Notify CPU profiler when calling native getters

src/x64/macro-assembler-x64.cc

Index: src/x64/macro-assembler-x64.cc
diff --git a/src/x64/macro-assembler-x64.cc b/src/x64/macro-assembler-x64.cc
index a2568a400f41fa8960c61c8cda0998e03fa854f2..b6a1d34d6a5cbfc8af1a0e2dcfe1e0015860891e 100644
--- a/src/x64/macro-assembler-x64.cc
+++ b/src/x64/macro-assembler-x64.cc
@@ -697,6 +697,8 @@ void MacroAssembler::PrepareCallApiFunction(int arg_stack_space,
 
 
 void MacroAssembler::CallApiFunctionAndReturn(Address function_address,
+                                              Address thunk_address,
+                                              Register thunk_last_arg,
                                               int stack_space,
                                               bool returns_handle,
                                               int return_value_offset) {
@@ -737,9 +739,29 @@ void MacroAssembler::CallApiFunctionAndReturn(Address function_address,
     PopSafepointRegisters();
   }
 
+
+  Label profiler_disabled;
+  Label end_profiler_check;
+  bool* is_profiling_flag =
+      isolate()->cpu_profiler()->is_profiling_address();
+  STATIC_ASSERT(sizeof(*is_profiling_flag) == 1);
+  movq(rax, is_profiling_flag, RelocInfo::EXTERNAL_REFERENCE);
+  cmpb(Operand(rax, 0), Immediate(0));
+  j(zero, &profiler_disabled);
+
+  // Third parameter is the address of the actual getter function.
+  movq(thunk_last_arg, function_address, RelocInfo::EXTERNAL_REFERENCE);
+  movq(rax, thunk_address, RelocInfo::EXTERNAL_REFERENCE);
+  jmp(&end_profiler_check);
+
+  bind(&profiler_disabled);
   // Call the api function!
   movq(rax, reinterpret_cast<int64_t>(function_address),
        RelocInfo::EXTERNAL_REFERENCE);
+
+  bind(&end_profiler_check);
+
+  // Call the api function!
   call(rax);
 
   if (FLAG_log_timer_events) {