[PATCH] D62699: [InlineCost] Add support for unary fneg.

[Craig Topper via Phabricator via llvm-commits]

craig.topper added a comment.

The only optimizations that are in simplifyFNegInst currently are constant folding and (fneg (fneg X))->X.  The constant folding case would already have been supported by using visitUnaryInstruction. For the (fneg (fneg X)) case, will InlineCost be able to do something if one fneg is in the caller and the other is in the callee?


Repository:
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  https://reviews.llvm.org/D62699/new/

https://reviews.llvm.org/D62699