Add a profile summary class specific to instrumentation profiles.

Modify ProfileSummary class to make it not instrumented profile specific.
Add a new InstrumentedProfileSummary class that inherits from ProfileSummary.

Differential Revision: http://reviews.llvm.org/D17310



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@261119 91177308-0d34-0410-b5e6-96231b3b80d8
8 files changed