8316581: Improve performance of Symbol::print_value_on()

Backport-of: 90bcdbd

src/hotspot/share/oops/symbol.cpp

@@ -22,7 +22,6 @@
  *
  */
 
-
 #include "precompiled.hpp"
 #include "cds/metaspaceShared.hpp"
 #include "classfile/altHashing.hpp"
@@ -388,11 +387,9 @@ void Symbol::print() const { print_on(tty); }
 // The print_value functions are present in all builds, to support the
 // disassembler and error reporting.
 void Symbol::print_value_on(outputStream* st) const {
- st->print("'");
- for (int i = 0; i < utf8_length(); i++) {
- st->print("%c", char_at(i));
- }
- st->print("'");
+ st->print_raw("'", 1);
+ st->print_raw((const char*)base(), utf8_length());
+ st->print_raw("'", 1);
 }
 
 void Symbol::print_value() const { print_value_on(tty); }