https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105049
Bug ID: 105049
Summary: ICE: in build_vector_from_val, at tree.cc:2119 with -O
-fno-tree-forwprop
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 52685
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=52685&action=edit
reduced testcase
Compiler output:
$ x86_64-pc-linux-gnu-gcc -O -fno-tree-forwprop testcase.c
during GIMPLE pass: veclower2
testcase.c: In function 'foo':
testcase.c:6:1: internal compiler error: in build_vector_from_val, at
tree.cc:2119
6 | foo (void)
| ^~~
0x8077e9 build_vector_from_val(tree_node*, tree_node*)
/repo/gcc-trunk/gcc/tree.cc:2119
0x15ff0aa expand_vector_operations_1
/repo/gcc-trunk/gcc/tree-vect-generic.cc:2176
0x15ff0aa expand_vector_operations
/repo/gcc-trunk/gcc/tree-vect-generic.cc:2372
0x15ff0aa execute
/repo/gcc-trunk/gcc/tree-vect-generic.cc:2418
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-r12-7804-20220324143116-g346ab5a54a8-checking-yes-rtl-df-extra-nobootstrap-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
--disable-bootstrap --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-r12-7804-20220324143116-g346ab5a54a8-checking-yes-rtl-df-extra-nobootstrap-amd64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 12.0.1 20220324 (experimental) (GCC)
