https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104540
Bug ID: 104540
Summary: ICE: SIGSEGV in cfi_oprnd_equal_p with -O2
-fharden-conditional-branches -mforce-drap
-mstackrealign --param=max-grow-copy-bb-insns=125
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Target: x86_64-pc-linux-gnu
Created attachment 52442
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=52442&action=edit
reduced testcase
Compiler output:
$ x86_64-pc-linux-gnu-gcc -O2 -fharden-conditional-branches -mforce-drap
-mstackrealign --param=max-grow-copy-bb-insns=125 testcase.C
during RTL pass: dwarf2
testcase.C: In function 'void foo()':
testcase.C:19:1: internal compiler error: Segmentation fault
19 | }
| ^
0x166367f crash_signal
/repo/gcc-trunk/gcc/toplev.cc:322
0x11e1770 cfa_reg::operator==(cfa_reg const&) const
/repo/gcc-trunk/gcc/dwarf2out.h:144
0x11e1770 cfa_equal_p(dw_cfa_location const*, dw_cfa_location const*)
/repo/gcc-trunk/gcc/dwarf2cfi.cc:765
0x11e1a99 cfi_row_equal_p
/repo/gcc-trunk/gcc/dwarf2cfi.cc:831
0x11e534a maybe_record_trace_start
/repo/gcc-trunk/gcc/dwarf2cfi.cc:2565
0x11e590b create_trace_edges
/repo/gcc-trunk/gcc/dwarf2cfi.cc:2679
0x11e5f16 scan_trace
/repo/gcc-trunk/gcc/dwarf2cfi.cc:2903
0x11e7303 create_cfi_notes
/repo/gcc-trunk/gcc/dwarf2cfi.cc:2930
0x11e7303 execute_dwarf2_frame
/repo/gcc-trunk/gcc/dwarf2cfi.cc:3301
0x11e7303 execute
/repo/gcc-trunk/gcc/dwarf2cfi.cc:3789
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-r12-7228-20220214143106-g0a1a3afb5fb-checking-yes-rtl-df-extra-amd64/bin/../libexec/gcc/x86_64-pc-linux-gnu/12.0.1/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 --disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-r12-7228-20220214143106-g0a1a3afb5fb-checking-yes-rtl-df-extra-amd64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 12.0.1 20220214 (experimental) (GCC)
