START_OF_INPUT    725 src/ast.cc       return type() == RegExpAssertion::START_OF_INPUT;
START_OF_INPUT    863 src/ast.cc         case RegExpAssertion::START_OF_INPUT:
START_OF_INPUT   4896 src/jsregexp.cc     case START_OF_INPUT:
START_OF_INPUT   5252 src/parser.cc              new(zone()) RegExpAssertion(RegExpAssertion::START_OF_INPUT));