[Mlir-commits] [mlir] [mlir][Transforms] Dialect conversion: Fix bug in `computeNecessaryMaterializations` (PR #104630)

[Matthias Springer]

matthias-springer wrote:

Landing this change with the current test case that just checks for an additional `expected-note`. A test case that triggers the `error: null operand found` bug reported by users would require multiple new test patterns and ops to trigger two unresolved materializations in a row.


https://github.com/llvm/llvm-project/pull/104630