[Mlir-commits] [mlir] [mlir][Vector] Teach how to materialize UB constant to Vector (PR #125596)

[Diego Caballero]

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@@ -437,6 +437,9 @@ void VectorDialect::initialize() {
 Operation *VectorDialect::materializeConstant(OpBuilder &builder,
                                               Attribute value, Type type,
                                               Location loc) {
+  if (auto poisonAttr = dyn_cast<ub::PoisonAttrInterface>(value))
+    return builder.create<ub::PoisonOp>(loc, type, poisonAttr);
+
   return arith::ConstantOp::materialize(builder, value, type, loc);
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dcaballe wrote:

yes, it happened to me as well. Actually, my first implementation was something like `getContext()->getDialect<ub::UBDialect>()->materializeConstant(...)`. Honestly, it's not clear to me how these dialect/op materialize methods should be used...

https://github.com/llvm/llvm-project/pull/125596