Fix one-after-the-end type metadata handling in globalsplit.

Itanium ABI may have an address point one byte after the end of a
vtable. When such vtable global is split, the !type metadata needs to
follow the right vtable.

Differential Revision: https://reviews.llvm.org/D30716

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@297236 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed