Remove HCallGlobal and merge uses with HCallNamed.

src/x64/lithium-x64.h

Index: src/x64/lithium-x64.h
diff --git a/src/x64/lithium-x64.h b/src/x64/lithium-x64.h
index b04d607624462152b35d861478d0b4561297015a..eea11f48d1a0c54ee6b034b9216221d588100d6f 100644
--- a/src/x64/lithium-x64.h
+++ b/src/x64/lithium-x64.h
@@ -54,7 +54,6 @@ class LCodeGen;
   V(Branch)                                     \
   V(CallConstantFunction)                       \
   V(CallFunction)                               \
-  V(CallGlobal)                                 \
   V(CallKeyed)                                  \
   V(CallKnownGlobal)                            \
   V(CallNamed)                                  \
@@ -1866,24 +1865,6 @@ class LCallFunction V8_FINAL : public LTemplateInstruction<1, 2, 0> {
 };
 
 
-class LCallGlobal V8_FINAL : public LTemplateInstruction<1, 1, 0> {
- public:
-  explicit LCallGlobal(LOperand* context) {
-    inputs_[0] = context;
-  }
-
-  LOperand* context() { return inputs_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(CallGlobal, "call-global")
-  DECLARE_HYDROGEN_ACCESSOR(CallGlobal)
-
-  virtual void PrintDataTo(StringStream* stream) V8_OVERRIDE;
-
-  Handle<String> name() const {return hydrogen()->name(); }
-  int arity() const { return hydrogen()->argument_count() - 1; }
-};
-
-
 class LCallKnownGlobal V8_FINAL : public LTemplateInstruction<1, 0, 0> {
  public:
   DECLARE_CONCRETE_INSTRUCTION(CallKnownGlobal, "call-known-global")