Make ranges and range lists be a discrete entity that can be located
and emitted per function and CU. Begins coalescing ranges as a first
class entity through debug info. No functional change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@196178 91177308-0d34-0410-b5e6-96231b3b80d8
Reorder member function declarations to match source order.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@196179 91177308-0d34-0410-b5e6-96231b3b80d8
Update doxygen tags.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@196180 91177308-0d34-0410-b5e6-96231b3b80d8
Refactor the handling of lexical block and inline scope ranges
into a single function. No functional change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@196181 91177308-0d34-0410-b5e6-96231b3b80d8
Added MachineBlockFrequencyInfo::view for displaying the block frequency propagation graph via graphviz.

This is useful for debugging issues in the BlockFrequency implementation
since one can easily visualize where probability mass and other errors
occur in the propagation.

This is the MI version of r194654.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@196183 91177308-0d34-0410-b5e6-96231b3b80d8