NOTE(lanbo.llb): mhlo.disc op will produce 2 outputs, the 2nd output is i64 tensor with single element represent number of valid elements in the 1st o

Adds a dummy Const node to graph_out. The "constant" has the type of data_type and the shape indicated in 'shape'. The dummy node is not a valid Const

Returns the set of (subgraph, oc_cluster) pairs that should be recorded as ancestors for any successor of this node. If the node is in the outer graph

Arrange the insert-point of `op`'s operands in the same block. Do not deal with cross-block operands.

Follows the edges from consumer to producer and visit all the nodes that is reachable from node `n` and have rank larger than `lower_bound`.

Builds a graph for the loop body.

Builds a graph for the loop condition.

Give: with prim::FusionGroup( %p0: Tensor, %p1: Tensor, %p2: Scalar): %1 Tensor = aten::add(%p0, %p1, %p2) return %1 Execute: CastToTensorInputs(sub_

Adds a copy of node_in to graph_out and adds the mapping to copied_node_images.