Simplify ELFObjectWriter::ExecutePostLayoutBinding.

No functionality change. This removes the last use of AliasedSymbol in
ELFObjectWriter.cpp.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207424 91177308-0d34-0410-b5e6-96231b3b80d8
InstCombine: don't drop 'inalloca' in PromoteCastOfAllocation (PR19569)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207426 91177308-0d34-0410-b5e6-96231b3b80d8