Introduce per-isolate cache for compile time constants

runtime/vm/object.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/object.h"
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "vm/assembler.h"
 #include "vm/cpu.h"
@@ skipping 18112 matching lines @@
 static intptr_t HashImpl(const T* characters, intptr_t len) {
   ASSERT(len >= 0);
   StringHasher hasher;
   for (intptr_t i = 0; i < len; i++) {
     hasher.Add(characters[i]);
   }
   return hasher.Finalize(String::kHashBits);
 }
 
 
+intptr_t String::Hash(const char* characters, intptr_t len) {
+  return HashImpl(characters, len);
+}
+
+
 intptr_t String::Hash(const uint8_t* characters, intptr_t len) {
   return HashImpl(characters, len);
 }
 
 
 intptr_t String::Hash(const uint16_t* characters, intptr_t len) {
   StringHasher hasher;
   intptr_t i = 0;
   while (i < len) {
     hasher.Add(Utf16::Next(characters, &i, len));
@@ skipping 3272 matching lines @@
   return tag_label.ToCString();
 }
 
 
 void UserTag::PrintJSONImpl(JSONStream* stream, bool ref) const {
   Instance::PrintJSONImpl(stream, ref);
 }
 
 
 }  // namespace dart