// If adding others, include the polynomial and a name
	// to identify it.

	genCrc32ConstTable(w, 0xedb88320, "IEEE")
	genCrc32ConstTable(w, 0x82f63b78, "Cast")
	genCrc32ConstTable(w, 0xeb31d82e, "Koop")
	b := w.Bytes()

	err := os.WriteFile("crc32_table_ppc64le.s", b, 0666)
	if err != nil {
		fmt.Fprintf(os.Stderr, "can't write output: %s\n", err)
	}
}

// cancelled. The returned error is the error returned by the last condition or the
// context error if the context was terminated.
//
// This is the common loop construct for all polling in the wait package.
func loopConditionUntilContext(ctx context.Context, t Timer, immediate, sliding bool, condition ConditionWithContextFunc) error {
	defer t.Stop()

	var timeCh <-chan time.Time

      }
    }
  });
}

// tf.NoOp islands are used to combine multiple control dependencies into one.
// These islands have a single tf.NoOp inside them and consume multiple control
// outputs to generate a single control output.
//
// For example,
// ```
// %merged_control = "tf_executor.island"(%control_a, %control_b) ({
//   "tf.NoOp"() : () -> ()
//   "tf_executor.yield"() : () -> ()

    // CHECK: %[[LOCAL_BARRIER:.*]] = tf_executor.island(%[[CONTROL_ASSIGN_VAR_RES_0_0]], %[[CONTROL_ASSIGN_VAR_RES_1_0]], %[[CONTROL_ADA_GRAD]]) wraps "tf.NoOp"() : () -> ()
    %local_barrier = tf_executor.island(%assign_control_0, %assign_control_1, %apply_grad_control) wraps "tf.NoOp"() : () -> ()

  }];
  let constructor = "TF::CreateRemoveUnusedWhileResultsPass()";
}

def HoistLoopInvariantPass : Pass<"tf-hoist-loop-invariant", "mlir::func::FuncOp"> {
  let summary = "Hoists loop invariant ops to the outside of the loop";
   let description = [{
      Hoists loop invariant to the outside of the loop. The pass is similar to
      LoopInvariantCodeMotion pass, but it also hoists ReadVariableOps,
      if the variable is read only.

operations in the while loop body are dependent on which inputs, it captures
inter iteration parallelism in while loop. Control dependencies on the other
hand create a barrier at the end of while loop body thus blocking any
parallelism across iterations.

For example, the following while loop body has a `%barrier` at the end.
Although there is no data/control dependency between `tf.AssignVariableOp`

package ssa

import (
	"fmt"
)

type loop struct {
	header *Block // The header node of this (reducible) loop
	outer  *loop  // loop containing this loop

	// By default, children, exits, and depth are not initialized.
	children []*loop  // loops nested directly within this loop. Initialized by assembleChildren().
	exits    []*Block // exits records blocks reached by exits from this loop. Initialized by findExits().

package ssa

// loopRotate converts loops with a check-loop-condition-at-beginning
// to loops with a check-loop-condition-at-end.
// This helps loops avoid extra unnecessary jumps.
//
//	 loop:
//	   CMPQ ...
//	   JGE exit
//	   ...
//	   JMP loop
//	 exit:
//
//	  JMP entry
//	loop:
//	  ...
//	entry:
//	  CMPQ ...
//	  JLT loop
func loopRotate(f *Func) {
	loopnest := f.loopnest()

  for (int i = 0; i < n; ++i) result.push_back(ToOutput(output_tensors[i]));
  return result;
}

// The backprop loop counter and main backprop loop run in their own execution
// frame (conceptually, the main forward loop and forward loop counter run
// together in a frame, then the backprop loop counter and backprop loop run
// together in a different frame). This returns the frame name to use for the
// backprop while loops.

        code << [
                "id('noop')",
                "id 'noop'",
                "id('noop').version('bar')",
                "id 'noop' version 'bar'",
                "id('noop').\nversion 'bar'",
                "id('java');id('noop')",
                "id('java')\nid('noop')",
                "id('noop').version('bar');id('java')",
                "id('noop').version('bar')\nid('java')",