[PATCH] [InstCombine] Teach how to fold a select into a cttz/ctlz with the 'is_zero_undef' flag cleared.

[Andrea Di Biagio]

Ping.


http://reviews.llvm.org/D6891

Files:
  lib/Transforms/InstCombine/InstCombineSelect.cpp
  test/Transforms/InstCombine/intrinsics.ll
  test/Transforms/InstCombine/select-cmp-cttz-ctlz.ll

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