[LazyValueInfo] Don't run the more complex predicate handling code for EQ and NE...

[LazyValueInfo] Don't run the more complex predicate handling code for EQ and NE in getPredicateResult

Summary:
Unless I'm mistaken, the special handling for EQ/NE should cover everything and there is no reason to fallthrough to the more complex code. For that matter I'm not sure there's any reason to special case EQ/NE other than avoiding creating temporary ConstantRanges.

This patch moves the complex code into an else so we only do it when we are handling a predicate other than EQ/NE.

Reviewers: anna, reames, resistor, Farhana

Reviewed By: anna

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D34000

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@305086 91177308-0d34-0410-b5e6-96231b3b80d8