* [Bug c++/52727] [4.7] internal compiler error at dwarf2cfi.c2:685
2012-03-26 16:51 [Bug c++/52727] New: [4.7] internal compiler error at dwarf2cfi.c2:685 florian at openwrt dot org
@ 2012-03-26 16:52 ` florian at openwrt dot org
2012-03-26 17:03 ` florian at openwrt dot org
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To: gcc-bugs
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--- Comment #1 from Florian Fainelli <florian at openwrt dot org> 2012-03-26 16:51:13 UTC ---
Created attachment 27003
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=27003
Assembly file
^ permalink raw reply [flat|nested] 26+ messages in thread* [Bug c++/52727] [4.7] internal compiler error at dwarf2cfi.c2:685
2012-03-26 16:51 [Bug c++/52727] New: [4.7] internal compiler error at dwarf2cfi.c2:685 florian at openwrt dot org
2012-03-26 16:52 ` [Bug c++/52727] " florian at openwrt dot org
@ 2012-03-26 17:03 ` florian at openwrt dot org
2012-03-26 17:33 ` jakub at gcc dot gnu.org
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--- Comment #2 from Florian Fainelli <florian at openwrt dot org> 2012-03-26 16:51:54 UTC ---
I will try to create a reduced test-case for this build failure. Thanks!
^ permalink raw reply [flat|nested] 26+ messages in thread* [Bug c++/52727] [4.7] internal compiler error at dwarf2cfi.c2:685
2012-03-26 16:51 [Bug c++/52727] New: [4.7] internal compiler error at dwarf2cfi.c2:685 florian at openwrt dot org
2012-03-26 16:52 ` [Bug c++/52727] " florian at openwrt dot org
2012-03-26 17:03 ` florian at openwrt dot org
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To: gcc-bugs
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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> 2012-03-26 17:14:53 UTC ---
The preprocessed source is useless, because you are using PCH.
See http://gcc.gnu.org/bugs/#pch
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2012-03-26 16:51 [Bug c++/52727] New: [4.7] internal compiler error at dwarf2cfi.c2:685 florian at openwrt dot org
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--- Comment #4 from Florian Fainelli <florian at openwrt dot org> 2012-03-27 08:09:58 UTC ---
(In reply to comment #3)
> The preprocessed source is useless, because you are using PCH.
> See http://gcc.gnu.org/bugs/#pch
I re-ran the same command without the PCH file, and the issue is still present,
attaching the new pre-processed file.
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2012-03-26 16:51 [Bug c++/52727] New: [4.7] internal compiler error at dwarf2cfi.c2:685 florian at openwrt dot org
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Florian Fainelli <florian at openwrt dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #27002|0 |1
is obsolete| |
--- Comment #5 from Florian Fainelli <florian at openwrt dot org> 2012-03-27 08:11:43 UTC ---
Created attachment 27012
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=27012
Preprocessed file without PCH
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2012-03-26 16:51 [Bug c++/52727] New: [4.7] internal compiler error at dwarf2cfi.c2:685 florian at openwrt dot org
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-03-27 08:56:23 UTC ---
Reducing.
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2012-03-26 16:51 [Bug c++/52727] New: [4.7] internal compiler error at dwarf2cfi.c2:685 florian at openwrt dot org
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--- Comment #7 from Florian Fainelli <florian at openwrt dot org> 2012-03-27 11:41:43 UTC ---
(In reply to comment #6)
> Reducing.
FYI, I managed to compile a C++ file containing only the function at line 206
without being able to reproduce the ICE.
Building with -O2 instead of -Os makes the issue disappear.
Finally, I could workaround the ICE by creating a dedicated function for the
computation of the "notches" variable, in case that helps.
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2012-03-26 16:51 [Bug c++/52727] New: [4.7] internal compiler error at dwarf2cfi.c2:685 florian at openwrt dot org
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-03-27 13:15:06 UTC ---
// { dg-options "-g -Os -m32" }
int grow (int);
void fn (int);
struct A { int a1, a2; };
template <typename T>
struct B
{
A *b;
~B () { b3 (b); }
void b1 (int);
void b2 (int);
void b3 (A *);
};
struct C { int c1, c2, c3; bool c4; };
int
bar (int x)
{
int y = x / 6;
if (y > x / 2)
return y;
return 0;
}
void baz (double, double);
void
foo (const C *x, int y, int z)
{
B<int> p;
double r = y / 2;
int w = bar (int (r));
double s = y / 2 + 0.5;
double t = z / 2 + 0.5;
int u = x->c3;
int v = (x->c2 + u - 1 - x->c1) / u;
p.b2 ((2 * v > p.b->a1 || (2 * v < p.b->a2 && 2 * v < (p.b->a1 >> 1))) ? grow
(0) : p.b->a1);
for (int i = 0; i <= v; ++i)
{
double l = x->c4 ? 4.5 - i * 6.2 / v : (3.1 - i * 31 / v) / 6;
baz (s + (r - w) * l, t - (r - w) * l);
}
}
Started with http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=177218
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2012-03-26 16:51 [Bug c++/52727] New: [4.7] internal compiler error at dwarf2cfi.c2:685 florian at openwrt dot org
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To: gcc-bugs
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2012-03-27
Component|c++ |debug
Target Milestone|--- |4.7.1
Summary|[4.7] internal compiler |[4.7/4.8 Regression]
|error at dwarf2cfi.c2:685 |internal compiler error at
| |dwarf2cfi.c2:685
Ever Confirmed|0 |1
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2012-03-26 16:51 [Bug c++/52727] New: [4.7] internal compiler error at dwarf2cfi.c2:685 florian at openwrt dot org
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To: gcc-bugs
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |rth at gcc dot gnu.org
--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-03-27 16:49:37 UTC ---
Looks like a problem during CSA. Before *.csa we have (insn 18 is a stack
adjustment after a call):
(insn 18 17 19 2 (parallel [
(set (reg/f:SI 7 sp)
(plus:SI (reg/f:SI 7 sp)
(const_int 4 [0x4])))
(clobber (reg:CC 17 flags))
]) pr52727.ii:29 251 {*addsi_1}
(expr_list:REG_UNUSED (reg:CC 17 flags)
(expr_list:REG_ARGS_SIZE (const_int 0 [0])
(nil))))
...
(insn 205 27 206 2 (set (mem:SI (pre_dec:SI (reg/f:SI 7 sp)) [0 S4 A8])
(reg:SI 0 ax [115])) pr52727.ii:31 43 {*pushsi2}
(expr_list:REG_DEAD (reg:SI 0 ax [115])
(nil)))
(insn 206 205 207 2 (set (reg:DF 8 st [112])
(plus:DF (float:DF (mem:SI (reg/f:SI 7 sp) [0 S4 A8]))
(reg:DF 8 st [112]))) pr52727.ii:31 765 {*fop_df_2_i387}
(nil))
(insn 207 206 171 2 (set (reg/f:SI 7 sp)
(plus:SI (reg/f:SI 7 sp)
(const_int 4 [0x4]))) pr52727.ii:31 245 {*leasi_2}
(nil))
but then CSA decides to remove insn 18 and adjust insn 205, so that it no
longer pushes the value, but stores it to *sp. Unfortunately it means
REG_ARGS_SIZE is dropped, there is no REG_ARGS_SIZE note on insn 207. Insns
205/206/207 were introduced during split2. Not sure what to do though, adding
REG_ARGS_SIZE notes in the ix86_free_from_memory and ix86_force_to_memory would
mean we'd have to find out what the current REG_ARGS_SIZE depth at that point
is. And to solve this in csa pass, we'd need to find out that if we are
removing stack deallocation with REG_ARGS_SIZE note against later stack
allocation without REG_ARGS_SIZE, there must be some following stack
deallocation on which we would force REG_ARGS_SIZE note. Richard?
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2012-03-26 16:51 [Bug c++/52727] New: [4.7] internal compiler error at dwarf2cfi.c2:685 florian at openwrt dot org
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To: gcc-bugs
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Richard Henderson <rth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
AssignedTo|unassigned at gcc dot |rth at gcc dot gnu.org
|gnu.org |
--- Comment #10 from Richard Henderson <rth at gcc dot gnu.org> 2012-03-27 17:24:29 UTC ---
I agree making the backend handle REG_ARGS_SIZE for temporaries is a lose.
I agree that changing CSA to re-position the note somewhere is almost
certainly the right thing to do.
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2012-03-26 16:51 [Bug c++/52727] New: [4.7] internal compiler error at dwarf2cfi.c2:685 florian at openwrt dot org
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--- Comment #11 from Richard Henderson <rth at gcc dot gnu.org> 2012-03-27 23:20:39 UTC ---
Created attachment 27019
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=27019
proposed patch
Fixes the testcase in the PR. Just starting proper testing now,
what with those new asserts...
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2012-03-26 16:51 [Bug c++/52727] New: [4.7] internal compiler error at dwarf2cfi.c2:685 florian at openwrt dot org
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--- Comment #12 from Richard Henderson <rth at gcc dot gnu.org> 2012-03-29 16:41:57 UTC ---
... and indeed, testing on i686 with BOOT_CFLAGS='-Os -g' causes
at least one of these asserts to fire. More work needed...
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2012-03-26 16:51 [Bug c++/52727] New: [4.7] internal compiler error at dwarf2cfi.c2:685 florian at openwrt dot org
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--- Comment #13 from Richard Henderson <rth at gcc dot gnu.org> 2012-03-30 18:00:45 UTC ---
Author: rth
Date: Fri Mar 30 18:00:37 2012
New Revision: 186018
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=186018
Log:
PR debug/52727
* combine-stack-adj.c (prev_active_insn_bb): New.
(next_active_insn_bb): New.
(force_move_args_size_note): New.
(combine_stack_adjustments_for_block): Use it.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/combine-stack-adj.c
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2012-03-26 16:51 [Bug c++/52727] New: [4.7] internal compiler error at dwarf2cfi.c2:685 florian at openwrt dot org
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To: gcc-bugs
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--- Comment #14 from Richard Henderson <rth at gcc dot gnu.org> 2012-03-30 18:23:10 UTC ---
Author: rth
Date: Fri Mar 30 18:23:06 2012
New Revision: 186019
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=186019
Log:
PR debug/52727
* g++.dg/opt/pr52727.C: New testcase.
Added:
trunk/gcc/testsuite/g++.dg/opt/pr52727.C
Modified:
trunk/gcc/testsuite/ChangeLog
^ permalink raw reply [flat|nested] 26+ messages in thread* [Bug debug/52727] [4.7/4.8 Regression] internal compiler error at dwarf2cfi.c2:685
2012-03-26 16:51 [Bug c++/52727] New: [4.7] internal compiler error at dwarf2cfi.c2:685 florian at openwrt dot org
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From: florian at openwrt dot org @ 2012-04-10 13:39 UTC (permalink / raw)
To: gcc-bugs
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--- Comment #15 from Florian Fainelli <florian at openwrt dot org> 2012-04-10 13:39:26 UTC ---
(In reply to comment #13)
> Author: rth
> Date: Fri Mar 30 18:00:37 2012
> New Revision: 186018
>
> URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=186018
> Log:
> PR debug/52727
> * combine-stack-adj.c (prev_active_insn_bb): New.
> (next_active_insn_bb): New.
> (force_move_args_size_note): New.
> (combine_stack_adjustments_for_block): Use it.
>
> Modified:
> trunk/gcc/ChangeLog
> trunk/gcc/combine-stack-adj.c
Works for me, thanks Richard!
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2012-03-26 16:51 [Bug c++/52727] New: [4.7] internal compiler error at dwarf2cfi.c2:685 florian at openwrt dot org
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From: rguenth at gcc dot gnu.org @ 2012-04-13 13:14 UTC (permalink / raw)
To: gcc-bugs
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Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
Known to work| |4.8.0
Summary|[4.7/4.8 Regression] |[4.7 Regression] internal
|internal compiler error at |compiler error at
|dwarf2cfi.c2:685 |dwarf2cfi.c2:685
--- Comment #16 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-04-13 13:13:06 UTC ---
Fixed on trunk sofar.
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From: rth at gcc dot gnu.org @ 2012-05-16 17:57 UTC (permalink / raw)
To: gcc-bugs
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--- Comment #17 from Richard Henderson <rth at gcc dot gnu.org> 2012-05-16 17:49:48 UTC ---
Author: rth
Date: Wed May 16 17:49:38 2012
New Revision: 187603
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=187603
Log:
PR debug/52727
* combine-stack-adj.c (prev_active_insn_bb): New.
(next_active_insn_bb): New.
(force_move_args_size_note): New.
(combine_stack_adjustments_for_block): Use it.
Added:
branches/gcc-4_7-branch/gcc/testsuite/g++.dg/opt/pr52727.C
Modified:
branches/gcc-4_7-branch/gcc/ChangeLog
branches/gcc-4_7-branch/gcc/combine-stack-adj.c
branches/gcc-4_7-branch/gcc/testsuite/ChangeLog
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From: rth at gcc dot gnu.org @ 2012-05-16 18:02 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52727
Richard Henderson <rth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
--- Comment #18 from Richard Henderson <rth at gcc dot gnu.org> 2012-05-16 17:56:12 UTC ---
Fixed.
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@ 2014-01-30 21:11 ` ppluzhnikov at google dot com
2014-01-31 0:05 ` [Bug debug/52727] [4.9 " jakub at gcc dot gnu.org
` (4 subsequent siblings)
24 siblings, 0 replies; 26+ messages in thread
From: ppluzhnikov at google dot com @ 2014-01-30 21:11 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52727
Paul Pluzhnikov <ppluzhnikov at google dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ppluzhnikov at google dot com
--- Comment #19 from Paul Pluzhnikov <ppluzhnikov at google dot com> ---
(In reply to Richard Henderson from comment #18)
> Fixed.
This is crashing again with yesterday's trunk:
g++ (GCC) 4.9.0 20140129 (experimental)
g++ -g -Os -S -m32 -o /tmp/pr52727.s pr52727.C
pr52727.C: In function 'void foo(const C*, int, int)':
pr52727.C:43:1: internal compiler error: in connect_traces, at dwarf2cfi.c:2706
}
^
0x87b3c4 connect_traces
../../gcc/dwarf2cfi.c:2706
0x87b3c4 execute_dwarf2_frame
../../gcc/dwarf2cfi.c:2926
0x87b3c4 execute
../../gcc/dwarf2cfi.c:3421
Please submit a full bug report,
^ permalink raw reply [flat|nested] 26+ messages in thread* [Bug debug/52727] [4.9 Regression] internal compiler error at dwarf2cfi.c2:685
2012-03-26 16:51 [Bug c++/52727] New: [4.7] internal compiler error at dwarf2cfi.c2:685 florian at openwrt dot org
` (19 preceding siblings ...)
2014-01-30 21:11 ` ppluzhnikov at google dot com
@ 2014-01-31 0:05 ` jakub at gcc dot gnu.org
2014-01-31 6:42 ` jakub at gcc dot gnu.org
` (3 subsequent siblings)
24 siblings, 0 replies; 26+ messages in thread
From: jakub at gcc dot gnu.org @ 2014-01-31 0:05 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52727
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |REOPENED
CC| |hubicka at gcc dot gnu.org
Resolution|FIXED |---
Summary|[4.7 Regression] internal |[4.9 Regression] internal
|compiler error at |compiler error at
|dwarf2cfi.c2:685 |dwarf2cfi.c2:685
--- Comment #20 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
This broke again with r206943.
^ permalink raw reply [flat|nested] 26+ messages in thread* [Bug debug/52727] [4.9 Regression] internal compiler error at dwarf2cfi.c2:685
2012-03-26 16:51 [Bug c++/52727] New: [4.7] internal compiler error at dwarf2cfi.c2:685 florian at openwrt dot org
` (20 preceding siblings ...)
2014-01-31 0:05 ` [Bug debug/52727] [4.9 " jakub at gcc dot gnu.org
@ 2014-01-31 6:42 ` jakub at gcc dot gnu.org
2014-02-05 18:42 ` rth at gcc dot gnu.org
` (2 subsequent siblings)
24 siblings, 0 replies; 26+ messages in thread
From: jakub at gcc dot gnu.org @ 2014-01-31 6:42 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52727
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|4.7.1 |4.9.0
^ permalink raw reply [flat|nested] 26+ messages in thread* [Bug debug/52727] [4.9 Regression] internal compiler error at dwarf2cfi.c2:685
2012-03-26 16:51 [Bug c++/52727] New: [4.7] internal compiler error at dwarf2cfi.c2:685 florian at openwrt dot org
` (21 preceding siblings ...)
2014-01-31 6:42 ` jakub at gcc dot gnu.org
@ 2014-02-05 18:42 ` rth at gcc dot gnu.org
2014-02-05 18:45 ` rth at gcc dot gnu.org
2014-02-05 18:48 ` jakub at gcc dot gnu.org
24 siblings, 0 replies; 26+ messages in thread
From: rth at gcc dot gnu.org @ 2014-02-05 18:42 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52727
--- Comment #22 from Richard Henderson <rth at gcc dot gnu.org> ---
Author: rth
Date: Wed Feb 5 18:42:19 2014
New Revision: 207518
URL: http://gcc.gnu.org/viewcvs?rev=207518&root=gcc&view=rev
Log:
PR debug/52727
* combine-stack-adj.c: Revert r206943.
* sched-int.h (struct deps_desc): Add last_args_size.
* sched-deps.c (init_deps): Initialize it.
(sched_analyze_insn): Add OUTPUT dependencies between insns that
contain REG_ARGS_SIZE notes.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/combine-stack-adj.c
trunk/gcc/sched-deps.c
trunk/gcc/sched-int.h
^ permalink raw reply [flat|nested] 26+ messages in thread* [Bug debug/52727] [4.9 Regression] internal compiler error at dwarf2cfi.c2:685
2012-03-26 16:51 [Bug c++/52727] New: [4.7] internal compiler error at dwarf2cfi.c2:685 florian at openwrt dot org
` (22 preceding siblings ...)
2014-02-05 18:42 ` rth at gcc dot gnu.org
@ 2014-02-05 18:45 ` rth at gcc dot gnu.org
2014-02-05 18:48 ` jakub at gcc dot gnu.org
24 siblings, 0 replies; 26+ messages in thread
From: rth at gcc dot gnu.org @ 2014-02-05 18:45 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52727
Richard Henderson <rth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|REOPENED |RESOLVED
Resolution|--- |FIXED
--- Comment #23 from Richard Henderson <rth at gcc dot gnu.org> ---
Re-fixed. That is, the broken commit reverted and another fix
for that other problem (with apparently no PR) applied.
^ permalink raw reply [flat|nested] 26+ messages in thread* [Bug debug/52727] [4.9 Regression] internal compiler error at dwarf2cfi.c2:685
2012-03-26 16:51 [Bug c++/52727] New: [4.7] internal compiler error at dwarf2cfi.c2:685 florian at openwrt dot org
` (23 preceding siblings ...)
2014-02-05 18:45 ` rth at gcc dot gnu.org
@ 2014-02-05 18:48 ` jakub at gcc dot gnu.org
24 siblings, 0 replies; 26+ messages in thread
From: jakub at gcc dot gnu.org @ 2014-02-05 18:48 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52727
--- Comment #24 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Richard Henderson from comment #23)
> Re-fixed. That is, the broken commit reverted and another fix
> for that other problem (with apparently no PR) applied.
For the record, the other problem was PR59575 #c1-#c5 (unrelated comments for
an otherwise ARM specific bug).
^ permalink raw reply [flat|nested] 26+ messages in thread