Support %_CallFunction in optimized code.

src/ia32/lithium-ia32.h

Index: src/ia32/lithium-ia32.h
diff --git a/src/ia32/lithium-ia32.h b/src/ia32/lithium-ia32.h
index 9ace8f869b68c20cf59ccbd8d7880fad85584d91..92f32bf420d766e7deff796a8ce20ecceba62e9f 100644
--- a/src/ia32/lithium-ia32.h
+++ b/src/ia32/lithium-ia32.h
@@ -106,6 +106,7 @@ class LCodeGen;
   V(InstanceOfAndBranch)                        \
   V(InstanceOfKnownGlobal)                      \
   V(Integer32ToDouble)                          \
+  V(InvokeFunction)                             \
   V(IsNull)                                     \
   V(IsNullAndBranch)                            \
   V(IsObject)                                   \
@@ -1450,6 +1451,25 @@ class LCallConstantFunction: public LTemplateInstruction<1, 0, 0> {
 };
 
 
+class LInvokeFunction: public LTemplateInstruction<1, 2, 0> {
+ public:
+  LInvokeFunction(LOperand* context, LOperand* function) {
+    inputs_[0] = context;
+    inputs_[1] = function;
+  }
+
+  DECLARE_CONCRETE_INSTRUCTION(InvokeFunction, "invoke-function")
+  DECLARE_HYDROGEN_ACCESSOR(InvokeFunction)
+
+  LOperand* context() { return inputs_[0]; }
+  LOperand* function() { return inputs_[1]; }
+
+  virtual void PrintDataTo(StringStream* stream);
+
+  int arity() const { return hydrogen()->argument_count() - 1; }
+};
+
+
 class LCallKeyed: public LTemplateInstruction<1, 2, 0> {
  public:
   LCallKeyed(LOperand* context, LOperand* key) {