https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103793
Bug ID: 103793
Summary: [12 Regression] ICE: in to_reg_br_prob_base, at
profile-count.h:277 with -O3
-fno-guess-branch-probability
Product: gcc
Version: 12.0
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
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Created attachment 52040
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=52040&action=edit
reduced testcase
Compiler output:
$ x86_64-pc-linux-gnu-gcc -O3 -fno-guess-branch-probability testcase.c
during GIMPLE pass: lsplit
testcase.c: In function 'foo':
testcase.c:4:1: internal compiler error: in to_reg_br_prob_base, at
profile-count.h:277
4 | foo (int x, int w)
| ^~~
0x7c38c2 profile_probability::to_reg_br_prob_base() const
/repo/gcc-trunk/gcc/profile-count.h:277
0x7c38c2 profile_probability::to_reg_br_prob_base() const
/repo/gcc-trunk/gcc/profile-count.h:275
0x7c38c2 split_loop
/repo/gcc-trunk/gcc/tree-ssa-loop-split.c:630
0x14ea62b tree_ssa_split_loops
/repo/gcc-trunk/gcc/tree-ssa-loop-split.c:1693
Please submit a full bug report,
with preprocessed source if appropriate.
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/bin/x86_64-pc-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-r12-6087-20211220211250-g51a24e4a984-checking-yes-rtl-df-extra-amd64/bin/../libexec/gcc/x86_64-pc-linux-gnu/12.0.0/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-r12-6087-20211220211250-g51a24e4a984-checking-yes-rtl-df-extra-amd64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 12.0.0 20211221 (experimental) (GCC)
