[PATCH] D48508: [DAGCombiner] eliminate setcc bool math when input is low-bit of some value

[Sanjay Patel via Phabricator via llvm-commits]

spatel updated this revision to Diff 152592.
spatel marked an inline comment as done.
spatel added a comment.

Patch updated - no functional change intended from the previous rev (test diffs are identical):

1. Refactored to reduce code duplication and improve readability.
2. Replaced getValueSizeInBits() == 1 with getValueType() == MVT::i1.


https://reviews.llvm.org/D48508

Files:
  lib/CodeGen/SelectionDAG/DAGCombiner.cpp
  test/CodeGen/PowerPC/bool-math.ll
  test/CodeGen/X86/bool-math.ll

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