* [Bug middle-end/113364] [14 regression] Failed bootstrap
2024-01-12 20:54 [Bug middle-end/113364] New: [14 regression] Failed bootstrap sjames at gcc dot gnu.org
@ 2024-01-12 20:55 ` sjames at gcc dot gnu.org
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From: sjames at gcc dot gnu.org @ 2024-01-12 20:55 UTC (permalink / raw)
To: gcc-bugs
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--- Comment #1 from Sam James <sjames at gcc dot gnu.org> ---
Ugh, I lost the builddir, so give me an hour or so to get it back...
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From: pinskia at gcc dot gnu.org @ 2024-01-12 20:59 UTC (permalink / raw)
To: gcc-bugs
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |14.0
Keywords| |build, ice-on-valid-code
CC| |pinskia at gcc dot gnu.org
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From: jakub at gcc dot gnu.org @ 2024-01-12 22:36 UTC (permalink / raw)
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 #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Please provide more details, certainly my x86_64-linux and i686-linux
bootstraps went fine.
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To: gcc-bugs
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--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Note the most important part of the command line is `-march=znver2 -O3` .
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From: sjames at gcc dot gnu.org @ 2024-01-13 5:36 UTC (permalink / raw)
To: gcc-bugs
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--- Comment #4 from Sam James <sjames at gcc dot gnu.org> ---
Created attachment 57064
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=57064&action=edit
sanitizer_stack_store.ii
Crashes with:
```
# /var/tmp/portage/sys-devel/gcc-14.0.1.9999/work/build/./gcc/xgcc -c
-shared-libgcc -B/var/tmp/portage/sys-devel/gcc-14.0.1.9999/work/build/./gcc
-nostdinc++ ./.libs/sanitizer_stack_store.ii -std=gnu++14 -m32 -O3
-march=znver2
/var/tmp/portage/sys-devel/gcc-14.0.1.9999/work/gcc-14.0.1.9999/libsanitizer/sanitizer_common/sanitizer_stack_store.cpp:
In member function ‘__sanitizer::uptr*
__sanitizer::StackStore::BlockInfo::GetOrUnpack(__sanitizer::StackStore*)’:
/var/tmp/portage/sys-devel/gcc-14.0.1.9999/work/gcc-14.0.1.9999/libsanitizer/sanitizer_common/sanitizer_stack_store.cpp:253:7:
error: definition in block 31 does not dominate use in block 30
253 | uptr *StackStore::BlockInfo::GetOrUnpack(StackStore *store) {
| ^~~~~~~~~~
for SSA_NAME: vect_value_122.379_589 in statement:
vect_value_122.379_590 = PHI <vect_value_122.379_589(30)>
PHI argument
vect_value_122.379_589
for PHI node
vect_value_122.379_590 = PHI <vect_value_122.379_589(30)>
during GIMPLE pass: vect
/var/tmp/portage/sys-devel/gcc-14.0.1.9999/work/gcc-14.0.1.9999/libsanitizer/sanitizer_common/sanitizer_stack_store.cpp:253:7:
internal compiler error: verify_ssa failed
0x5604d3777a76 verify_ssa(bool, bool) [clone .constprop.0]
/var/tmp/portage/sys-devel/gcc-14.0.1.9999/work/gcc-14.0.1.9999/gcc/tree-ssa.cc:1203
0x5604d4e9b845 execute_function_todo
/var/tmp/portage/sys-devel/gcc-14.0.1.9999/work/gcc-14.0.1.9999/gcc/passes.cc:2095
0x5604d4e9b845 do_per_function
/var/tmp/portage/sys-devel/gcc-14.0.1.9999/work/gcc-14.0.1.9999/gcc/passes.cc:1687
0x5604d4e9b845 execute_todo
/var/tmp/portage/sys-devel/gcc-14.0.1.9999/work/gcc-14.0.1.9999/gcc/passes.cc:2142
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://bugs.gentoo.org/> for instructions.
```
```
# /var/tmp/portage/sys-devel/gcc-14.0.1.9999/work/build/./gcc/xgcc -v
Using built-in specs.
COLLECT_GCC=/var/tmp/portage/sys-devel/gcc-14.0.1.9999/work/build/./gcc/xgcc
Target: x86_64-pc-linux-gnu
Configured with:
/var/tmp/portage/sys-devel/gcc-14.0.1.9999/work/gcc-14.0.1.9999/configure
--host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --prefix=/usr
--bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/14
--includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/14/include
--datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/14
--mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/14/man
--infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/14/info
--with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/14/include/g++-v14
--disable-silent-rules --disable-dependency-tracking
--with-python-dir=/share/gcc-data/x86_64-pc-linux-gnu/14/python
--enable-languages=c,c++,fortran --enable-obsolete --enable-secureplt
--disable-werror --with-system-zlib --enable-nls --without-included-gettext
--disable-libunwind-exceptions --enable-checking=yes,extra,rtl
--with-bugurl=https://bugs.gentoo.org/ --with-pkgversion='Gentoo Hardened
14.0.1 p, commit 9d69e54a3b402b0fad067464bd402e92c14504a9'
--with-gcc-major-version-only --enable-libstdcxx-time --enable-lto
--disable-libstdcxx-pch --enable-shared --enable-threads=posix
--enable-__cxa_atexit --enable-clocale=gnu --enable-multilib
--with-multilib-list=m32,m64 --disable-fixed-point --enable-targets=all
--enable-libgomp --disable-libssp --disable-libada --enable-cet
--disable-systemtap --enable-valgrind-annotations --disable-vtable-verify
--disable-libvtv --with-zstd --with-isl --disable-isl-version-check
--enable-default-pie --enable-host-pie --enable-host-bind-now
--enable-default-ssp --with-build-config='bootstrap-O3 bootstrap-lto
bootstrap-cet'
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 14.0.1 20240112 (experimental)
8b447fa89d5e6b052c9309dfd1dafebdbd829ff9 (Gentoo Hardened 14.0.1 p, commit
9d69e54a3b402b0fad067464bd402e92c14504a9)
```
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To: gcc-bugs
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--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Still happens at r14-7220-gac1a399bf61b04 .
Let me try to reduce it.
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2024-01-13 6:11 ` [Bug middle-end/113364] [14 regression] ICE verify_ssa: `definition in block N does not dominate use in block` with `-O3 -march=znver2` pinskia at gcc dot gnu.org
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To: gcc-bugs
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--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Created attachment 57065
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=57065&action=edit
Reduced testcase
`-O3 -march=znver2 ` is enough with this testcase to reproduce it.
^ permalink raw reply [flat|nested] 24+ messages in thread* [Bug middle-end/113364] [14 regression] ICE verify_ssa: `definition in block N does not dominate use in block` with `-O3 -march=znver2`
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From: pinskia at gcc dot gnu.org @ 2024-01-13 6:11 UTC (permalink / raw)
To: gcc-bugs
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[14 regression] Failed |[14 regression] ICE
|bootstrap |verify_ssa: `definition in
| |block N does not dominate
| |use in block` with `-O3
| |-march=znver2`
Ever confirmed|0 |1
Status|UNCONFIRMED |NEW
Last reconfirmed| |2024-01-13
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@ 2024-01-13 6:27 ` pinskia at gcc dot gnu.org
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From: pinskia at gcc dot gnu.org @ 2024-01-13 6:27 UTC (permalink / raw)
To: gcc-bugs
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |aarch64-linux-gnu
| |x86_64-linux-gnu
--- Comment #7 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Note the testcase also ICEs on aarch64 with just -O3.
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From: tnfchris at gcc dot gnu.org @ 2024-01-13 8:04 UTC (permalink / raw)
To: gcc-bugs
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Tamar Christina <tnfchris at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Assignee|unassigned at gcc dot gnu.org |tnfchris at gcc dot gnu.org
Status|NEW |ASSIGNED
--- Comment #8 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
Hmm curious, does it work for you with --with-build-config='bootstrap-O3'
that's how I tested it before
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From: tnfchris at gcc dot gnu.org @ 2024-01-13 9:03 UTC (permalink / raw)
To: gcc-bugs
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--- Comment #9 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
vect_create_epilog_for_reduction needs to handle the case where the vectorizer
has picked a different exit than the main one.
diff --git a/gcc/tree-vect-loop.cc b/gcc/tree-vect-loop.cc
index eccf0953bba..6f761a4a78f 100644
--- a/gcc/tree-vect-loop.cc
+++ b/gcc/tree-vect-loop.cc
@@ -5965,7 +5965,8 @@ vect_create_epilog_for_reduction (loop_vec_info
loop_vinfo,
loop-closed PHI of the inner loop which we remember as
def for the reduction PHI generation. */
bool double_reduc = false;
- bool main_exit_p = LOOP_VINFO_IV_EXIT (loop_vinfo) == loop_exit;
+ bool main_exit_p = LOOP_VINFO_IV_EXIT (loop_vinfo) == loop_exit
+ && !LOOP_VINFO_EARLY_BREAKS_VECT_PEELED (loop_vinfo);
stmt_vec_info rdef_info = stmt_info;
if (STMT_VINFO_DEF_TYPE (stmt_info) == vect_double_reduction_def)
{
fixes it. But would be good if I can reproduce the bootstrap issue. Will try
with provided options.
^ permalink raw reply [flat|nested] 24+ messages in thread* [Bug middle-end/113364] [14 regression] ICE verify_ssa: `definition in block N does not dominate use in block` with `-O3 -march=znver2`
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From: sjames at gcc dot gnu.org @ 2024-01-13 11:52 UTC (permalink / raw)
To: gcc-bugs
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--- Comment #10 from Sam James <sjames at gcc dot gnu.org> ---
(In reply to Tamar Christina from comment #8)
> Hmm curious, does it work for you with --with-build-config='bootstrap-O3'
> that's how I tested it before
Will have a look. I'll try ignore the bootstrap failure and build userland
stuff now so we can get some other cases if any.
Did you have -march=<some ISA with good enough vector instructions> too? I
imagine bare '-O2' or '-O3' will be ok on amd64.
I built with the above configure args but also:
1. make -j32 -l32 'STAGE1_CFLAGS=-O3 -march=znver2 -pipe' 'BOOT_CFLAGS=-O3
-march=znver2 -pipe' ...
2. CFLAGS=... exported in the env
^ permalink raw reply [flat|nested] 24+ messages in thread* [Bug middle-end/113364] [14 regression] ICE verify_ssa: `definition in block N does not dominate use in block` with `-O3 -march=znver2`
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From: rguenth at gcc dot gnu.org @ 2024-01-15 8:26 UTC (permalink / raw)
To: gcc-bugs
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P1
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From: jakub at gcc dot gnu.org @ 2024-01-15 8:55 UTC (permalink / raw)
To: gcc-bugs
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--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Like in PR113374, started to ICE with one message in
r14-7194-g6cb155a6cf314232248a12bdd395ed4151ae5a28, another one in
r14-7195-g411de96dbf2bdafc7a90ebbfc63e68afd6388d29 and yet another one
r14-7196-g99c0a540d6689ede068f9ba98af6f38c3cd71362 which is what we get until
latest trunk.
^ permalink raw reply [flat|nested] 24+ messages in thread* [Bug middle-end/113364] [14 regression] ICE verify_ssa: `definition in block N does not dominate use in block` with `-O3 -march=znver2`
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From: rguenth at gcc dot gnu.org @ 2024-01-23 8:28 UTC (permalink / raw)
To: gcc-bugs
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed|2024-01-13 00:00:00 |2024-1-23
--- Comment #12 from Richard Biener <rguenth at gcc dot gnu.org> ---
Re-confirmed after my fixes btw.
^ permalink raw reply [flat|nested] 24+ messages in thread* [Bug middle-end/113364] [14 regression] ICE verify_ssa: `definition in block N does not dominate use in block` with `-O3 -march=znver2`
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From: tnfchris at gcc dot gnu.org @ 2024-01-23 8:31 UTC (permalink / raw)
To: gcc-bugs
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--- Comment #13 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
Yes I had to rerun my baseline after updating trunk. Will post patch once peak
finishes
^ permalink raw reply [flat|nested] 24+ messages in thread* [Bug middle-end/113364] [14 regression] ICE verify_ssa: `definition in block N does not dominate use in block` with `-O3 -march=znver2`
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To: gcc-bugs
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--- Comment #14 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
Yes I had to rerun my baseline after updating trunk. Will post patch once peak
finishes
^ permalink raw reply [flat|nested] 24+ messages in thread* [Bug middle-end/113364] [14 regression] ICE verify_ssa: `definition in block N does not dominate use in block` with `-O3 -march=znver2`
2024-01-12 20:54 [Bug middle-end/113364] New: [14 regression] Failed bootstrap sjames at gcc dot gnu.org
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From: tnfchris at gcc dot gnu.org @ 2024-01-23 14:11 UTC (permalink / raw)
To: gcc-bugs
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--- Comment #15 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
Ok, the fix fixes the ICE but after rebasing to trunk I get a misscompile
during bootstrap which miscompiles the x86 backend.
This is likely related to https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113539
so tracking it down...
^ permalink raw reply [flat|nested] 24+ messages in thread* [Bug middle-end/113364] [14 regression] ICE verify_ssa: `definition in block N does not dominate use in block` with `-O3 -march=znver2`
2024-01-12 20:54 [Bug middle-end/113364] New: [14 regression] Failed bootstrap sjames at gcc dot gnu.org
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2024-01-23 14:11 ` tnfchris at gcc dot gnu.org
@ 2024-01-23 15:48 ` tnfchris at gcc dot gnu.org
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From: tnfchris at gcc dot gnu.org @ 2024-01-23 15:48 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113364
--- Comment #16 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
Ok, I've submitted the patch since the ICE and miscompare are unrelated.
I'll keep this ticket open in any case. The miscompares didn't happen based on
commits from ~2 weeks ago, So this will give me a place to start.
Hopefully send a patch for those tomorrow.
^ permalink raw reply [flat|nested] 24+ messages in thread* [Bug middle-end/113364] [14 regression] ICE verify_ssa: `definition in block N does not dominate use in block` with `-O3 -march=znver2`
2024-01-12 20:54 [Bug middle-end/113364] New: [14 regression] Failed bootstrap sjames at gcc dot gnu.org
` (18 preceding siblings ...)
2024-01-23 15:48 ` tnfchris at gcc dot gnu.org
@ 2024-01-24 7:37 ` cvs-commit at gcc dot gnu.org
2024-01-24 7:40 ` tnfchris at gcc dot gnu.org
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From: cvs-commit at gcc dot gnu.org @ 2024-01-24 7:37 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113364
--- Comment #17 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Tamar Christina <tnfchris@gcc.gnu.org>:
https://gcc.gnu.org/g:72429448fd16733f876b282bb37a0653049c446d
commit r14-8382-g72429448fd16733f876b282bb37a0653049c446d
Author: Tamar Christina <tamar.christina@arm.com>
Date: Wed Jan 24 07:37:17 2024 +0000
middle-end: fix epilog reductions when vector iters peeled [PR113364]
This fixes a bug where vect_create_epilog_for_reduction does not handle the
case where all exits are early exits. In this case we should do like
induction
handling code does and not have a main exit.
This shows that some new miscompiles are happening (stage3 is likely
miscompiled)
but that's unrelated to this patch and I'll look at it next.
gcc/ChangeLog:
PR tree-optimization/113364
* tree-vect-loop.cc (vect_create_epilog_for_reduction): If all
exits all
early exits then we must reduce from the first offset for all of
them.
gcc/testsuite/ChangeLog:
PR tree-optimization/113364
* gcc.dg/vect/vect-early-break_107-pr113364.c: New test.
^ permalink raw reply [flat|nested] 24+ messages in thread* [Bug middle-end/113364] [14 regression] ICE verify_ssa: `definition in block N does not dominate use in block` with `-O3 -march=znver2`
2024-01-12 20:54 [Bug middle-end/113364] New: [14 regression] Failed bootstrap sjames at gcc dot gnu.org
` (19 preceding siblings ...)
2024-01-24 7:37 ` cvs-commit at gcc dot gnu.org
@ 2024-01-24 7:40 ` tnfchris at gcc dot gnu.org
2024-01-24 7:42 ` tnfchris at gcc dot gnu.org
2024-01-24 7:43 ` tnfchris at gcc dot gnu.org
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From: tnfchris at gcc dot gnu.org @ 2024-01-24 7:40 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113364
Tamar Christina <tnfchris at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |dcb314 at hotmail dot com
--- Comment #18 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
*** Bug 113561 has been marked as a duplicate of this bug. ***
^ permalink raw reply [flat|nested] 24+ messages in thread* [Bug middle-end/113364] [14 regression] ICE verify_ssa: `definition in block N does not dominate use in block` with `-O3 -march=znver2`
2024-01-12 20:54 [Bug middle-end/113364] New: [14 regression] Failed bootstrap sjames at gcc dot gnu.org
` (20 preceding siblings ...)
2024-01-24 7:40 ` tnfchris at gcc dot gnu.org
@ 2024-01-24 7:42 ` tnfchris at gcc dot gnu.org
2024-01-24 7:43 ` tnfchris at gcc dot gnu.org
22 siblings, 0 replies; 24+ messages in thread
From: tnfchris at gcc dot gnu.org @ 2024-01-24 7:42 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113364
--- Comment #19 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
*** Bug 113555 has been marked as a duplicate of this bug. ***
^ permalink raw reply [flat|nested] 24+ messages in thread* [Bug middle-end/113364] [14 regression] ICE verify_ssa: `definition in block N does not dominate use in block` with `-O3 -march=znver2`
2024-01-12 20:54 [Bug middle-end/113364] New: [14 regression] Failed bootstrap sjames at gcc dot gnu.org
` (21 preceding siblings ...)
2024-01-24 7:42 ` tnfchris at gcc dot gnu.org
@ 2024-01-24 7:43 ` tnfchris at gcc dot gnu.org
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From: tnfchris at gcc dot gnu.org @ 2024-01-24 7:43 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113364
Tamar Christina <tnfchris at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |FIXED
Status|ASSIGNED |RESOLVED
--- Comment #20 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
I'll continue with the miscompile in PR113539 which I think is a duplicate of
PR113467 which I'll verify now.
^ permalink raw reply [flat|nested] 24+ messages in thread