[PM] CorrelatedValuePropagation: pass state to function. NFCI.

While here, convert the logic of the pass to use static function(s).
This is in preparation for porting this pass to the new PM.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@270734 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed