[llvm] [mlir] [MLIR] Generalize expand_shape to take shape as explicit input (PR #90040)

[via llvm-commits]

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@@ -8,6 +8,7 @@
 
 #include "mlir/Dialect/Utils/ReshapeOpsUtils.h"
 
+#include "mlir/Dialect/Arith/IR/Arith.h"
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MaheshRavishankar wrote:

Makes sense. The only reasonable place to put this would be in arith dialect utils.
Kind of a strange place for reshape utils, but the way it works out, it just needs to go there

https://github.com/llvm/llvm-project/pull/90040