Sanjay Patel e4175ff525 [InstCombine] intersect FMF when reassociating FP min/max intrinsics ...

As discussed in PR45478:
https://bugs.llvm.org/show_bug.cgi?id=45478
...propagating FMF from the outer (second) call is not correct,
so intersect them instead.
I suspect we could do better (see TODO comment), but mismatched
FMF is probably too rare to care about.

Differential Revision: https://reviews.llvm.org/D78631

2020-04-24 12:14:03 -04:00

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