[Mlir-commits] [mlir] [mlir][arith] Refine the verifier for arith.constant (PR #86178)

[Andrzej Warzyński]

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@@ -190,6 +190,14 @@ LogicalResult arith::ConstantOp::verify() {
     return emitOpError(
         "value must be an integer, float, or elements attribute");
   }
+
+  // Intializing scalable vectors with elements attribute is not supported
+  // unless it's a vector splot.
+  auto vecType = dyn_cast<VectorType>(type);
+  auto val = dyn_cast<DenseElementsAttr>(getValue());
+  if ((vecType && val) && vecType.isScalable() && !val.isSplat())
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banach-space wrote:

I've not tried it yet, but intend to do so this week. 

One worry that I have is naming - we may want to keep `ScalableVectorType` for when we _do_ update the hierarchy. This is worth trying nonetheless!

https://github.com/llvm/llvm-project/pull/86178