https://gcc.gnu.org/bugzilla/show_bug.cgi?id=21161
Jeffrey A. Law <law at redhat dot com> changed:
What |Removed |Added
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Assignee|unassigned at gcc dot gnu.org |law at redhat dot com
--- Comment #12 from Jeffrey A. Law <law at redhat dot com> ---
I've got something that is working on most targets. I'm still refining a bit,
but I'm pretty confident we'll be able to fix in this cycle.
As expected scanning RTL from the setjmp point to figure out where the longjmp
will go (so that we can use the live-in set at the longjmp target rather than
the live set at the setjmp point) is a bit hairy.
It's almost certainly the case that the scanning is not going to work on all
targets. For example MIPS inserts an unspec sequence to fiddle the GOT after
the call and I really don't want to ignore an insn we don't understand. But
again, what I've currently got works on most targets and there's still some
refinements to do to improve coverage.
