Use array_lengthof instead of sizeof(array)/sizeof(element) in a tablegen output.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222410 91177308-0d34-0410-b5e6-96231b3b80d8
Remove unnecessary extra spaces from tablegen register info output.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222411 91177308-0d34-0410-b5e6-96231b3b80d8
Fix a typo in a comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222412 91177308-0d34-0410-b5e6-96231b3b80d8