Add one-char string table for faster String.charAt to the VM.

runtime/vm/snapshot_test.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 "include/dart_debugger_api.h"
 #include "platform/assert.h"
 #include "vm/bigint_operations.h"
 #include "vm/class_finalizer.h"
 #include "vm/dart_api_impl.h"
 #include "vm/dart_api_message.h"
@@ skipping 1822 matching lines @@
     {
       // Generate a list of objects of different types from Dart code.
       ApiNativeScope scope;
       Dart_CObject* root = GetDeserializedDartMessage(lib, "getMixedList");
       EXPECT_NOTNULL(root);
       EXPECT_EQ(Dart_CObject::kArray, root->type);
       EXPECT_EQ(kArrayLength, root->value.as_array.length);
       for (int i = 0; i < kArrayLength; i++) {
         Dart_CObject* element = root->value.as_array.values[i];
         if ((i % 2) == 0) {
-          EXPECT_EQ(root->value.as_array.values[0], element);
           EXPECT_EQ(Dart_CObject::kString, element->type);
           EXPECT_STREQ("A", element->value.as_string);
         } else {
-          EXPECT_EQ(root->value.as_array.values[1], element);
           EXPECT_EQ(Dart_CObject::kDouble, element->type);
           EXPECT_STREQ(2.72, element->value.as_double);
         }
       }
     }
     {
       // Generate a list of objects of different types from Dart code.
       ApiNativeScope scope;
       Dart_CObject* root = GetDeserializedDartMessage(lib, "getSelfRefList");
       EXPECT_NOTNULL(root);
@@ skipping 150 matching lines @@
     {
       // Generate a list of objects of different types from Dart code.
       ApiNativeScope scope;
       Dart_CObject* root = GetDeserializedDartMessage(lib, "getMixedList");
       EXPECT_NOTNULL(root);
       EXPECT_EQ(Dart_CObject::kArray, root->type);
       EXPECT_EQ(kArrayLength, root->value.as_array.length);
       for (int i = 0; i < kArrayLength; i++) {
         Dart_CObject* element = root->value.as_array.values[i];
         if ((i % 2) == 0) {
-          EXPECT_EQ(root->value.as_array.values[0], element);
           EXPECT_EQ(Dart_CObject::kString, element->type);
           EXPECT_STREQ("A", element->value.as_string);
         } else {
-          EXPECT_EQ(root->value.as_array.values[1], element);
           EXPECT_EQ(Dart_CObject::kDouble, element->type);
           EXPECT_STREQ(2.72, element->value.as_double);
         }
       }
     }
     {
       // Generate a list of objects of different types from Dart code.
       ApiNativeScope scope;
       Dart_CObject* root = GetDeserializedDartMessage(lib, "getSelfRefList");
       EXPECT_NOTNULL(root);
@@ skipping 111 matching lines @@
   EXPECT(Dart_ErrorHasException(result));
   EXPECT_SUBSTRING("Exception: nulltruefalse123456æøå3.14[]100123456789\n",
                    Dart_GetError(result));
 
   Dart_ExitScope();
 }
 
 #endif  // defined(TARGET_ARCH_IA32) || defined(TARGET_ARCH_X64).
 
 }  // namespace dart