[PATCH] D45733: [DAGCombiner] Unfold scalar masked merge if profitable

[Roman Lebedev via Phabricator via llvm-commits]

lebedev.ri updated this revision to Diff 142967.
lebedev.ri added a comment.

- Rebased ontop of revised tests
- Stop handling cases with constant mask. instcombine should unfold them.


Repository:
  rL LLVM

https://reviews.llvm.org/D45733

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

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