https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113988
--- Comment #26 from Zdenek Sojka <zsojka at seznam dot cz> --- Created attachment 57548 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=57548&action=edit testcase failing with -O -m32 This testcase does not need -mavx512f, but -m32 instead: $ x86_64-pc-linux-gnu-gcc -O -m32 testcase32.c during GIMPLE pass: bitintlower testcase32.c: In function 'foo': testcase32.c:6:1: internal compiler error: in handle_cast, at gimple-lower-bitint.cc:1559 6 | foo(void) | ^~~ 0xd784d7 handle_cast /repo/gcc-trunk/gcc/gimple-lower-bitint.cc:1559 0x2697a04 lower_mergeable_stmt /repo/gcc-trunk/gcc/gimple-lower-bitint.cc:2525 0x269bdec lower_stmt /repo/gcc-trunk/gcc/gimple-lower-bitint.cc:5459 0x269ed49 gimple_lower_bitint /repo/gcc-trunk/gcc/gimple-lower-bitint.cc:6759 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.