- [`KT-65443`](https://youtrack.jetbrains.com/issue/KT-65443) [K/N] Implement header caches
- [`KT-4113`](https://youtrack.jetbrains.com/issue/KT-4113) Smart casts for properties to not-null functional types at `invoke` calls
- [`KT-65681`](https://youtrack.jetbrains.com/issue/KT-65681) K2: Improve error message of UPPER_BOUND_VIOLATED when upper bound is a captured type or other non-denotable type

      attrs.getType().getRank() != 0) {
    return std::nullopt;
  }
  int64_t axis = attrs.getValues<IntegerAttr>()[0].getInt();
  return axis < 0 ? axis + rank : axis;
}

/// Returns a `ConvertOp` that casts the elements to a i64 type while retaining
/// the shape of the input value.
static ConvertOp CastValueToI64(Location loc, Value value,
                                PatternRewriter *rewriter) {