Reid Kleckner deeddeced3 Re-land r228258 and make clang-cl's /EHs- disable -fexceptions again ...

After r228258, Clang started emitting C++ EH IR that LLVM wasn't ready
to deal with, even when exceptions were disabled with /EHs-. This time,
make /EHs- turn off -fexceptions while still emitting exceptional
constructs in functions using __try.  Since Sema rejects C++ exception
handling constructs before CodeGen, landingpads should only appear in
such functions as the result of a __try.

llvm-svn: 228329

2015-02-05 18:56:03 +00:00

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