Trailing linefeed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183369 91177308-0d34-0410-b5e6-96231b3b80d8
R600OptimizeVectorRegisters.cpp: Suppress a warning. [-Wunused-variable]

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183370 91177308-0d34-0410-b5e6-96231b3b80d8
R600OptimizeVectorRegisters.cpp: Tweak a warning. [-Wsometimes-uninitialized]

FIXME: Is it false alarm?

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183371 91177308-0d34-0410-b5e6-96231b3b80d8