https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102477
--- Comment #3 from Zdenek Sojka <zsojka at seznam dot cz> --- Created attachment 51517 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=51517&action=edit different testcase failing at -O without __builtin_shufflevector() $ x86_64-pc-linux-gnu-gcc -O testcase.c during RTL pass: expand testcase.c: In function 'foo': testcase.c:7:9: internal compiler error: in emit_move_insn, at expr.c:4026 7 | V v = -(g >> sizeof (g) - 1); | ^~~~~~~~~~~~~~~~~~~~~~ 0x6b8206 emit_move_insn(rtx_def*, rtx_def*) /repo/gcc-trunk/gcc/expr.c:4026 0xe36893 expand_gimple_stmt_1 /repo/gcc-trunk/gcc/cfgexpand.c:4006 0xe36893 expand_gimple_stmt /repo/gcc-trunk/gcc/cfgexpand.c:4040 0xe3c98f expand_gimple_basic_block /repo/gcc-trunk/gcc/cfgexpand.c:6082 0xe3e55e execute /repo/gcc-trunk/gcc/cfgexpand.c:6808 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.
