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Refactored @Max191's PR https://github.com/llvm/llvm-project/pull/94637 to move it to `Tensor` From the original PR >This PR adds fusion by expansion patterns to push a tensor.expand_shape up through a tensor.collapse_shape with non-intersecting reassociations. Sometimes parallel collapse_shape ops like this can block propagation of expand_shape ops, so this allows them to pass through each other. I'm not sure if I put the code/tests in the right places, so let me know where those go if they aren't. cc @MaheshRavishankar @hanhanW --------- Co-authored-by: Max Dawkins <max.dawkins@gmail.com>