[PATCH] D53236: [SelectionDAG] swap select_cc operands to enable folding

[Alexandros Lamprineas via Phabricator via llvm-commits]

labrinea updated this revision to Diff 171488.
labrinea added a comment.

I've autogenerated the filecheck lines to show the diff compared to the trunk codegen. For making sure we never fall-through to the next block, having changed the CC but not swapped (N2, N3), I've moved all the preconditions to the beginning of the block (instead of moving the block into a helper function).


https://reviews.llvm.org/D53236

Files:
  lib/CodeGen/SelectionDAG/DAGCombiner.cpp
  test/CodeGen/AArch64/select_cc.ll
  test/CodeGen/Thumb/branchless-cmp.ll

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