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* [Bug target/112987] New: [14 Regression][aarch64] ICE in aarch64_do_track_speculation, at config/aarch64/aarch64-speculation.cc:214 since r14-5886-g426fddcbdad674
@ 2023-12-12 17:32 mjires at suse dot cz
2023-12-12 18:05 ` [Bug target/112987] " mjires at suse dot cz
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: mjires at suse dot cz @ 2023-12-12 17:32 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112987
Bug ID: 112987
Summary: [14 Regression][aarch64] ICE in
aarch64_do_track_speculation, at
config/aarch64/aarch64-speculation.cc:214 since
r14-5886-g426fddcbdad674
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: mjires at suse dot cz
CC: nszabolcs at gmail dot com
Target Milestone: ---
Target: aarch64
Compiling testcase gcc.target/aarch64/eh_return-2.c results in ICE since
r14-5886-g426fddcbdad674.
$ cat eh_return-2.c
/* { dg-do compile } */
/* { dg-final { scan-assembler "add\tsp, sp, x5" } } */
/* { dg-final { scan-assembler "br\tx6" } } */
void
foo (unsigned long off, void *handler)
{
__builtin_eh_return (off, handler);
}
$ aarch64-linux-gnu-gcc eh_return-2.c -mtrack-speculation
during RTL pass: speculation
eh_return-2.c: In function ‘foo’:
eh_return-2.c:9:1: internal compiler error: in aarch64_do_track_speculation, at
config/aarch64/aarch64-speculation.cc:214
9 | }
| ^
0x8f6f6f aarch64_do_track_speculation()
/home/mjires/git/GCC/master/gcc/config/aarch64/aarch64-speculation.cc:214
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
$ aarch64-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=aarch64-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/home/mjires/built/master-aarch64-linux-gnu/libexec/gcc/aarch64-linux-gnu/14.0.0/lto-wrapper
Target: aarch64-linux-gnu
Configured with: /home/mjires/git/GCC/master/configure
--target=aarch64-linux-gnu --disable-bootstrap --enable-languages=c,c++
--disable-multilib --prefix=/home/mjires/built/master-aarch64-linux-gnu/
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 14.0.0 20231207 (experimental) (GCC)
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug target/112987] [14 Regression][aarch64] ICE in aarch64_do_track_speculation, at config/aarch64/aarch64-speculation.cc:214 since r14-5886-g426fddcbdad674
2023-12-12 17:32 [Bug target/112987] New: [14 Regression][aarch64] ICE in aarch64_do_track_speculation, at config/aarch64/aarch64-speculation.cc:214 since r14-5886-g426fddcbdad674 mjires at suse dot cz
@ 2023-12-12 18:05 ` mjires at suse dot cz
2023-12-12 19:05 ` pinskia at gcc dot gnu.org
` (3 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: mjires at suse dot cz @ 2023-12-12 18:05 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112987
--- Comment #1 from Michal Jireš <mjires at suse dot cz> ---
Sorry for initially reporting with outdated GCC. Identical ICE is still present
with:
$ aarch64-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=aarch64-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/home/mjires/built/master/libexec/gcc/aarch64-linux-gnu/14.0.0/lto-wrapper
Target: aarch64-linux-gnu
Configured with: /home/mjires/git/GCC/master/configure
--prefix=/home/mjires/built/master --target=aarch64-linux-gnu
--disable-bootstrap --enable-languages=c,c++ --disable-multilib
--disable-libsanitizer --enable-checking
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 14.0.0 20231212 (experimental) (GCC)
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug target/112987] [14 Regression][aarch64] ICE in aarch64_do_track_speculation, at config/aarch64/aarch64-speculation.cc:214 since r14-5886-g426fddcbdad674
2023-12-12 17:32 [Bug target/112987] New: [14 Regression][aarch64] ICE in aarch64_do_track_speculation, at config/aarch64/aarch64-speculation.cc:214 since r14-5886-g426fddcbdad674 mjires at suse dot cz
2023-12-12 18:05 ` [Bug target/112987] " mjires at suse dot cz
@ 2023-12-12 19:05 ` pinskia at gcc dot gnu.org
2024-01-17 11:46 ` nsz at gcc dot gnu.org
` (2 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: pinskia at gcc dot gnu.org @ 2023-12-12 19:05 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112987
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |14.0
CC| |pinskia at gcc dot gnu.org
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug target/112987] [14 Regression][aarch64] ICE in aarch64_do_track_speculation, at config/aarch64/aarch64-speculation.cc:214 since r14-5886-g426fddcbdad674
2023-12-12 17:32 [Bug target/112987] New: [14 Regression][aarch64] ICE in aarch64_do_track_speculation, at config/aarch64/aarch64-speculation.cc:214 since r14-5886-g426fddcbdad674 mjires at suse dot cz
2023-12-12 18:05 ` [Bug target/112987] " mjires at suse dot cz
2023-12-12 19:05 ` pinskia at gcc dot gnu.org
@ 2024-01-17 11:46 ` nsz at gcc dot gnu.org
2024-01-25 17:23 ` cvs-commit at gcc dot gnu.org
2024-02-01 16:25 ` nsz at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: nsz at gcc dot gnu.org @ 2024-01-17 11:46 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112987
nsz at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever confirmed|0 |1
Last reconfirmed| |2024-01-17
CC| |nsz at gcc dot gnu.org
--- Comment #2 from nsz at gcc dot gnu.org ---
confirmed.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug target/112987] [14 Regression][aarch64] ICE in aarch64_do_track_speculation, at config/aarch64/aarch64-speculation.cc:214 since r14-5886-g426fddcbdad674
2023-12-12 17:32 [Bug target/112987] New: [14 Regression][aarch64] ICE in aarch64_do_track_speculation, at config/aarch64/aarch64-speculation.cc:214 since r14-5886-g426fddcbdad674 mjires at suse dot cz
` (2 preceding siblings ...)
2024-01-17 11:46 ` nsz at gcc dot gnu.org
@ 2024-01-25 17:23 ` cvs-commit at gcc dot gnu.org
2024-02-01 16:25 ` nsz at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2024-01-25 17:23 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112987
--- Comment #3 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Szabolcs Nagy <nsz@gcc.gnu.org>:
https://gcc.gnu.org/g:305fe4f136a3a3a78377a48c55d546000a3ba529
commit r14-8432-g305fe4f136a3a3a78377a48c55d546000a3ba529
Author: Szabolcs Nagy <szabolcs.nagy@arm.com>
Date: Wed Jan 24 18:50:19 2024 +0000
aarch64: Fix eh_return for -mtrack-speculation [PR112987]
Recent commit introduced a conditional branch in eh_return epilogues
that is not compatible with speculation tracking:
commit 426fddcbdad6746fe70e031f707fb07f55dfb405
Author: Szabolcs Nagy <szabolcs.nagy@arm.com>
CommitDate: 2023-11-27 15:52:48 +0000
aarch64: Use br instead of ret for eh_return
Refactor the compare zero and jump pattern and use it to fix the issue.
gcc/ChangeLog:
PR target/112987
* config/aarch64/aarch64.cc (aarch64_gen_compare_zero_and_branch):
New.
(aarch64_expand_epilogue): Use the new function.
(aarch64_split_compare_and_swap): Likewise.
(aarch64_split_atomic_op): Likewise.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug target/112987] [14 Regression][aarch64] ICE in aarch64_do_track_speculation, at config/aarch64/aarch64-speculation.cc:214 since r14-5886-g426fddcbdad674
2023-12-12 17:32 [Bug target/112987] New: [14 Regression][aarch64] ICE in aarch64_do_track_speculation, at config/aarch64/aarch64-speculation.cc:214 since r14-5886-g426fddcbdad674 mjires at suse dot cz
` (3 preceding siblings ...)
2024-01-25 17:23 ` cvs-commit at gcc dot gnu.org
@ 2024-02-01 16:25 ` nsz at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: nsz at gcc dot gnu.org @ 2024-02-01 16:25 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112987
nsz at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from nsz at gcc dot gnu.org ---
fixed for gcc-14 at 305fe4f136a3a3a78377a48c55d546000a3ba529
^ permalink raw reply [flat|nested] 6+ messages in thread
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2023-12-12 17:32 [Bug target/112987] New: [14 Regression][aarch64] ICE in aarch64_do_track_speculation, at config/aarch64/aarch64-speculation.cc:214 since r14-5886-g426fddcbdad674 mjires at suse dot cz
2023-12-12 18:05 ` [Bug target/112987] " mjires at suse dot cz
2023-12-12 19:05 ` pinskia at gcc dot gnu.org
2024-01-17 11:46 ` nsz at gcc dot gnu.org
2024-01-25 17:23 ` cvs-commit at gcc dot gnu.org
2024-02-01 16:25 ` nsz at gcc dot gnu.org
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