James Molloy 50a4c27f97 [LoopUtils,LV] Propagate fast-math flags on generated FCmp instructions ...

We're currently losing any fast-math flags when synthesizing fcmps for
min/max reductions. In LV, make sure we copy over the scalar inst's
flags. In LoopUtils, we know we only ever match patterns with
hasUnsafeAlgebra, so apply that to any synthesized ops.

llvm-svn: 248201

2015-09-21 19:41:19 +00:00

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