// ```
//
// `%merged_control` is a NoOp control barrier in this case.
//
// Checks if the value `control` is a NoOp control barrier.
bool IsNoOpControlBarrier(Value control) {
  if (!mlir::isa<ControlType>(control.getType())) return false;

  auto control_island = dyn_cast_or_null<IslandOp>(control.getDefiningOp());
  if (!control_island) return false;

  // All islands perfectly wrap a single op is an invariant of this pass and

import org.codehaus.groovy.control.CompilationUnit;
import org.codehaus.groovy.control.CompilePhase;
import org.codehaus.groovy.control.CompilerConfiguration;
import org.codehaus.groovy.control.MultipleCompilationErrorsException;
import org.codehaus.groovy.control.SourceUnit;
import org.codehaus.groovy.control.customizers.CompilationCustomizer;
import org.codehaus.groovy.control.customizers.ImportCustomizer;

    }
    tf_executor.fetch
  }
  func.return
}

// The following tests check that certain control dependencies between islands
// and certain tf_executor ops are added correctly.

// CHECK: %[[CONTROL:[^ ,]*]] = tf_executor.island wraps "tf.Print"
// CHECK: tf_executor.NextIteration.Sink[{{.*}}] {{.*}}, %[[CONTROL]]
func.func @next_iteration_sink_control_input() {
  tf_executor.graph {

           "reserved for the legacy graph export pipeline to maintain expected "
           "invariants. In the case of this pass, that means manually propagating "
           "controls to lifted parallel execute regions to the graph fetch to "
           "ensure the ops execute, as well as determining whether or not the "
           "islands created by this pass should be split after the replicated "

		switch next {
		case b.Succs[0].Block():
			// if false, jump to b.Succs[1]
			getValue32(s, b.Controls[0])
			s.Prog(wasm.AI32Eqz)
			s.Prog(wasm.AIf)
			s.Br(obj.AJMP, b.Succs[1].Block())
			s.Prog(wasm.AEnd)
		case b.Succs[1].Block():
			// if true, jump to b.Succs[0]
			getValue32(s, b.Controls[0])
			s.Prog(wasm.AIf)
			s.Br(obj.AJMP, b.Succs[0].Block())
			s.Prog(wasm.AEnd)
		default:

//   order and cannot be executed in parallel.
// - A control dependency (A,B) means that op A has to be executed before op B.
//   A is a control predecessor of B, and B is a control successor of A.
// - The control dependencies provided by side effect analysis are guaranteed to
//   be sufficient for correct execution but they are not guaranteed to be
//   minimal (that means, some control dependencies might not be required for
//   correct execution).

	// older than 30 days.
	RotationMaxAge int

	// RotationMaxBackups is the maximum number of old log files to retain.  The default
	// is to retain at most 1000 logs.
	RotationMaxBackups int

	// JSONEncoding controls whether the log is formatted as JSON.
	JSONEncoding bool

	// logGRPC indicates that Grpc logs should be captured.
	// This is enabled by a --log_output_level=grpc:<level> typically
	logGRPC bool

LogicalResult IslandOp::fold(FoldAdaptor,
                             llvm::SmallVectorImpl<OpFoldResult> &results) {
  // This folds IslandOps with no inner ops, one control operand and no data
  // results. The single control operand is forwarded to the IslandOp control
  // result users.
  if (getNumOperands() != 1 || getNumResults() != 1 ||
      !HasSingleOpInBlock<YieldOp>(&GetBody()))
    return failure();

               tf_executor.yield
             }
             tf_executor.fetch %island : !tf_executor.control
          }
          "tf.Yield"() : () -> ()
        }) {is_stateless = false} : (tensor<i1>) -> ()
      tf_executor.yield
    }
    tf_executor.fetch %island : !tf_executor.control
  }
  func.return
}

// Test propagation through WhileRegion (inlined calls)

		URL. See https://golang.org/ref/mod#authenticating.
	GOTOOLCHAIN
		Controls which Go toolchain is used. See https://go.dev/doc/toolchain.
	GOTMPDIR
		The directory where the go command will write
		temporary source files, packages, and binaries.
	GOVCS
		Lists version control commands that may be used with matching servers.
		See 'go help vcs'.
	GOWORK