This patch introduces RegisterOperand class into Mips FPU instruction definitions and adds dedicated parser methods to MipsAsmParser. It is the first in a series of patches that should fix the problems with parsing Mips FPU instructions and optimize the code in MipsAsmParser.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184716 91177308-0d34-0410-b5e6-96231b3b80d8