[Bug lto/66752] spec2000 255.vortex performance compiled with GCC is ~20% lower than with CLANG

[law at redhat dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66752

--- Comment #8 from Jeffrey A. Law <law at redhat dot com> ---
After tracking down a couple bugs in the FSM support, I'm about ready to check
in a patch that should address the missed jump threads.