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)
