[PATCH] D46031: [DAGCombiner] Masked merge: if 'B' is constant, de-canonicalize the pattern (invert the mask).

[Roman Lebedev via Phabricator via llvm-commits]

lebedev.ri updated this revision to Diff 144310.
lebedev.ri marked 3 inline comments as done.
lebedev.ri retitled this revision from "[DAGCombiner] DON'T unfold scalar masked merge if 'B' is constant" to "[DAGCombiner] Masked merge: if 'B' is constant, de-canonicalize the pattern (invert the mask).".
lebedev.ri edited the summary of this revision.
lebedev.ri added a comment.

Assuming we'll manage to get https://reviews.llvm.org/D46073, this should do it.


Repository:
  rL LLVM

https://reviews.llvm.org/D46031

Files:
  lib/CodeGen/SelectionDAG/DAGCombiner.cpp
  test/CodeGen/AArch64/unfold-masked-merge-scalar-variablemask.ll
  test/CodeGen/X86/unfold-masked-merge-scalar-variablemask.ll

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