Fix signed-unsigned comparison warning.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174387 91177308-0d34-0410-b5e6-96231b3b80d8
Fix comment formatting


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174388 91177308-0d34-0410-b5e6-96231b3b80d8
Hexagon: Add V4 compare instructions. Enable relationship mapping
for the existing instructions.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174389 91177308-0d34-0410-b5e6-96231b3b80d8
Fix comments


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174390 91177308-0d34-0410-b5e6-96231b3b80d8