MCSubtargetInfo in the subclasses into MCTargetAsmParser and define a member function getSTI. This is done in preparation for making changes to shrink the size of MCRelaxableFragment. (see http://reviews.llvm.org/D14346). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@253124 91177308-0d34-0410-b5e6-96231b3b80d8