[PATCH] D20174: [InstCombine] Allow removal of PHI cycles which only contain PHIs

[silviu.baranga@arm.com via llvm-commits]

sbaranga updated this revision to Diff 57335.
sbaranga added a comment.

Only test incoming values if they dominate PN.

Note that all incoming values need to be PHIs in order for us to do this test,
so there's no need to test for non-instructions (since PHIs are instructions).


http://reviews.llvm.org/D20174

Files:
  lib/Transforms/InstCombine/InstCombinePHI.cpp
  test/Transforms/InstCombine/phi-cycle.ll

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