Faster invocation of custom comparator function.

src/arm/virtual-frame-arm.cc

Index: src/arm/virtual-frame-arm.cc
diff --git a/src/arm/virtual-frame-arm.cc b/src/arm/virtual-frame-arm.cc
index 1e3a865658b427d6887f8334307ea59673c4afd2..ac8bb2821a24e681ea5a604e425e3084f587e2c2 100644
--- a/src/arm/virtual-frame-arm.cc
+++ b/src/arm/virtual-frame-arm.cc
@@ -191,6 +191,20 @@ void VirtualFrame::PushTryHandler(HandlerType type) {
 }
 
 
+void VirtualFrame::CallJSFunction(int arg_count) {
+  // InvokeFunction requires function in r1.
+  EmitPop(r1);
+
+  // +1 for receiver.
+  Forget(arg_count + 1);
+  ASSERT(cgen()->HasValidEntryRegisters());
+  ParameterCount count(arg_count);
+  __ InvokeFunction(r1, count, CALL_FUNCTION);
+  // Restore the context.
+  __ ldr(cp, Context());
+}
+
+
 void VirtualFrame::CallRuntime(Runtime::Function* f, int arg_count) {
   Forget(arg_count);
   ASSERT(cgen()->HasValidEntryRegisters());