Summary:
Expand the capabilities of the code for computing how many peels are
needed to make phis determined. A cast gets the peel count for the
value being casted while a binary op gets the maximum of the operands.
Respond to review comments: remove redundant asserts.
Author: Jamie Schmeiser <schmeise@ca.ibm.com>
Reviewed By:mkazantsev (Max Kazantsev),syzaara (Zaara Syeda)
Differential Revision: https://reviews.llvm.org/D138719
2b6683fd5f