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
Summary:
Refactor loop peeling code by moving code for calculating phi invariance
into a separate class that does the calculation. Redescribe and rework
the algorithm in preparation for adding increased functionality. Add
test case that does not exhibit peeling that will be subsequently supported.
Author: Jamie Schmeiser <schmeise@ca.ibm.com>
Reviewed By: mkazantsev (Max Kazantsev)
Differential Revision: https://reviews.llvm.org/D138232
