David Majnemer 3337064a47 [WinEH] Sink UnwindHelp completely out of IR ...

We don't need to represent UnwindHelp in IR.  Instead, we can use the
knowledge that we are emitting the parent function to decide if we
should create the UnwindHelp stack object.

llvm-svn: 234061

2015-04-03 22:32:26 +00:00

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