[Hexagon] Removing old variants of instructions and updating references.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224612 91177308-0d34-0410-b5e6-96231b3b80d8
CodeGen: do not attempt to invalidate virtual registers for zero-sized phis.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224615 91177308-0d34-0410-b5e6-96231b3b80d8
Add printing the LC_SUB_CLIENT load command with llvm-objdump’s -private-headers.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224616 91177308-0d34-0410-b5e6-96231b3b80d8