SuccessChanges

Summary

  1. [Attributor][NFCI] Improve the usage of IntegerStates (details)
Commit 31784248eee166bb158b9304049bd452dfbfbaeb by johannes
[Attributor][NFCI] Improve the usage of IntegerStates
Setting the upper bound directly in the state can be beneficial and 
simplifies the logic. This also exposed more copy&paste type errors.
The file was modifiedllvm/include/llvm/Transforms/IPO/Attributor.h
The file was modifiedllvm/test/Transforms/FunctionAttrs/read_write_returned_arguments_scc.ll
The file was modifiedllvm/lib/Transforms/IPO/Attributor.cpp