Add optimized compiler support for generic global loads....

src/x64/lithium-x64.h

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 100 matching lines @@
   V(IsObjectAndBranch)                          \
   V(IsSmi)                                      \
   V(IsSmiAndBranch)                             \
   V(JSArrayLength)                              \
   V(Label)                                      \
   V(LazyBailout)                                \
   V(LoadContextSlot)                            \
   V(LoadElements)                               \
   V(LoadExternalArrayPointer)                   \
   V(LoadGlobal)                                 \
+  V(LoadGlobalGeneric)                          \
   V(LoadKeyedFastElement)                       \
   V(LoadKeyedGeneric)                           \
   V(LoadNamedField)                             \
   V(LoadNamedGeneric)                           \
   V(LoadFunctionPrototype)                      \
   V(LoadPixelArrayElement)                      \
   V(ModI)                                       \
   V(MulI)                                       \
   V(NumberTagD)                                 \
   V(NumberTagI)                                 \
@@ skipping 1093 matching lines @@
 };
 
 
 class LLoadGlobal: public LTemplateInstruction<1, 0, 0> {
  public:
   DECLARE_CONCRETE_INSTRUCTION(LoadGlobal, "load-global")
   DECLARE_HYDROGEN_ACCESSOR(LoadGlobal)
 };
 
 
+class LLoadGlobalGeneric: public LTemplateInstruction<1, 0, 0> {
+ public:
+  DECLARE_CONCRETE_INSTRUCTION(LoadGlobalGeneric, "load-global-generic")
+  DECLARE_HYDROGEN_ACCESSOR(LoadGlobalGeneric)
+};
+
+
 class LStoreGlobal: public LTemplateInstruction<0, 1, 1> {
  public:
   explicit LStoreGlobal(LOperand* value, LOperand* temp) {
     inputs_[0] = value;
     temps_[0] = temp;
   }
 
   DECLARE_CONCRETE_INSTRUCTION(StoreGlobal, "store-global")
   DECLARE_HYDROGEN_ACCESSOR(StoreGlobal)
 };
@@ skipping 819 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(LChunkBuilder);
 };
 
 #undef DECLARE_HYDROGEN_ACCESSOR
 #undef DECLARE_INSTRUCTION
 #undef DECLARE_CONCRETE_INSTRUCTION
 
 } }  // namespace v8::int
 
 #endif  // V8_X64_LITHIUM_X64_H_