[CodeGen] skip lifetime end marker in isInTailCallPosition

A lifetime end intrinsic between a tail call and the return should not
prevent the call from being tail call optimized.

Differential Revision: https://reviews.llvm.org/D53519



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@345163 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed