Sanjoy Das ab0626e35f Nonnull elements in OperandBundleCallSites are not all Instructions ...

`CloneAndPruneIntoFromInst` sometimes RAUW's dead instructions with
`undef` before erasing them (to avoid deleting instructions that still
have uses).  This changes the `WeakVH` in `OperandBundleCallSites` to
hold an `undef`, and we need to guard for this situation in eventuality
in `llvm::InlineFunction`.

llvm-svn: 256110

2015-12-19 22:40:28 +00:00

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