error: in commit_one_edge_insertion, at cfgrtl.c:
1438
Please submit a full bug report,
with preprocessed source if appropriate.
This works with 3.2.3 and mainline, but ICEs as above with 3.3.
W.
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^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug optimization/11083] [3.3 regression] ICE in commit_one_edge_insertion, at cfgrtl.c:1438 with -O2 -fnon-call-exceptions
2003-06-04 1:08 [Bug optimization/11083] New: [3.3 regression] ICE in commit_one_edge_insertion, at cfgrtl.c:1438 with -O2 -fnon-call-exceptions nick@ilm.com
2003-06-04 1:11 ` [Bug optimization/11083] " nick@ilm.com
2003-06-04 2:32 ` bangerth@dealii.org
@ 2003-06-23 23:11 ` janis187 at us dot ibm dot com
2003-07-08 12:03 ` ebotcazou at gcc dot gnu dot org
` (2 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: janis187 at us dot ibm dot com @ 2003-06-23 23:11 UTC (permalink / raw)
To: gcc-bugs
PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11083
------- Additional Comments From janis187 at us dot ibm dot com 2003-06-23 23:02 -------
The regression in 11083 was introduced or exposed with this patch:
2002-06-13 Jeffrey Law <law@redhat.com>
* gcse.c (delete_null_pointer_checks_1): Inform caller if any
null pointer checks were eliminated. Update prototype.
(delete_null_pointer_checks): Similarly.
* rtl.h (delete_null_pointer_checks): Update prototype.
* toplev.c (rest_of_compilation): Only run cleanup_cfg if
delete_null_pointer_checks deletes one or more null
pointer checks. Do not run cleanup_cfg before gcse, the
CFG is accurate and optimized at that point.
The regression hunt used the minimized test case from comment #2 on
i686-pc-linux-gnu, compiled with -O2 -fnon-call-exceptions.
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug optimization/11083] [3.3 regression] ICE in commit_one_edge_insertion, at cfgrtl.c:1438 with -O2 -fnon-call-exceptions
2003-06-04 1:08 [Bug optimization/11083] New: [3.3 regression] ICE in commit_one_edge_insertion, at cfgrtl.c:1438 with -O2 -fnon-call-exceptions nick@ilm.com
` (2 preceding siblings ...)
2003-06-23 23:11 ` janis187 at us dot ibm dot com
@ 2003-07-08 12:03 ` ebotcazou at gcc dot gnu dot org
2003-07-18 6:59 ` cvs-commit at gcc dot gnu dot org
2003-07-18 7:03 ` ebotcazou at gcc dot gnu dot org
5 siblings, 0 replies; 7+ messages in thread
From: ebotcazou at gcc dot gnu dot org @ 2003-07-08 12:03 UTC (permalink / raw)
To: gcc-bugs
PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11083
ebotcazou at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|unassigned at gcc dot gnu |ebotcazou at gcc dot gnu dot
|dot org |org
Status|NEW |ASSIGNED
------- Additional Comments From ebotcazou at gcc dot gnu dot org 2003-07-08 12:03 -------
Not a specialist of the subject, but trying to fix anyway.
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug optimization/11083] [3.3 regression] ICE in commit_one_edge_insertion, at cfgrtl.c:1438 with -O2 -fnon-call-exceptions
2003-06-04 1:08 [Bug optimization/11083] New: [3.3 regression] ICE in commit_one_edge_insertion, at cfgrtl.c:1438 with -O2 -fnon-call-exceptions nick@ilm.com
` (3 preceding siblings ...)
2003-07-08 12:03 ` ebotcazou at gcc dot gnu dot org
@ 2003-07-18 6:59 ` cvs-commit at gcc dot gnu dot org
2003-07-18 7:03 ` ebotcazou at gcc dot gnu dot org
5 siblings, 0 replies; 7+ messages in thread
From: cvs-commit at gcc dot gnu dot org @ 2003-07-18 6:59 UTC (permalink / raw)
To: gcc-bugs
PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11083
------- Additional Comments From cvs-commit at gcc dot gnu dot org 2003-07-18 06:59 -------
Subject: Bug 11083
CVSROOT: /cvs/gcc
Module name: gcc
Branch: gcc-3_3-branch
Changes by: ebotcazou@gcc.gnu.org 2003-07-18 06:59:24
Modified files:
gcc : ChangeLog toplev.c
gcc/testsuite : ChangeLog
Added files:
gcc/testsuite/g++.dg/opt: cfg1.C
Log message:
PR optimization/11083
* toplev.c (rest_of_compilation): Delete unreachable blocks
if dead edges were purged after the addressof pass.
Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-3_3-branch&r1=1.16114.2.670&r2=1.16114.2.671
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/toplev.c.diff?cvsroot=gcc&only_with_tag=gcc-3_3-branch&r1=1.690.2.20&r2=1.690.2.21
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-3_3-branch&r1=1.2261.2.236&r2=1.2261.2.237
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/opt/cfg1.C.diff?cvsroot=gcc&only_with_tag=gcc-3_3-branch&r1=NONE&r2=1.1.2.1
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug optimization/11083] [3.3 regression] ICE in commit_one_edge_insertion, at cfgrtl.c:1438 with -O2 -fnon-call-exceptions
2003-06-04 1:08 [Bug optimization/11083] New: [3.3 regression] ICE in commit_one_edge_insertion, at cfgrtl.c:1438 with -O2 -fnon-call-exceptions nick@ilm.com
` (4 preceding siblings ...)
2003-07-18 6:59 ` cvs-commit at gcc dot gnu dot org
@ 2003-07-18 7:03 ` ebotcazou at gcc dot gnu dot org
5 siblings, 0 replies; 7+ messages in thread
From: ebotcazou at gcc dot gnu dot org @ 2003-07-18 7:03 UTC (permalink / raw)
To: gcc-bugs
PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11083
ebotcazou at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
------- Additional Comments From ebotcazou at gcc dot gnu dot org 2003-07-18 07:03 -------
See http://gcc.gnu.org/ml/gcc-patches/2003-07/msg00807.html
^ permalink raw reply [flat|nested] 7+ messages in thread
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2003-06-04 1:08 [Bug optimization/11083] New: [3.3 regression] ICE in commit_one_edge_insertion, at cfgrtl.c:1438 with -O2 -fnon-call-exceptions nick@ilm.com
2003-06-04 1:11 ` [Bug optimization/11083] " nick@ilm.com
2003-06-04 2:32 ` bangerth@dealii.org
2003-06-23 23:11 ` janis187 at us dot ibm dot com
2003-07-08 12:03 ` ebotcazou at gcc dot gnu dot org
2003-07-18 6:59 ` cvs-commit at gcc dot gnu dot org
2003-07-18 7:03 ` ebotcazou at gcc dot gnu dot org
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