Craig Topper f73ff612ca [DAGCombiner] Add one use check to fold (not (and x, y)) -> (or (not x), (not y)) ...

Summary:
If the and has an additional use we shouldn't invert it. That creates an additional instruction.

While there add a one use check to the transform above that looked similar.

Reviewers: spatel, RKSimon

Reviewed By: RKSimon

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D43225

llvm-svn: 325019

2018-02-13 16:25:27 +00:00

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