[WinEH] Simplify unreachable catchpads
Summary:
At least for CoreCLR, a catchpad which immediately executes an
`unreachable` instruction indicates that the exception can never have a
matching type, and so such catchpads can be removed, and so can their
catchswitches if the catchswitch becomes empty.
Reviewers: rnk, andrew.w.kaylor, majnemer
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D15846
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256809
91177308-0d34-0410-b5e6-
96231b3b80d8
projects / oota-llvm.git / commit