Make ARM hint ranges consistent, and add tests for these ranges

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193238 91177308-0d34-0410-b5e6-96231b3b80d8
[mips][msa] Added support for matching fexp2 from normal IR (i.e. not intrinsics)



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193239 91177308-0d34-0410-b5e6-96231b3b80d8