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* [Bug tree-optimization/57251] New: ICE in optab_handler, at optabs.h:258
@ 2013-05-11 17:54 antoine.balestrat at gmail dot com
2013-05-13 7:47 ` [Bug tree-optimization/57251] [4.8/4.9 Regression] " mpolacek at gcc dot gnu.org
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: antoine.balestrat at gmail dot com @ 2013-05-11 17:54 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57251
Bug ID: 57251
Summary: ICE in optab_handler, at optabs.h:258
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: antoine.balestrat at gmail dot com
Hello !
Using GCC 4.9.0 as of 20130511 :
$ cat optab.c
short a, b;
int f()
{
long long i = 2;
a ? f() ? : 0 : b--;
b &= i *= a |= 0;
}
$ xgcc -O2 -ftracer -m32 optab.c
optab.c: In function ‘f’:
optab.c:6:7: internal compiler error: in optab_handler, at optabs.h:258
b &= i *= a |= 0;
^
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
>From gcc-bugs-return-422087-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat May 11 20:36:50 2013
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/57250] [C++11] std::shared_ptr misses atomic_* support
Date: Sat, 11 May 2013 20:36:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?idW250
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2013-05-11
Ever confirmed|0 |1
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Yes, this is documented as incomplete:
http://gcc.gnu.org/onlinedocs/libstdc++/manual/status.html#status.iso.2011
(Although I can't remember why it says "Partial" rather than "No")
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug tree-optimization/57251] [4.8/4.9 Regression] ICE in optab_handler, at optabs.h:258
2013-05-11 17:54 [Bug tree-optimization/57251] New: ICE in optab_handler, at optabs.h:258 antoine.balestrat at gmail dot com
@ 2013-05-13 7:47 ` mpolacek at gcc dot gnu.org
2013-05-13 8:06 ` mpolacek at gcc dot gnu.org
` (3 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: mpolacek at gcc dot gnu.org @ 2013-05-13 7:47 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57251
Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2013-05-13
CC| |mpolacek at gcc dot gnu.org
Known to work| |4.7.3
Target Milestone|--- |4.8.1
Summary|ICE in optab_handler, at |[4.8/4.9 Regression] ICE in
|optabs.h:258 |optab_handler, at
| |optabs.h:258
Ever confirmed|0 |1
Known to fail| |4.8.0, 4.9.0
--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Confirmed.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug tree-optimization/57251] [4.8/4.9 Regression] ICE in optab_handler, at optabs.h:258
2013-05-11 17:54 [Bug tree-optimization/57251] New: ICE in optab_handler, at optabs.h:258 antoine.balestrat at gmail dot com
2013-05-13 7:47 ` [Bug tree-optimization/57251] [4.8/4.9 Regression] " mpolacek at gcc dot gnu.org
@ 2013-05-13 8:06 ` mpolacek at gcc dot gnu.org
2013-05-13 9:03 ` jakub at gcc dot gnu.org
` (2 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: mpolacek at gcc dot gnu.org @ 2013-05-13 8:06 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57251
Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |rth at gcc dot gnu.org
--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Started with http://gcc.gnu.org/r189821
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug tree-optimization/57251] [4.8/4.9 Regression] ICE in optab_handler, at optabs.h:258
2013-05-11 17:54 [Bug tree-optimization/57251] New: ICE in optab_handler, at optabs.h:258 antoine.balestrat at gmail dot com
2013-05-13 7:47 ` [Bug tree-optimization/57251] [4.8/4.9 Regression] " mpolacek at gcc dot gnu.org
2013-05-13 8:06 ` mpolacek at gcc dot gnu.org
@ 2013-05-13 9:03 ` jakub at gcc dot gnu.org
2013-05-13 10:10 ` jakub at gcc dot gnu.org
2013-05-14 6:29 ` jakub at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: jakub at gcc dot gnu.org @ 2013-05-13 9:03 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57251
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The problem seems to be that tracer and widening_mul passes happen very late
and there is no forwprop etc. afterwards.
WIDEN_MULT_EXPR expansion tries to avoid having op0 as constant:
if (TREE_CODE (treeop0) != INTEGER_CST)
but that isn't good enough here, because treeop0 is not INTEGER_CST, but it
expands into const0_rtx, which has VOIDmode and thus isn't really desirable for
expand_widening_mult or I guess the [su]mul_widen_optab expand_binop
OPTAB_LIB_WIDEN with expand_mult_highpart_adjust afterwards.
I guess we'll need to after expand_operands or expand_normal in those ifs check
for VOIDmode op0 and handle those somehow (if op1 isn't VOIDmode, perhaps swap
the operands, if both are VOIDmode, zero or sign extend both into the wider
mode and evaluate at compile time)? BTW, is
op1 = convert_modes (innermode, mode,
expand_normal (treeop1), unsignedp);
correct? I mean, unsignedp is the TYPE_UNSIGNED of the result type, but don't
we want here TYPE_UNSIGNED (TREE_TYPE (treeop1)) instead?
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug tree-optimization/57251] [4.8/4.9 Regression] ICE in optab_handler, at optabs.h:258
2013-05-11 17:54 [Bug tree-optimization/57251] New: ICE in optab_handler, at optabs.h:258 antoine.balestrat at gmail dot com
` (2 preceding siblings ...)
2013-05-13 9:03 ` jakub at gcc dot gnu.org
@ 2013-05-13 10:10 ` jakub at gcc dot gnu.org
2013-05-14 6:29 ` jakub at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: jakub at gcc dot gnu.org @ 2013-05-13 10:10 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57251
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 30103
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=30103&action=edit
gcc49-pr57251.patch
Untested fix.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug tree-optimization/57251] [4.8/4.9 Regression] ICE in optab_handler, at optabs.h:258
2013-05-11 17:54 [Bug tree-optimization/57251] New: ICE in optab_handler, at optabs.h:258 antoine.balestrat at gmail dot com
` (3 preceding siblings ...)
2013-05-13 10:10 ` jakub at gcc dot gnu.org
@ 2013-05-14 6:29 ` jakub at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: jakub at gcc dot gnu.org @ 2013-05-14 6:29 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57251
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue May 14 06:26:23 2013
New Revision: 198860
URL: http://gcc.gnu.org/viewcvs?rev=198860&root=gcc&view=rev
Log:
PR middle-end/57251
* expr.c (expand_expr_real_2) <case WIDEN_MULT_EXPR>: Handle
the case when both op0 and op1 have VOIDmode.
* gcc.dg/torture/pr57251.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/torture/pr57251.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/expr.c
trunk/gcc/testsuite/ChangeLog
Author: jakub
Date: Tue May 14 06:28:12 2013
New Revision: 198861
URL: http://gcc.gnu.org/viewcvs?rev=198861&root=gcc&view=rev
Log:
PR middle-end/57251
* expr.c (expand_expr_real_2) <case WIDEN_MULT_EXPR>: Handle
the case when both op0 and op1 have VOIDmode.
* gcc.dg/torture/pr57251.c: New test.
Added:
branches/gcc-4_8-branch/gcc/testsuite/gcc.dg/torture/pr57251.c
Modified:
branches/gcc-4_8-branch/gcc/ChangeLog
branches/gcc-4_8-branch/gcc/expr.c
branches/gcc-4_8-branch/gcc/testsuite/ChangeLog
^ permalink raw reply [flat|nested] 6+ messages in thread
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2013-05-11 17:54 [Bug tree-optimization/57251] New: ICE in optab_handler, at optabs.h:258 antoine.balestrat at gmail dot com
2013-05-13 7:47 ` [Bug tree-optimization/57251] [4.8/4.9 Regression] " mpolacek at gcc dot gnu.org
2013-05-13 8:06 ` mpolacek at gcc dot gnu.org
2013-05-13 9:03 ` jakub at gcc dot gnu.org
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2013-05-14 6:29 ` jakub at gcc dot gnu.org
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