// PosBase, Pkg, and Type sections, respectively.
	posBases []string // position bases (i.e., file names)
	pkgs     []*types.Package
	typs     []types.Type

	// laterFns holds functions that need to be invoked at the end of
	// import reading.
	laterFns []func()

	// ifaces holds a list of constructed Interfaces, which need to have
	// Complete called after importing is done.
	ifaces []*types.Interface
}

#include "tensorflow/compiler/mlir/tensorflow/transforms/passes.h"

namespace mlir {
namespace TF {

namespace {

/// Move the ops of `source_block` into `destination_block`, keeping the later's
/// block arguments' type as `block_arguments_type`.
static void moveBlock(Block* source_block, Block* destination_block,
                      TypeRange block_arguments_type,
                      PatternRewriter& rewriter) {