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* [Bug tree-optimization/114555] New: ICE: definition in block 14 does not dominate use in block 15 at -O and above with _BitInt() bitfield
@ 2024-04-02 7:24 zsojka at seznam dot cz
2024-04-03 11:26 ` [Bug tree-optimization/114555] " zsojka at seznam dot cz
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: zsojka at seznam dot cz @ 2024-04-02 7:24 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114555
Bug ID: 114555
Summary: ICE: definition in block 14 does not dominate use in
block 15 at -O and above with _BitInt() bitfield
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
CC: jakub at gcc dot gnu.org
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Target: x86_64-pc-linux-gnu
Created attachment 57843
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=57843&action=edit
reduced testcase
Compiler output:
$ x86_64-pc-linux-gnu-gcc -O testcase.c
testcase.c: In function 'foo':
testcase.c:10:1: error: definition in block 14 does not dominate use in block
15
10 | foo (void)
| ^~~
for SSA_NAME: _15 in statement:
_14 = PHI <_13(2), _15(15)>
PHI argument
_15
for PHI node
_14 = PHI <_13(2), _15(15)>
during GIMPLE pass: bitintlower
testcase.c:10:1: internal compiler error: verify_ssa failed
0x17913a0 verify_ssa(bool, bool)
/repo/gcc-trunk/gcc/tree-ssa.cc:1203
0x13d19e5 execute_function_todo
/repo/gcc-trunk/gcc/passes.cc:2095
0x13d1e4e execute_todo
/repo/gcc-trunk/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://gcc.gnu.org/bugs/> for instructions.
$ x86_64-pc-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest-amd64/bin/x86_64-pc-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-r14-9731-20240331183750-gb313baba57f-checking-yes-rtl-df-extra-amd64/bin/../libexec/gcc/x86_64-pc-linux-gnu/14.0.1/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra
--with-cloog --with-ppl --with-isl --build=x86_64-pc-linux-gnu
--host=x86_64-pc-linux-gnu --target=x86_64-pc-linux-gnu
--with-ld=/usr/bin/x86_64-pc-linux-gnu-ld
--with-as=/usr/bin/x86_64-pc-linux-gnu-as --enable-libsanitizer
--disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-r14-9731-20240331183750-gb313baba57f-checking-yes-rtl-df-extra-amd64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 14.0.1 20240331 (experimental) (GCC)
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug tree-optimization/114555] ICE: definition in block 14 does not dominate use in block 15 at -O and above with _BitInt() bitfield
2024-04-02 7:24 [Bug tree-optimization/114555] New: ICE: definition in block 14 does not dominate use in block 15 at -O and above with _BitInt() bitfield zsojka at seznam dot cz
@ 2024-04-03 11:26 ` zsojka at seznam dot cz
2024-04-03 13:59 ` jakub at gcc dot gnu.org
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: zsojka at seznam dot cz @ 2024-04-03 11:26 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114555
--- Comment #1 from Zdenek Sojka <zsojka at seznam dot cz> ---
Created attachment 57860
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=57860&action=edit
another testcase, failing with -O -fno-tree-forwprop
Compiler output:
$ x86_64-pc-linux-gnu-gcc -O -fno-tree-forwprop testcase2.c
testcase2.c: In function 'foo':
testcase2.c:9:1: error: definition in block 14 does not dominate use in block
15
9 | foo(void)
| ^~~
for SSA_NAME: _17 in statement:
_16 = PHI <_15(2), _17(15)>
PHI argument
_17
for PHI node
_16 = PHI <_15(2), _17(15)>
during GIMPLE pass: bitintlower
testcase2.c:9:1: internal compiler error: verify_ssa failed
0x177b02f verify_ssa(bool, bool)
/repo/gcc-trunk/gcc/tree-ssa.cc:1203
0x13cc2c5 execute_function_todo
/repo/gcc-trunk/gcc/passes.cc:2095
0x13cc72e execute_todo
/repo/gcc-trunk/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://gcc.gnu.org/bugs/> for instructions.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug tree-optimization/114555] ICE: definition in block 14 does not dominate use in block 15 at -O and above with _BitInt() bitfield
2024-04-02 7:24 [Bug tree-optimization/114555] New: ICE: definition in block 14 does not dominate use in block 15 at -O and above with _BitInt() bitfield zsojka at seznam dot cz
2024-04-03 11:26 ` [Bug tree-optimization/114555] " zsojka at seznam dot cz
@ 2024-04-03 13:59 ` jakub at gcc dot gnu.org
2024-04-04 8:47 ` cvs-commit at gcc dot gnu.org
2024-04-04 9:46 ` jakub at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: jakub at gcc dot gnu.org @ 2024-04-03 13:59 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114555
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
Last reconfirmed| |2024-04-03
Status|UNCONFIRMED |ASSIGNED
Ever confirmed|0 |1
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 57862
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=57862&action=edit
gcc14-pr114555.patch
So far lightly tested patch.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug tree-optimization/114555] ICE: definition in block 14 does not dominate use in block 15 at -O and above with _BitInt() bitfield
2024-04-02 7:24 [Bug tree-optimization/114555] New: ICE: definition in block 14 does not dominate use in block 15 at -O and above with _BitInt() bitfield zsojka at seznam dot cz
2024-04-03 11:26 ` [Bug tree-optimization/114555] " zsojka at seznam dot cz
2024-04-03 13:59 ` jakub at gcc dot gnu.org
@ 2024-04-04 8:47 ` cvs-commit at gcc dot gnu.org
2024-04-04 9:46 ` jakub at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2024-04-04 8:47 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114555
--- Comment #3 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jakub Jelinek <jakub@gcc.gnu.org>:
https://gcc.gnu.org/g:48530efdcccb154d3ed200246384edc162debc5d
commit r14-9783-g48530efdcccb154d3ed200246384edc162debc5d
Author: Jakub Jelinek <jakub@redhat.com>
Date: Thu Apr 4 10:47:00 2024 +0200
bitint: Handle m_bitfld_load cast in outer m_cast_conditional [PR114555]
We ICE on the following testcase, because we use result of a PHI node
which is only conditional because of a m_cast_conditional on the outermost
loops PHI node argument and so is invalid SSA form.
The following patch fixes it like similar cases elsewhere by adding
needed intervening PHI(s).
2024-04-04 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/114555
* gimple-lower-bitint.cc (bitint_large_huge::handle_cast): For
m_bitfld_load and save_cast_conditional add any needed PHIs
and adjust t4 accordingly.
* gcc.dg/bitint-103.c: New test.
* gcc.dg/bitint-104.c: New test.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug tree-optimization/114555] ICE: definition in block 14 does not dominate use in block 15 at -O and above with _BitInt() bitfield
2024-04-02 7:24 [Bug tree-optimization/114555] New: ICE: definition in block 14 does not dominate use in block 15 at -O and above with _BitInt() bitfield zsojka at seznam dot cz
` (2 preceding siblings ...)
2024-04-04 8:47 ` cvs-commit at gcc dot gnu.org
@ 2024-04-04 9:46 ` jakub at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: jakub at gcc dot gnu.org @ 2024-04-04 9:46 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114555
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed.
^ permalink raw reply [flat|nested] 5+ messages in thread
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2024-04-02 7:24 [Bug tree-optimization/114555] New: ICE: definition in block 14 does not dominate use in block 15 at -O and above with _BitInt() bitfield zsojka at seznam dot cz
2024-04-03 11:26 ` [Bug tree-optimization/114555] " zsojka at seznam dot cz
2024-04-03 13:59 ` jakub at gcc dot gnu.org
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