[WinEHPrepare] Fix catchret successor phi demotion
Summary:
When demoting an SSA value that has a use on a phi and one of the phi's
predecessors terminates with catchret, the edge needs to be split and the
load inserted in the new block, else we'll still have a cross-funclet SSA
value.
Add a test for this, and for the similar case where a def to be spilled is
on and invoke and a critical edge, which was already implemented but
missing a test.
Reviewers: majnemer
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D12065
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@245218 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed