Clean up doxygen comments in FunctionAttrs, promoting some non-doxygen
comments, deleting duplicate comments, moving comments to consistently
live on the definition since these are all really internal routines,
etc. NFC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@247520 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed