Add hasProfileSummary and has{Sample|Instrumentation}Profile methods

ProfileSummaryInfo already checks whether the module has sample profile
in determining profile counts. This will also be useful in inliner to
clean up threshold updates.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303204 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed