[Mlir-commits] [mlir] [mlir][Math] Fix 0-rank support for PolynomialApproximation (PR #114826)

[Benjamin Maxwell]

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@@ -43,20 +43,18 @@ using namespace mlir::vector;
 struct VectorShape {
   ArrayRef<int64_t> sizes;
   ArrayRef<bool> scalableFlags;
-
-  bool empty() const { return sizes.empty(); }
 };
 
 // Returns vector shape if the type is a vector. Returns an empty shape if it is
 // not a vector.
-static VectorShape vectorShape(Type type) {
+static std::optional<VectorShape> vectorShape(Type type) {
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MacDue wrote:

nit: Update doc

https://github.com/llvm/llvm-project/pull/114826