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* [Bug tree-optimization/105537] New: ICE: cannot update SSA form (error: statement uses released SSA name)
@ 2022-05-09 17:26 asolokha at gmx dot com
2022-05-10 7:09 ` [Bug tree-optimization/105537] " rguenth at gcc dot gnu.org
` (11 more replies)
0 siblings, 12 replies; 13+ messages in thread
From: asolokha at gmx dot com @ 2022-05-09 17:26 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105537
Bug ID: 105537
Summary: ICE: cannot update SSA form (error: statement uses
released SSA name)
Product: gcc
Version: 13.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: asolokha at gmx dot com
Target Milestone: ---
gcc 13.0.0 20220508 snapshot (g:a1947c92f7cda5f6cf7b8d8a9a44f6dd45352c03) ICEs
when compiling the following testcase w/ -O3 -ffast-math -fsignaling-nans
-fvar-tracking-assignments -fno-move-loop-stores:
int n;
double
ext1 (int);
void
ext2 (double);
int
sum (int v1, int v2)
{
return v1 + v2;
}
void
bar (void)
{
ext2 (ext1 (n));
}
__attribute__ ((optimize ("-O3"))) void
foo (int *x)
{
static int i;
bar ();
for (i = 0; i != 2; i = sum (i, 1))
n = *x = 0;
}
% gcc-13.0.0 -O3 -ffast-math -fsignaling-nans -fvar-tracking-assignments
-fno-move-loop-stores -w -c sqnqheby.c
sqnqheby.c: In function 'foo':
sqnqheby.c:22:1: error: statement uses released SSA name
22 | foo (int *x)
| ^~~
# DEBUG v1 => _1
The use of _1 should have been replaced
during GIMPLE pass: ldist
sqnqheby.c:22:1: internal compiler error: cannot update SSA form
0xf70cc6 update_ssa(unsigned int)
/var/tmp/portage/sys-devel/gcc-13.0.0_p20220508/work/gcc-13-20220508/gcc/tree-into-ssa.cc:3349
0x104f1c4 rewrite_into_loop_closed_ssa_1(bitmap_head*, unsigned int, int,
loop*)
/var/tmp/portage/sys-devel/gcc-13.0.0_p20220508/work/gcc-13-20220508/gcc/tree-ssa-loop-manip.cc:642
0x104f1c4 rewrite_into_loop_closed_ssa_1(bitmap_head*, unsigned int, int,
loop*)
/var/tmp/portage/sys-devel/gcc-13.0.0_p20220508/work/gcc-13-20220508/gcc/tree-ssa-loop-manip.cc:629
0xf7d869 loop_distribution::execute(function*)
/var/tmp/portage/sys-devel/gcc-13.0.0_p20220508/work/gcc-13-20220508/gcc/tree-loop-distribution.cc:3865
0xf7e097 execute
/var/tmp/portage/sys-devel/gcc-13.0.0_p20220508/work/gcc-13-20220508/gcc/tree-loop-distribution.cc:3912
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug tree-optimization/105537] ICE: cannot update SSA form (error: statement uses released SSA name)
2022-05-09 17:26 [Bug tree-optimization/105537] New: ICE: cannot update SSA form (error: statement uses released SSA name) asolokha at gmx dot com
@ 2022-05-10 7:09 ` rguenth at gcc dot gnu.org
2022-05-10 7:42 ` rguenth at gcc dot gnu.org
` (10 subsequent siblings)
11 siblings, 0 replies; 13+ messages in thread
From: rguenth at gcc dot gnu.org @ 2022-05-10 7:09 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105537
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed| |2022-05-10
Status|UNCONFIRMED |ASSIGNED
Ever confirmed|0 |1
Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot gnu.org
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed. I'll take a look.
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug tree-optimization/105537] ICE: cannot update SSA form (error: statement uses released SSA name)
2022-05-09 17:26 [Bug tree-optimization/105537] New: ICE: cannot update SSA form (error: statement uses released SSA name) asolokha at gmx dot com
2022-05-10 7:09 ` [Bug tree-optimization/105537] " rguenth at gcc dot gnu.org
@ 2022-05-10 7:42 ` rguenth at gcc dot gnu.org
2022-05-10 7:46 ` rguenth at gcc dot gnu.org
` (9 subsequent siblings)
11 siblings, 0 replies; 13+ messages in thread
From: rguenth at gcc dot gnu.org @ 2022-05-10 7:42 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105537
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |marxin at gcc dot gnu.org
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
So it's _another_ case where we have debug stmts but don't expect them. Again,
-fvar-tracking-assignments seems to enable that despite no debug info.
(gdb) p global_options_set.x_flag_var_tracking_assignments
$1 = 1
(gdb) p global_options.x_flag_var_tracking_assignments
$2 = 0
when we create the debug bind it's
(gdb) p global_options.x_flag_var_tracking_assignments
$1 = -1
so that's likely the
if (flag_var_tracking_assignments && !flag_var_tracking)
flag_var_tracking = flag_var_tracking_assignments = -1;
part of finish_options I wondered about when fixing PR105461, but we also
have before that
if (!opts_set->x_flag_var_tracking_assignments)
flag_var_tracking_assignments
= (flag_var_tracking
&& !(flag_selective_scheduling || flag_selective_scheduling2));
so we keep the flag as set but then reset things to -1.
it looks like more failure to use opts->
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug tree-optimization/105537] ICE: cannot update SSA form (error: statement uses released SSA name)
2022-05-09 17:26 [Bug tree-optimization/105537] New: ICE: cannot update SSA form (error: statement uses released SSA name) asolokha at gmx dot com
2022-05-10 7:09 ` [Bug tree-optimization/105537] " rguenth at gcc dot gnu.org
2022-05-10 7:42 ` rguenth at gcc dot gnu.org
@ 2022-05-10 7:46 ` rguenth at gcc dot gnu.org
2022-05-10 8:09 ` rguenth at gcc dot gnu.org
` (8 subsequent siblings)
11 siblings, 0 replies; 13+ messages in thread
From: rguenth at gcc dot gnu.org @ 2022-05-10 7:46 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105537
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
But fixing that doesn't fix the issue. I'll have to trace down where the
mismatch starts - it's somewhere in instantiating the different option set.
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug tree-optimization/105537] ICE: cannot update SSA form (error: statement uses released SSA name)
2022-05-09 17:26 [Bug tree-optimization/105537] New: ICE: cannot update SSA form (error: statement uses released SSA name) asolokha at gmx dot com
` (2 preceding siblings ...)
2022-05-10 7:46 ` rguenth at gcc dot gnu.org
@ 2022-05-10 8:09 ` rguenth at gcc dot gnu.org
2022-05-10 8:17 ` rguenth at gcc dot gnu.org
` (7 subsequent siblings)
11 siblings, 0 replies; 13+ messages in thread
From: rguenth at gcc dot gnu.org @ 2022-05-10 8:09 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105537
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
So the issue is that finish_options consistently produces the
flag_var_tracking = flag_var_tracking_assignments = -1 state but for the
toplev.cc invocation via decode_options we then override this from
process_options with 0 in
/* We know which debug output will be used so we can set flag_var_tracking
and flag_var_tracking_uninit if the user has not specified them. */
if (debug_info_level < DINFO_LEVEL_NORMAL
|| !dwarf_debuginfo_p ()
|| debug_hooks->var_location == do_nothing_debug_hooks.var_location)
{
...
flag_var_tracking = 0;
flag_var_tracking_uninit = 0;
flag_var_tracking_assignments = 0;
}
but that's only done once. I'll note that finish_options has
/* One could use EnabledBy, but it would lead to a circular dependency. */
if (!opts_set->x_flag_var_tracking_uninit)
opts->x_flag_var_tracking_uninit = opts->x_flag_var_tracking;
but before the -1 setting but after resetting flag_var_tracking to false
for < DINFO_LEVEL_NORMAL.
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug tree-optimization/105537] ICE: cannot update SSA form (error: statement uses released SSA name)
2022-05-09 17:26 [Bug tree-optimization/105537] New: ICE: cannot update SSA form (error: statement uses released SSA name) asolokha at gmx dot com
` (3 preceding siblings ...)
2022-05-10 8:09 ` rguenth at gcc dot gnu.org
@ 2022-05-10 8:17 ` rguenth at gcc dot gnu.org
2022-05-10 8:20 ` rguenth at gcc dot gnu.org
` (6 subsequent siblings)
11 siblings, 0 replies; 13+ messages in thread
From: rguenth at gcc dot gnu.org @ 2022-05-10 8:17 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105537
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |aoliva at gcc dot gnu.org
--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
That -1 setting was originally added by as
@@ -1977,6 +1989,15 @@ process_options (void)
if (flag_var_tracking == AUTODETECT_VALUE)
flag_var_tracking = optimize >= 1;
+ if (flag_var_tracking_assignments == AUTODETECT_VALUE)
+ flag_var_tracking_assignments = 0;
+
+ if (flag_var_tracking_assignments_toggle)
+ flag_var_tracking_assignments = !flag_var_tracking_assignments;
+
+ if (flag_var_tracking_assignments && !flag_var_tracking)
+ flag_var_tracking = flag_var_tracking_assignments = -1;
+
if (flag_tree_cselim == AUTODETECT_VALUE)
#ifdef HAVE_conditional_move
flag_tree_cselim = 1;
the flags documentation at that point said (it's no longer there)
+/* Positive if we should track variables, negative if we should run
+ the var-tracking pass only to discard debug annotations, zero if
+ we're not to run it. When flag_var_tracking == AUTODETECT_VALUE it
+ will be set according to optimize, debug_info_level and debug_hooks
+ in process_options (). */
int flag_var_tracking = AUTODETECT_VALUE;
+/* Positive if we should track variables at assignments, negative if
+ we should run the var-tracking pass only to discard debug
+ annotations. When flag_var_tracking_assignments ==
+ AUTODETECT_VALUE it will be set according to flag_var_tracking. */
+int flag_var_tracking_assignments = AUTODETECT_VALUE;
+
+/* Nonzero if we should toggle flag_var_tracking_assignments after
+ processing options and computing its default. */
+int flag_var_tracking_assignments_toggle = 0;
I'm unsure how the -1 setting was supposed to materialize with the
debuginfo level check, but I _think_ that eventually the desire was
to have -fvar-tracking-assignments work in "dummy" mode even with -g0
(but not really tied to flag_var_tracking?).
I will try to make it work that way again by removing the = 0 setting
from toplev.cc but keeping the diagnostic only.
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug tree-optimization/105537] ICE: cannot update SSA form (error: statement uses released SSA name)
2022-05-09 17:26 [Bug tree-optimization/105537] New: ICE: cannot update SSA form (error: statement uses released SSA name) asolokha at gmx dot com
` (4 preceding siblings ...)
2022-05-10 8:17 ` rguenth at gcc dot gnu.org
@ 2022-05-10 8:20 ` rguenth at gcc dot gnu.org
2022-05-10 11:04 ` [Bug tree-optimization/105537] [12 Regression] " rguenth at gcc dot gnu.org
` (5 subsequent siblings)
11 siblings, 0 replies; 13+ messages in thread
From: rguenth at gcc dot gnu.org @ 2022-05-10 8:20 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105537
--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Btw, -fvar-tracking-uninit without -g produces the diagnostic but
-fvar-tracking doesn't anymore (as expected from the finish_options hunk).
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug tree-optimization/105537] [12 Regression] ICE: cannot update SSA form (error: statement uses released SSA name)
2022-05-09 17:26 [Bug tree-optimization/105537] New: ICE: cannot update SSA form (error: statement uses released SSA name) asolokha at gmx dot com
` (5 preceding siblings ...)
2022-05-10 8:20 ` rguenth at gcc dot gnu.org
@ 2022-05-10 11:04 ` rguenth at gcc dot gnu.org
2022-05-10 11:05 ` cvs-commit at gcc dot gnu.org
` (4 subsequent siblings)
11 siblings, 0 replies; 13+ messages in thread
From: rguenth at gcc dot gnu.org @ 2022-05-10 11:04 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105537
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|ICE: cannot update SSA form |[12 Regression] ICE: cannot
|(error: statement uses |update SSA form (error:
|released SSA name) |statement uses released SSA
| |name)
Target Milestone|--- |12.2
Priority|P3 |P2
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug tree-optimization/105537] [12 Regression] ICE: cannot update SSA form (error: statement uses released SSA name)
2022-05-09 17:26 [Bug tree-optimization/105537] New: ICE: cannot update SSA form (error: statement uses released SSA name) asolokha at gmx dot com
` (6 preceding siblings ...)
2022-05-10 11:04 ` [Bug tree-optimization/105537] [12 Regression] " rguenth at gcc dot gnu.org
@ 2022-05-10 11:05 ` cvs-commit at gcc dot gnu.org
2022-05-10 11:05 ` rguenth at gcc dot gnu.org
` (3 subsequent siblings)
11 siblings, 0 replies; 13+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2022-05-10 11:05 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105537
--- Comment #7 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Richard Biener <rguenth@gcc.gnu.org>:
https://gcc.gnu.org/g:76db543db88727789a6c117608a23edc2eace713
commit r13-259-g76db543db88727789a6c117608a23edc2eace713
Author: Richard Biener <rguenther@suse.de>
Date: Tue May 10 11:44:40 2022 +0200
middle-end/105537 - debug processing
The following makes sure to have a consistent state of
flag_var_tracking_assignments with the distributed handling
in process_options and finish_options by moving everything to
finish_options which also restores diagnostics for
-g0 -fvar-tracking which was lost with previous changes.
2022-05-10 Richard Biener <rguenther@suse.de>
PR middle-end/105537
* toplev.cc (process_options): Move flag_var_tracking
handling ...
* opts.cc (finish_options): ... here.
* gcc.dg/torture/pr105537.c: New testcase.
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug tree-optimization/105537] [12 Regression] ICE: cannot update SSA form (error: statement uses released SSA name)
2022-05-09 17:26 [Bug tree-optimization/105537] New: ICE: cannot update SSA form (error: statement uses released SSA name) asolokha at gmx dot com
` (7 preceding siblings ...)
2022-05-10 11:05 ` cvs-commit at gcc dot gnu.org
@ 2022-05-10 11:05 ` rguenth at gcc dot gnu.org
2022-05-11 8:50 ` rguenth at gcc dot gnu.org
` (2 subsequent siblings)
11 siblings, 0 replies; 13+ messages in thread
From: rguenth at gcc dot gnu.org @ 2022-05-10 11:05 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105537
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |13.0
--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed on trunk sofar.
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug tree-optimization/105537] [12 Regression] ICE: cannot update SSA form (error: statement uses released SSA name)
2022-05-09 17:26 [Bug tree-optimization/105537] New: ICE: cannot update SSA form (error: statement uses released SSA name) asolokha at gmx dot com
` (8 preceding siblings ...)
2022-05-10 11:05 ` rguenth at gcc dot gnu.org
@ 2022-05-11 8:50 ` rguenth at gcc dot gnu.org
2022-05-19 12:47 ` cvs-commit at gcc dot gnu.org
2022-05-19 12:50 ` rguenth at gcc dot gnu.org
11 siblings, 0 replies; 13+ messages in thread
From: rguenth at gcc dot gnu.org @ 2022-05-11 8:50 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105537
Bug 105537 depends on bug 105551, which changed state.
Bug 105551 Summary: [13 Regression] [nvptx] ICE in final_scan_insn_1, at final.cc:2629 when building libgcc2.c since r13-259-g76db543db88727789a6c117608a23edc2eace713
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105551
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug tree-optimization/105537] [12 Regression] ICE: cannot update SSA form (error: statement uses released SSA name)
2022-05-09 17:26 [Bug tree-optimization/105537] New: ICE: cannot update SSA form (error: statement uses released SSA name) asolokha at gmx dot com
` (9 preceding siblings ...)
2022-05-11 8:50 ` rguenth at gcc dot gnu.org
@ 2022-05-19 12:47 ` cvs-commit at gcc dot gnu.org
2022-05-19 12:50 ` rguenth at gcc dot gnu.org
11 siblings, 0 replies; 13+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2022-05-19 12:47 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105537
--- Comment #9 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-12 branch has been updated by Richard Biener
<rguenth@gcc.gnu.org>:
https://gcc.gnu.org/g:a53eff4ad05f234a509dd2995d5a7612d5baa4e8
commit r12-8398-ga53eff4ad05f234a509dd2995d5a7612d5baa4e8
Author: Richard Biener <rguenther@suse.de>
Date: Tue May 10 11:44:40 2022 +0200
middle-end/105537 - debug processing
The following makes sure to have a consistent state of
flag_var_tracking_assignments with the distributed handling
in process_options and finish_options by moving everything to
finish_options which also restores diagnostics for
-g0 -fvar-tracking which was lost with previous changes.
2022-05-10 Richard Biener <rguenther@suse.de>
PR middle-end/105537
* toplev.cc (process_options): Move flag_var_tracking
handling ...
* opts.cc (finish_options): ... here.
* gcc.dg/torture/pr105537.c: New testcase.
(cherry picked from commit 76db543db88727789a6c117608a23edc2eace713)
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug tree-optimization/105537] [12 Regression] ICE: cannot update SSA form (error: statement uses released SSA name)
2022-05-09 17:26 [Bug tree-optimization/105537] New: ICE: cannot update SSA form (error: statement uses released SSA name) asolokha at gmx dot com
` (10 preceding siblings ...)
2022-05-19 12:47 ` cvs-commit at gcc dot gnu.org
@ 2022-05-19 12:50 ` rguenth at gcc dot gnu.org
11 siblings, 0 replies; 13+ messages in thread
From: rguenth at gcc dot gnu.org @ 2022-05-19 12:50 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105537
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
Known to work| |12.1.1
Known to fail| |12.1.0
--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
^ permalink raw reply [flat|nested] 13+ messages in thread
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