Support %_CallFunction in optimized code.

src/hydrogen.cc

Index: src/hydrogen.cc
diff --git a/src/hydrogen.cc b/src/hydrogen.cc
index 9007d0903b5b7d92f262ac3c6e70c22000247745..d6c1ec6d28871e1a75165d270bdc4ca3f4cdbeac 100644
--- a/src/hydrogen.cc
+++ b/src/hydrogen.cc
@@ -5530,7 +5530,21 @@ void HGraphBuilder::GenerateSwapElements(CallRuntime* call) {
 
 // Fast call for custom callbacks.
 void HGraphBuilder::GenerateCallFunction(CallRuntime* call) {
-  return Bailout("inlined runtime function: CallFunction");
+  // 1 ~ The function to call is not itself an argument to the call.
+  int arg_count = call->arguments()->length() - 1;
+  ASSERT(arg_count >= 1);  // There's always at least a receiver.

[fschneider, 2011/04/13 16:59:30]

Can this also be >= 2 (receiver + function)?

+
+  for (int i = 0; i < arg_count; ++i) {
+    CHECK_ALIVE(VisitArgument(call->arguments()->at(i)));
+  }
+  CHECK_ALIVE(VisitForValue(call->arguments()->last()));
+  HValue* function = Pop();
+  HContext* context = new HContext;
+  AddInstruction(context);
+  HInvokeFunction* result =
+      new(zone()) HInvokeFunction(context, function, arg_count);
+  Drop(arg_count);
+  ast_context()->ReturnInstruction(result, call->id());
 }