https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64003
--- Comment #3 from dmalcolm at gcc dot gnu.org --- fwiw, "insn" seems to be: (jump_insn:TI 10 4 56 2 (set (pc) (if_then_else (eq (reg:CCGC 17 flags) (const_int 0 [0])) (label_ref 29) (pc))) /home/david/coding-3/gcc-git-jit-valgrind/get-attr-length-i386.c:3 610 {*jcc_1} (int_list:REG_BR_PROB 2000 (nil)) -> 29)