}
}

// Gosched yields the processor, allowing other goroutines to run. It does not
// suspend the current goroutine, so execution resumes automatically.
//
//go:nosplit
func Gosched() {
	checkTimeouts()
	mcall(gosched_m)
}

// goschedguarded yields the processor like gosched, but also checks
// for forbidden states and opts out of the yield in those cases.
//
//go:nosplit

// CHECK:            "tf.Yield"(%[[LESS_0]]) : (tensor<i1>) -> ()
// CHECK:          },  {
// CHECK:          ^bb0(%arg0: tensor<i32>, %arg1: tensor<i32>, %arg2: tensor<i32>):
// CHECK:            %[[ADDV2_0:.*]] = "tf.AddV2"(%arg0, %arg1) : (tensor<i32>, tensor<i32>) -> tensor<i32>
// CHECK:            "tf.Yield"(%[[ADDV2_0]], %arg1, %arg2) : (tensor<i32>, tensor<i32>, tensor<i32>) -> ()

after the entire loop has exited (it might retain a copy of the body
function, or pass it to another goroutine) -- each generated loop has
its own #stateK variable that is used to check for permitted call
patterns to the yield function for a loop body.

The state values are:

abi.RF_DONE = 0      // body of loop has exited in a non-panic way
abi.RF_READY = 1     // body of loop has not exited yet, is not running

	ch := make(chan int)
	go func(ch chan int) {
		ch <- 5
		LockOSThread()
	}(ch)

	g1 := getg()

	// Block on a receive. This is likely to get us a thread
	// switch. If we yield to the sender goroutine, it will
	// lock the thread, forcing us to resume on a different
	// thread.
	<-ch

	g2 := getg()
	if g1 != g2 {
		panic("g1 != g2")
	}

  region.push_back(new mlir::Block);
  auto saved_pos = op_builder.saveInsertionPoint();
  op_builder.setInsertionPointToEnd(&region.front());
  mlir::Operation* cloned_op = op_builder.clone(*op);
  // Add the yield operation.
  op_builder.create<mlir::TFL::YieldOp>(op_loc, cloned_op->getResults());
  // Now emit into the function body again.
  op_builder.restoreInsertionPoint(saved_pos);

		// is the respective default type.
		check.updateExprType(x.expr, Default(x.typ), true)
		check.updateExprType(y.expr, Default(y.typ), true)
	}

	// spec: "Comparison operators compare two operands and yield
	//        an untyped boolean value."
	x.typ = Typ[UntypedBool]
	return

Error:
	// We have an offending operand errOp and possibly an error cause.
	if cause == "" {

	// observe itself as idle with nanotime.
	//
	// To deal with all this, we give a half-proc's worth of leniency.
	//
	// We also retry multiple times to deal with the fact that the OS might deschedule us before
	// we yield and go idle. That has a rare enough chance that retries should resolve it.
	// If the issue we expect is happening, it should be persistent.
	minIdleCPUSeconds := dur.Seconds() * (float64(runtime.GOMAXPROCS(-1)) - 0.5)

    %7 = "tf.FakeQuantWithMinMaxVarsPerChannel"(%arg1, %arg2, %arg3) {device = "", narrow_range = false, num_bits = 8 : i64} : (tensor<*xf32>, tensor<*xf32>, tensor<*xf32>) -> tensor<*xf32>
    "tfl.yield"(%7) : (tensor<*xf32>) -> ()
  }) {device = "", narrow_range = false, num_bits = 8 : i64} : (tensor<3x4xf32>, tensor<4xf32>, tensor<4xf32>) -> tensor<3x4xf32>

		// is the respective default type.
		check.updateExprType(x.expr, Default(x.typ), true)
		check.updateExprType(y.expr, Default(y.typ), true)
	}

	// spec: "Comparison operators compare two operands and yield
	//        an untyped boolean value."
	x.typ = Typ[UntypedBool]
	return

Error:
	// We have an offending operand errOp and possibly an error cause.
	if cause == "" {

	VEOR	V0.B16, V2.B16, V0.B16
	VEOR	V4.B16, V6.B16, V4.B16
	VEOR	V4.B16, V0.B16, V0.B16

	VMOV	V0.D[0], R0
	RET

TEXT runtime·procyield(SB),NOSPLIT,$0-0
	MOVWU	cycles+0(FP), R0
again:
	YIELD
	SUBW	$1, R0
	CBNZ	R0, again
	RET

// Save state of caller into g->sched,
// but using fake PC from systemstack_switch.
// Must only be called from functions with no locals ($0)