[PATCH] D157628: [AArch64][SVE2] Change the cost of extends with S/URHADD to 0

[Kerry McLaughlin via Phabricator via llvm-commits]

kmclaughlin updated this revision to Diff 552059.
kmclaughlin marked 3 inline comments as done.
kmclaughlin added a comment.

- Renamed `isExtShiftRightAdd` to `isExtPartOfAvgExpr`
- Used `dyn_cast_or_null` with casts from `getUniqueUndroppableUser()`
- Added a new match expression for `m_ZExtOrSext` and check the opcodes of the extends match
- Added fixed-width & negative tests


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D157628/new/

https://reviews.llvm.org/D157628

Files:
  llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp
  llvm/lib/Target/AArch64/AArch64TargetTransformInfo.h
  llvm/test/Analysis/CostModel/AArch64/sve2-ext-rhadd.ll

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