tree 500614dc37cafce2fc66a8080d07d13ad4b0eddb
parent e76811b8ad4ea93f41f0b3f908f37100e83240c6
author Sanjay Patel <spatel@rotateright.com> 1544123936 +0000
committer Sanjay Patel <spatel@rotateright.com> 1544123936 +0000

[DAGCombiner] don't hoist logic op if operands have other uses, part 2

The PPC test with 2 extra uses seems clearly better by avoiding this transform.
With 1 extra use, we also prevent an extra register move (although that might
be an RA problem). The general rule should be to only make a change here if
it is always profitable. The x86 diffs are all neutral.