David Majnemer c640f863e0 [WinEH] Don't visit the same catchswitch twice ...

We visited the same catchswitch twice because it was both the child of
another funclet and the predecessor of a cleanuppad.

Instead, change the numbering algorithm to only recurse if the unwind
destination of the inner funclet agrees with the unwind destination of
the catchswitch.

This fixes PR25926.

llvm-svn: 256317

2015-12-23 03:59:04 +00:00

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