[PATCH] D130177: [Matrix] Simplify matmuls with scalars

[Francis Visoiu Mistrih via Phabricator via llvm-commits]

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If one of the operands is a transposed splat, the transpose can be
removed.

This is useful to simplify when transposes are distributed to operands
of a matmul:

- k^T -> k
- (A * k)^t -> A^t * k


https://reviews.llvm.org/D130177

Files:
  llvm/lib/Transforms/Scalar/LowerMatrixIntrinsics.cpp
  llvm/test/Transforms/LowerMatrixIntrinsics/transpose-opts.ll

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