Faster invocation of custom comparator function.

src/arm/virtual-frame-arm.cc

 // Copyright 2009 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 173 matching lines @@
 
 
 void VirtualFrame::PushTryHandler(HandlerType type) {
   // Grow the expression stack by handler size less one (the return
   // address in lr is already counted by a call instruction).
   Adjust(kHandlerSize - 1);
   __ PushTryHandler(IN_JAVASCRIPT, 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());
   __ CallRuntime(f, arg_count);
 }
 
 
 void VirtualFrame::CallRuntime(Runtime::FunctionId id, int arg_count) {
   Forget(arg_count);
   ASSERT(cgen()->HasValidEntryRegisters());
@@ skipping 85 matching lines @@
 void VirtualFrame::EmitPushMultiple(int count, int src_regs) {
   ASSERT(stack_pointer_ == element_count() - 1);
   Adjust(count);
   __ stm(db_w, sp, src_regs);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal