[WinEH] Update LCSSA to handle catchswitch with handlers inside and outside a loop

Differential Revision: http://reviews.llvm.org/D15630



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256005 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed