VM(RegExp): Allow OSR optimization of RegExp :matcher functions.

runtime/lib/internal_patch.dart

 // Copyright (c) 2013, 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.
 
 import 'dart:core' hide Symbol;
+import 'dart:typed_data' show Int32List;
 
 @patch
 List makeListFixedLength(List growableList)
     native "Internal_makeListFixedLength";
 
 @patch
 List makeFixedListUnmodifiable(List fixedLengthList)
     native "Internal_makeFixedListUnmodifiable";
 
 class VMLibraryHooks {
@@ skipping 41 matching lines @@
           i--, j--) {
         dst[j] = src[i];
       }
     } else {
       for (int i = srcStart, j = dstStart; i < srcStart + count; i++, j++) {
         dst[j] = src[i];
       }
     }
   }
 }
+
+// Called by IRRegExpMacroAssembler::GrowStack.
+Int32List _growRegExpStack(Int32List stack) {
+  final newStack = new Int32List(stack.length * 2);
+  for (int i = 0; i < stack.length; i++) {
+    newStack[i] = stack[i];
+  }
+  return newStack;
+}