[mips][micromips] Add predicate 'InMicroMips' at CodeGen patterns for microMIPS instructions
Differential Revision: http://reviews.llvm.org/D6198


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221780 91177308-0d34-0410-b5e6-96231b3b80d8