%2 = mhlo.constant dense<20> : tensor<i32>
  // CHECK-NEXT: mhlo.while
  %3, %4, %5 = mhlo.while(%iterArg = %1, %iterArg_0 = %0, %iterArg_1 = %1) : tensor<i32>, tensor<i32>, tensor<i32>
   cond {
    %17 = mhlo.compare  LT, %iterArg_1, %2 : (tensor<i32>, tensor<i32>) -> tensor<i1>
    mhlo.return %17 : tensor<i1>
  } do {
    mhlo.return %0, %0, %0 : tensor<i32>, tensor<i32>, tensor<i32>
  }
  return
}

}

// backtrack runs a backtracking search of prog on the input starting at pos.
func (re *Regexp) backtrack(ib []byte, is string, pos int, ncap int, dstCap []int) []int {
	startCond := re.cond
	if startCond == ^syntax.EmptyOp(0) { // impossible
		return nil
	}
	if startCond&syntax.EmptyBeginText != 0 && pos != 0 {
		// Anchored match, past beginning of text.
		return nil
	}

String id=4
	data="GC (idle)"
String id=5
	data="unspecified"
String id=6
	data="forever"
String id=7
	data="network"
String id=8
	data="select"
String id=9
	data="sync.(*Cond).Wait"
String id=10
	data="sync"
String id=11
	data="chan send"
String id=12
	data="chan receive"
String id=13
	data="GC mark assist wait for work"
String id=14
	data="GC background sweeper wait"