Use platform specific stubs for vector-based Load/KeyedLoad.

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index 8ddcd8b04fc7a8d0cf4171f598cf2ba50ecfc65f..9fac70dc1bb0d1088d503aed879ebb81e5d96139 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -8782,7 +8782,7 @@ class Name: public HeapObject {
 // ES6 symbols.
 class Symbol: public Name {
  public:
-  // [name]: the print name of a symbol, or undefined if none.
+  // [name]: the print name of a symbol, or undefined if none
   DECL_ACCESSORS(name, Object)
 
   DECL_ACCESSORS(flags, Smi)