[PATCH] D54001: [ValueTracking] determine sign of 0.0 from select when matching min/max FP

[Sanjay Patel via Phabricator via llvm-commits]

spatel updated this revision to Diff 172356.
spatel added a comment.

Patch updated:

1. Reduced code by checking for any FP zero followed by mismatch.
2. Added checks and unit tests to ignore vector constants with undef elements.


https://reviews.llvm.org/D54001

Files:
  lib/Analysis/ValueTracking.cpp
  test/Transforms/InstCombine/minmax-fp.ll
  unittests/Analysis/ValueTrackingTest.cpp

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