Sanjay Patel fbb1b43f13 [ValueTracking] enhance matching of umin/umax with 'not' operands ...

The cmyk test is based on the known regression that resulted from:
rGf2fbdf76d8d0

This improves on the equivalent signed min/max change:
rG867f0c3c4d8c

The underlying icmp equivalence is:
  ~X pred ~Y --> Y pred X

For an icmp with constant, canonicalization results in a swapped pred:
  ~X < C -->  X > ~C

2020-04-06 11:51:59 -04:00

9.1 KiB

Raw Blame History

View Raw