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* [Bug tree-optimization/50764] New: [4.7 Regression] ICE: in maybe_record_trace_start, at dwarf2cfi.c:2243 with -O2 -fsched2-use-superblocks -ftree-tail-merge
@ 2011-10-17 18:26 zsojka at seznam dot cz
2011-10-17 21:55 ` [Bug tree-optimization/50764] " vries at gcc dot gnu.org
` (14 more replies)
0 siblings, 15 replies; 16+ messages in thread
From: zsojka at seznam dot cz @ 2011-10-17 18:26 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50764
Bug #: 50764
Summary: [4.7 Regression] ICE: in maybe_record_trace_start, at
dwarf2cfi.c:2243 with -O2 -fsched2-use-superblocks
-ftree-tail-merge
Classification: Unclassified
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: zsojka@seznam.cz
CC: vries@gcc.gnu.org
Host: x86_64-pc-linux-gnu
Target: x86_64-pc-linux-gnu
Created attachment 25528
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25528
reduced testcase
Compiler output:
$ gcc -O2 -fsched2-use-superblocks testcase.c
testcase.c: In function 'foo':
testcase.c:13:1: internal compiler error: in maybe_record_trace_start, at
dwarf2cfi.c:2243
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
Maybe related to -ftree-tail-merge, as it doesn't crash with
-fno-tree-tail-merge.
Tested revisions:
r180072 - crash
r179959 - crash
r178498 - OK
4.6 r177922 - OK
^ permalink raw reply [flat|nested] 16+ messages in thread
* [Bug tree-optimization/50764] [4.7 Regression] ICE: in maybe_record_trace_start, at dwarf2cfi.c:2243 with -O2 -fsched2-use-superblocks -ftree-tail-merge
2011-10-17 18:26 [Bug tree-optimization/50764] New: [4.7 Regression] ICE: in maybe_record_trace_start, at dwarf2cfi.c:2243 with -O2 -fsched2-use-superblocks -ftree-tail-merge zsojka at seznam dot cz
@ 2011-10-17 21:55 ` vries at gcc dot gnu.org
2011-10-18 9:55 ` rguenth at gcc dot gnu.org
` (13 subsequent siblings)
14 siblings, 0 replies; 16+ messages in thread
From: vries at gcc dot gnu.org @ 2011-10-17 21:55 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50764
--- Comment #1 from vries at gcc dot gnu.org 2011-10-17 21:55:12 UTC ---
Created attachment 25535
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25535
sdiff between 091t.crited and 092t.pre
I don't seen anything obviously wrong with the transformation by
-ftree-tail-merge.
Block 6 and block 7 have the same successor (block 4) and are both empty, so
equal.
Block 7 is removed, the incoming edge of block 7 is redirected to block 6, and
a virtual phi is inserted at the start of block 6.
^ permalink raw reply [flat|nested] 16+ messages in thread
* [Bug tree-optimization/50764] [4.7 Regression] ICE: in maybe_record_trace_start, at dwarf2cfi.c:2243 with -O2 -fsched2-use-superblocks -ftree-tail-merge
2011-10-17 18:26 [Bug tree-optimization/50764] New: [4.7 Regression] ICE: in maybe_record_trace_start, at dwarf2cfi.c:2243 with -O2 -fsched2-use-superblocks -ftree-tail-merge zsojka at seznam dot cz
2011-10-17 21:55 ` [Bug tree-optimization/50764] " vries at gcc dot gnu.org
@ 2011-10-18 9:55 ` rguenth at gcc dot gnu.org
2011-10-27 11:07 ` rguenth at gcc dot gnu.org
` (12 subsequent siblings)
14 siblings, 0 replies; 16+ messages in thread
From: rguenth at gcc dot gnu.org @ 2011-10-18 9:55 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50764
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2011-10-18
Target Milestone|--- |4.7.0
Ever Confirmed|0 |1
--- Comment #2 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-10-18 09:54:33 UTC ---
Confirmed.
^ permalink raw reply [flat|nested] 16+ messages in thread
* [Bug tree-optimization/50764] [4.7 Regression] ICE: in maybe_record_trace_start, at dwarf2cfi.c:2243 with -O2 -fsched2-use-superblocks -ftree-tail-merge
2011-10-17 18:26 [Bug tree-optimization/50764] New: [4.7 Regression] ICE: in maybe_record_trace_start, at dwarf2cfi.c:2243 with -O2 -fsched2-use-superblocks -ftree-tail-merge zsojka at seznam dot cz
2011-10-17 21:55 ` [Bug tree-optimization/50764] " vries at gcc dot gnu.org
2011-10-18 9:55 ` rguenth at gcc dot gnu.org
@ 2011-10-27 11:07 ` rguenth at gcc dot gnu.org
2011-10-27 14:33 ` vries at gcc dot gnu.org
` (11 subsequent siblings)
14 siblings, 0 replies; 16+ messages in thread
From: rguenth at gcc dot gnu.org @ 2011-10-27 11:07 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50764
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P1
^ permalink raw reply [flat|nested] 16+ messages in thread
* [Bug tree-optimization/50764] [4.7 Regression] ICE: in maybe_record_trace_start, at dwarf2cfi.c:2243 with -O2 -fsched2-use-superblocks -ftree-tail-merge
2011-10-17 18:26 [Bug tree-optimization/50764] New: [4.7 Regression] ICE: in maybe_record_trace_start, at dwarf2cfi.c:2243 with -O2 -fsched2-use-superblocks -ftree-tail-merge zsojka at seznam dot cz
` (2 preceding siblings ...)
2011-10-27 11:07 ` rguenth at gcc dot gnu.org
@ 2011-10-27 14:33 ` vries at gcc dot gnu.org
2011-10-27 15:29 ` vries at gcc dot gnu.org
` (10 subsequent siblings)
14 siblings, 0 replies; 16+ messages in thread
From: vries at gcc dot gnu.org @ 2011-10-27 14:33 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50764
--- Comment #3 from vries at gcc dot gnu.org 2011-10-27 14:32:45 UTC ---
Created attachment 25633
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25633
sdiff between 209r.split4 (before sched2) -fno-tree-tail-merge and
-ftree-tail-merge
differences between the 2:
- the position of a dead code_label (code_label 33 vs. code_label 23)
- the presence of DImode on label_refs (insn 19 vs insn 19, insn 26 vs insn
31)
^ permalink raw reply [flat|nested] 16+ messages in thread
* [Bug tree-optimization/50764] [4.7 Regression] ICE: in maybe_record_trace_start, at dwarf2cfi.c:2243 with -O2 -fsched2-use-superblocks -ftree-tail-merge
2011-10-17 18:26 [Bug tree-optimization/50764] New: [4.7 Regression] ICE: in maybe_record_trace_start, at dwarf2cfi.c:2243 with -O2 -fsched2-use-superblocks -ftree-tail-merge zsojka at seznam dot cz
` (3 preceding siblings ...)
2011-10-27 14:33 ` vries at gcc dot gnu.org
@ 2011-10-27 15:29 ` vries at gcc dot gnu.org
2011-10-27 15:54 ` vries at gcc dot gnu.org
` (9 subsequent siblings)
14 siblings, 0 replies; 16+ messages in thread
From: vries at gcc dot gnu.org @ 2011-10-27 15:29 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50764
--- Comment #4 from vries at gcc dot gnu.org 2011-10-27 15:29:10 UTC ---
Created attachment 25634
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25634
sdiff between 209r.split4 and 210r.sched2 with -ftree-tail-merge
The effect of -fsched2-use-superblocks (with -ftree-tail-merge) is that note 59
and insn 51 are moved from block 4 to block 3.
...
(note 59 27 51 3 NOTE_INSN_EPILOGUE_BEG)
(insn/f 51 50 52 4 (set (reg:DI 39 r10)
(mem/c:DI (plus:DI (reg/f:DI 6 bp)
(const_int -8 [0xfffffffffffffff8])) [3 S8 A8])) pr50764.c:13
62 {*movdi_internal_rex64}
(expr_list:REG_CFA_DEF_CFA (reg:DI 39 r10)
(nil)))
...
block 4 contains a return, and block 3 jumps either to block 4 or block 5,
which calls abort.
2
bar
|
-------+-----
/ \
* *
5 *------------ 3
abort bar
|
|
*
4
return
The move looks ok, bp and memory are not modified in between the original and
new position, and r10 does not overwrite a value in block 3 or 5.
Possibly the dead label at the start of block 4 prevents this move in case of
-fno-tree-tail-merge.
^ permalink raw reply [flat|nested] 16+ messages in thread
* [Bug tree-optimization/50764] [4.7 Regression] ICE: in maybe_record_trace_start, at dwarf2cfi.c:2243 with -O2 -fsched2-use-superblocks -ftree-tail-merge
2011-10-17 18:26 [Bug tree-optimization/50764] New: [4.7 Regression] ICE: in maybe_record_trace_start, at dwarf2cfi.c:2243 with -O2 -fsched2-use-superblocks -ftree-tail-merge zsojka at seznam dot cz
` (4 preceding siblings ...)
2011-10-27 15:29 ` vries at gcc dot gnu.org
@ 2011-10-27 15:54 ` vries at gcc dot gnu.org
2011-10-27 20:43 ` vries at gcc dot gnu.org
` (8 subsequent siblings)
14 siblings, 0 replies; 16+ messages in thread
From: vries at gcc dot gnu.org @ 2011-10-27 15:54 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50764
--- Comment #5 from vries at gcc dot gnu.org 2011-10-27 15:54:07 UTC ---
during 223r.dwarf2, maybe_record_trace_start is called with lab == code_label
29, at the start of block 5, and we hit the assert:
...
gcc_checking_assert (cfi_row_equal_p (cur_row, ti->beg_row));
...
The difference between cur_row and ti->beg_row can be seen here:
...
(gdb) p *cur_row
$4 = {cfa = {offset = 0, base_offset = 0, reg = 10, indirect = 0, in_use = 0},
cfa_cfi = 0x0, reg_save = 0x7ffff554a980}
(gdb) p *ti->beg_row
$6 = {cfa = {offset = 0, base_offset = -8, reg = 6, indirect = 1, in_use = 0},
cfa_cfi = 0x7ffff5696b70, reg_save = 0x7ffff554a850}
...
Apparently moving REG_CFA_DEF_CFA (reg:DI 39 r10) from block 4 to block 3
causes a different CFA state at the beginning of block 5, depending on whether
you arrive there from block 3 or block 2.
I don't know enough about dwarf to say whether the assert is ok or not, but it
seems to me that either the assert is wrong, or -fsched2-use-superblocks.
^ permalink raw reply [flat|nested] 16+ messages in thread
* [Bug tree-optimization/50764] [4.7 Regression] ICE: in maybe_record_trace_start, at dwarf2cfi.c:2243 with -O2 -fsched2-use-superblocks -ftree-tail-merge
2011-10-17 18:26 [Bug tree-optimization/50764] New: [4.7 Regression] ICE: in maybe_record_trace_start, at dwarf2cfi.c:2243 with -O2 -fsched2-use-superblocks -ftree-tail-merge zsojka at seznam dot cz
` (5 preceding siblings ...)
2011-10-27 15:54 ` vries at gcc dot gnu.org
@ 2011-10-27 20:43 ` vries at gcc dot gnu.org
2011-10-29 12:29 ` [Bug rtl-optimization/50764] " vries at gcc dot gnu.org
` (7 subsequent siblings)
14 siblings, 0 replies; 16+ messages in thread
From: vries at gcc dot gnu.org @ 2011-10-27 20:43 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50764
vries at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |rth at gcc dot gnu.org
--- Comment #6 from vries at gcc dot gnu.org 2011-10-27 20:43:15 UTC ---
Richard,
Can you confirm that the assert triggers correctly?
Thanks,
- Tom
^ permalink raw reply [flat|nested] 16+ messages in thread
* [Bug rtl-optimization/50764] [4.7 Regression] ICE: in maybe_record_trace_start, at dwarf2cfi.c:2243 with -O2 -fsched2-use-superblocks -ftree-tail-merge
2011-10-17 18:26 [Bug tree-optimization/50764] New: [4.7 Regression] ICE: in maybe_record_trace_start, at dwarf2cfi.c:2243 with -O2 -fsched2-use-superblocks -ftree-tail-merge zsojka at seznam dot cz
` (6 preceding siblings ...)
2011-10-27 20:43 ` vries at gcc dot gnu.org
@ 2011-10-29 12:29 ` vries at gcc dot gnu.org
2011-10-29 12:33 ` vries at gcc dot gnu.org
` (6 subsequent siblings)
14 siblings, 0 replies; 16+ messages in thread
From: vries at gcc dot gnu.org @ 2011-10-29 12:29 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50764
vries at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|tree-optimization |rtl-optimization
--- Comment #7 from vries at gcc dot gnu.org 2011-10-29 12:28:23 UTC ---
Using this patch, the dead label introduced by cfg_layout_finalize is removed:
...
Index: gcc/bb-reorder.c
===================================================================
--- gcc/bb-reorder.c (revision 180521)
+++ gcc/bb-reorder.c (working copy)
@@ -2328,6 +2328,7 @@ rest_of_handle_reorder_blocks (void)
if (bb->next_bb != EXIT_BLOCK_PTR)
bb->aux = bb->next_bb;
cfg_layout_finalize ();
+ cleanup_cfg (0);
/* Add NOTE_INSN_SWITCH_TEXT_SECTIONS notes. */
insert_section_boundary_note ();
...
and the assert triggers for -O2 -fsched2-use-superblocks -fno-tree-tail-merge.
Changing component to rtl-optimization.
^ permalink raw reply [flat|nested] 16+ messages in thread
* [Bug rtl-optimization/50764] [4.7 Regression] ICE: in maybe_record_trace_start, at dwarf2cfi.c:2243 with -O2 -fsched2-use-superblocks -ftree-tail-merge
2011-10-17 18:26 [Bug tree-optimization/50764] New: [4.7 Regression] ICE: in maybe_record_trace_start, at dwarf2cfi.c:2243 with -O2 -fsched2-use-superblocks -ftree-tail-merge zsojka at seznam dot cz
` (7 preceding siblings ...)
2011-10-29 12:29 ` [Bug rtl-optimization/50764] " vries at gcc dot gnu.org
@ 2011-10-29 12:33 ` vries at gcc dot gnu.org
2011-10-29 17:16 ` vries at gcc dot gnu.org
` (5 subsequent siblings)
14 siblings, 0 replies; 16+ messages in thread
From: vries at gcc dot gnu.org @ 2011-10-29 12:33 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50764
--- Comment #8 from vries at gcc dot gnu.org 2011-10-29 12:32:37 UTC ---
> Using this patch, the dead label introduced by cfg_layout_finalize is removed:
To be more precise: Using this patch, the dead label introduced by
cfg_layout_finalize is removed before sched2 (in pass_reorder_blocks) rather
than after sched2 (in pass_duplicate_computed_gotos).
^ permalink raw reply [flat|nested] 16+ messages in thread
* [Bug rtl-optimization/50764] [4.7 Regression] ICE: in maybe_record_trace_start, at dwarf2cfi.c:2243 with -O2 -fsched2-use-superblocks -ftree-tail-merge
2011-10-17 18:26 [Bug tree-optimization/50764] New: [4.7 Regression] ICE: in maybe_record_trace_start, at dwarf2cfi.c:2243 with -O2 -fsched2-use-superblocks -ftree-tail-merge zsojka at seznam dot cz
` (8 preceding siblings ...)
2011-10-29 12:33 ` vries at gcc dot gnu.org
@ 2011-10-29 17:16 ` vries at gcc dot gnu.org
2011-10-30 7:40 ` vries at gcc dot gnu.org
` (4 subsequent siblings)
14 siblings, 0 replies; 16+ messages in thread
From: vries at gcc dot gnu.org @ 2011-10-29 17:16 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50764
--- Comment #9 from vries at gcc dot gnu.org 2011-10-29 17:16:11 UTC ---
Using the bb-reorder patch, the assert is introduced/triggered by r177209:
...
r177209 | rth | 2011-08-02 21:56:29 +0200 (Tue, 02 Aug 2011) | 5 lines
h8300: Generate correct unwind info around swap_into/out_of_er6.
Minimal bug fix is to unset RTX_FRAME_RELATED_P on the PUSH
insn generated in h8300_swap_into_er6. But with a tiny bit
of effort we can generate real unwind info around the sequence.
...
^ permalink raw reply [flat|nested] 16+ messages in thread
* [Bug rtl-optimization/50764] [4.7 Regression] ICE: in maybe_record_trace_start, at dwarf2cfi.c:2243 with -O2 -fsched2-use-superblocks -ftree-tail-merge
2011-10-17 18:26 [Bug tree-optimization/50764] New: [4.7 Regression] ICE: in maybe_record_trace_start, at dwarf2cfi.c:2243 with -O2 -fsched2-use-superblocks -ftree-tail-merge zsojka at seznam dot cz
` (9 preceding siblings ...)
2011-10-29 17:16 ` vries at gcc dot gnu.org
@ 2011-10-30 7:40 ` vries at gcc dot gnu.org
2011-11-21 16:41 ` matz at gcc dot gnu.org
` (3 subsequent siblings)
14 siblings, 0 replies; 16+ messages in thread
From: vries at gcc dot gnu.org @ 2011-10-30 7:40 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50764
--- Comment #10 from vries at gcc dot gnu.org 2011-10-30 07:39:36 UTC ---
Tentative patch at http://gcc.gnu.org/ml/gcc-patches/2011-10/msg02767.html
^ permalink raw reply [flat|nested] 16+ messages in thread
* [Bug rtl-optimization/50764] [4.7 Regression] ICE: in maybe_record_trace_start, at dwarf2cfi.c:2243 with -O2 -fsched2-use-superblocks -ftree-tail-merge
2011-10-17 18:26 [Bug tree-optimization/50764] New: [4.7 Regression] ICE: in maybe_record_trace_start, at dwarf2cfi.c:2243 with -O2 -fsched2-use-superblocks -ftree-tail-merge zsojka at seznam dot cz
` (10 preceding siblings ...)
2011-10-30 7:40 ` vries at gcc dot gnu.org
@ 2011-11-21 16:41 ` matz at gcc dot gnu.org
2011-11-22 21:02 ` vries at gcc dot gnu.org
` (2 subsequent siblings)
14 siblings, 0 replies; 16+ messages in thread
From: matz at gcc dot gnu.org @ 2011-11-21 16:41 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50764
Michael Matz <matz at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |matz at gcc dot gnu.org
--- Comment #11 from Michael Matz <matz at gcc dot gnu.org> 2011-11-21 16:23:00 UTC ---
That sched2 moves frame related instructions into paths that didn't have
them before seems dubious. The assert is correct in sofar as triggering
implies generating wrong unwind info: Depending on if bb5 (the abort) would
be placed after or before bb 3, it would have wrong unwind info for the
path 2->5 (CFA would be r10, but it wouldn't be set up) or 3->5 (CFA would
be r6, but due to the push at the wrong offset).
I think the dead-label moving just exposes the bug in sched2.
^ permalink raw reply [flat|nested] 16+ messages in thread
* [Bug rtl-optimization/50764] [4.7 Regression] ICE: in maybe_record_trace_start, at dwarf2cfi.c:2243 with -O2 -fsched2-use-superblocks -ftree-tail-merge
2011-10-17 18:26 [Bug tree-optimization/50764] New: [4.7 Regression] ICE: in maybe_record_trace_start, at dwarf2cfi.c:2243 with -O2 -fsched2-use-superblocks -ftree-tail-merge zsojka at seznam dot cz
` (11 preceding siblings ...)
2011-11-21 16:41 ` matz at gcc dot gnu.org
@ 2011-11-22 21:02 ` vries at gcc dot gnu.org
2011-11-22 21:04 ` vries at gcc dot gnu.org
2011-11-22 21:33 ` vries at gcc dot gnu.org
14 siblings, 0 replies; 16+ messages in thread
From: vries at gcc dot gnu.org @ 2011-11-22 21:02 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50764
--- Comment #12 from vries at gcc dot gnu.org 2011-11-22 20:55:06 UTC ---
Author: vries
Date: Tue Nov 22 20:55:01 2011
New Revision: 181639
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=181639
Log:
2011-11-22 Tom de Vries <tom@codesourcery.com>
PR rtl-optimization/50764
* sched-deps.c (sched_analyze_insn): Make sure frame-related insns are
not moved past preceding jump.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/sched-deps.c
^ permalink raw reply [flat|nested] 16+ messages in thread
* [Bug rtl-optimization/50764] [4.7 Regression] ICE: in maybe_record_trace_start, at dwarf2cfi.c:2243 with -O2 -fsched2-use-superblocks -ftree-tail-merge
2011-10-17 18:26 [Bug tree-optimization/50764] New: [4.7 Regression] ICE: in maybe_record_trace_start, at dwarf2cfi.c:2243 with -O2 -fsched2-use-superblocks -ftree-tail-merge zsojka at seznam dot cz
` (12 preceding siblings ...)
2011-11-22 21:02 ` vries at gcc dot gnu.org
@ 2011-11-22 21:04 ` vries at gcc dot gnu.org
2011-11-22 21:33 ` vries at gcc dot gnu.org
14 siblings, 0 replies; 16+ messages in thread
From: vries at gcc dot gnu.org @ 2011-11-22 21:04 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50764
--- Comment #13 from vries at gcc dot gnu.org 2011-11-22 20:55:13 UTC ---
Author: vries
Date: Tue Nov 22 20:55:10 2011
New Revision: 181640
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=181640
Log:
2011-11-22 Tom de Vries <tom@codesourcery.com>
PR rtl-optimization/50764
* gcc.dg/pr50764.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/pr50764.c
Modified:
trunk/gcc/testsuite/ChangeLog
^ permalink raw reply [flat|nested] 16+ messages in thread
* [Bug rtl-optimization/50764] [4.7 Regression] ICE: in maybe_record_trace_start, at dwarf2cfi.c:2243 with -O2 -fsched2-use-superblocks -ftree-tail-merge
2011-10-17 18:26 [Bug tree-optimization/50764] New: [4.7 Regression] ICE: in maybe_record_trace_start, at dwarf2cfi.c:2243 with -O2 -fsched2-use-superblocks -ftree-tail-merge zsojka at seznam dot cz
` (13 preceding siblings ...)
2011-11-22 21:04 ` vries at gcc dot gnu.org
@ 2011-11-22 21:33 ` vries at gcc dot gnu.org
14 siblings, 0 replies; 16+ messages in thread
From: vries at gcc dot gnu.org @ 2011-11-22 21:33 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50764
vries at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |FIXED
--- Comment #14 from vries at gcc dot gnu.org 2011-11-22 21:01:02 UTC ---
Patch and test-case checked in, marking resolved fixed.
^ permalink raw reply [flat|nested] 16+ messages in thread
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2011-10-17 18:26 [Bug tree-optimization/50764] New: [4.7 Regression] ICE: in maybe_record_trace_start, at dwarf2cfi.c:2243 with -O2 -fsched2-use-superblocks -ftree-tail-merge zsojka at seznam dot cz
2011-10-17 21:55 ` [Bug tree-optimization/50764] " vries at gcc dot gnu.org
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2011-10-27 15:54 ` vries at gcc dot gnu.org
2011-10-27 20:43 ` vries at gcc dot gnu.org
2011-10-29 12:29 ` [Bug rtl-optimization/50764] " vries at gcc dot gnu.org
2011-10-29 12:33 ` vries at gcc dot gnu.org
2011-10-29 17:16 ` vries at gcc dot gnu.org
2011-10-30 7:40 ` vries at gcc dot gnu.org
2011-11-21 16:41 ` matz at gcc dot gnu.org
2011-11-22 21:02 ` vries at gcc dot gnu.org
2011-11-22 21:04 ` vries at gcc dot gnu.org
2011-11-22 21:33 ` vries at gcc dot gnu.org
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