Cameron McInally 2557ca296a [InstCombine] Add visitFNeg(...) visitor for unary Fneg ...

Also, break out a helper function, namely foldFNegIntoConstant(...), which performs transforms common between visitFNeg(...) and visitFSub(...).

Differential Revision: https://reviews.llvm.org/D61693

llvm-svn: 361188

2019-05-20 19:10:30 +00:00

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