On that topic, should LowerInvoke's "-enable-correct-eh-support" option be
removed, since it appears to be unused? If so, I can prepare a patch.
This option lowers exception handling to setjmp/longjmp, but it uses a
variable called "llvm.sjljeh.jblist" for the list of saved setjmp frames.
I've not found any code that looks at that list to implement throwing an
exception. It looks like this was replaced by SjLjEHPrepare a long time