Bitcode: Do not create FNENTRYs for aliases of functions.

There doesn't seem to be any point in doing this.

Differential Revision: https://reviews.llvm.org/D31691

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@299694 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed