start = -1
				}
			}
		}
		if start != -1 {
			sort.Sort(bySourcePos(order[start:]))
		}
	}

	return order
}

// isFlagOp reports if v is an OP with the flag type.
func (v *Value) isFlagOp() bool {
	if v.Type.IsFlags() || v.Type.IsTuple() && v.Type.FieldType(1).IsFlags() {
		return true
	}
	// PPC64 carry generators put their carry in a non-flag-typed register