[PATCH] D42133: [AArch64] Improve code generation of vector mask build

[Evandro Menezes via Phabricator via llvm-commits]

evandro added a comment.

Indeed, the `DUP`s are coming from `AArch64TargetLowering::LowerBUILD_VECTOR()`.

Which approach would be more elegant and which would be the ups and downs of each one?  On one hand, lowering seems to be more efficient in terms of compile time.  On the other hand, pattern matching may be more elegant.


Repository:
  rL LLVM

https://reviews.llvm.org/D42133