SuccessChanges

Summary

  1. [Attributor] Make IntegerState more flexible (details)
Commit 1a74645a70b38b48ff93251f7e7e51b2ab2ab403 by johannes
[Attributor] Make IntegerState more flexible
To make IntegerState more flexible but also less error prone we split it
up into (1) incrementing, (2) decrementing, and (3) bit-tracking states.
This adds functionality compared to before and disallows misuse, e.g.,
"incrementing" updates on a bit-tracking state.
Part of the change is a single operator in the base class which
simplifies helper functions that deal with states.
There are certain functional changes but all of which should actually be
corrections.
The file was modifiedllvm/lib/Transforms/IPO/Attributor.cpp
The file was modifiedllvm/include/llvm/Transforms/IPO/Attributor.h