[PATCH] D15963: [WinEH] Disallow cyclic unwinds

[Joseph Tremoulet via llvm-commits]

JosephTremoulet created this revision.
JosephTremoulet added reviewers: andrew.w.kaylor, rnk, majnemer.
JosephTremoulet added a subscriber: llvm-commits.

Funclet-based EH personalities/tables likely can't handle these, and they
can't be generated at source, so make them officially illegal in IR as
well.


http://reviews.llvm.org/D15963

Files:
  docs/ExceptionHandling.rst
  lib/IR/Verifier.cpp
  test/CodeGen/WinEH/wineh-cloning.ll
  test/Verifier/invalid-eh.ll

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