[PATCH] D79766: [mlir][Linalg] Add pass to remove unit-extent dims from tensor operands of Generic ops.

[Mahesh Ravishankar via Phabricator via llvm-commits]

mravishankar created this revision.
Herald added subscribers: llvm-commits, Kayjukh, frgossen, grosul1, Joonsoo, stephenneuendorffer, liufengdb, aartbik, lucyrfox, mgester, arpith-jacob, nicolasvasilache, antiagainst, shauheen, jpienaar, rriddle, mehdi_amini.
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Unit-extent dimensions are typically used for achieving broadcasting
behavior. The pattern added (along with canonicalization patterns
added previously) removes the use of unit-extent dimensions, and
instead uses a more canonical representation of the computation.  This
new pattern is not added as a canonicalization for now since it
entails adding additional reshape operations. A pass is added to
exercise these patterns, along with an API entry to populate a
patterns list with these patterns.

Depends On D79765 <https://reviews.llvm.org/D79765>


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D79766

Files:
  mlir/include/mlir/Dialect/Linalg/Passes.h
  mlir/include/mlir/Dialect/Linalg/Passes.td
  mlir/lib/Dialect/Linalg/IR/LinalgOps.cpp
  mlir/lib/Dialect/Linalg/Transforms/Fusion.cpp
  mlir/test/Dialect/Linalg/drop-unit-extent-dims.mlir

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