add support for setjmp/longjmp based exceptions

llvm-svn: 130938
Cr-Mirrored-From: sso://chromium.googlesource.com/_direct/external/github.com/llvm/llvm-project
Cr-Mirrored-Commit: 7db91cefb27ee862921c6ab14a99387427019d32
1 file changed