Debugger: do not compile IC for accessors when debugging.

src/ic/ic.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/v8.h"
 
 #include "src/accessors.h"
 #include "src/api.h"
 #include "src/arguments.h"
 #include "src/base/bits.h"
@@ skipping 1192 matching lines @@
         }
         if (!holder->HasFastProperties()) break;
         NamedLoadHandlerCompiler compiler(isolate(), map, holder, cache_holder);
         return compiler.CompileLoadCallback(lookup->name(), info);
       }
       if (accessors->IsAccessorPair()) {
         Handle<Object> getter(Handle<AccessorPair>::cast(accessors)->getter(),
                               isolate());
         if (!getter->IsJSFunction()) break;
         if (!holder->HasFastProperties()) break;
+        // When debugging we need to go the slow path to flood the accessor.
+        if (!GetSharedFunctionInfo()->debug_info()->IsUndefined()) break;
         Handle<JSFunction> function = Handle<JSFunction>::cast(getter);
         if (!receiver->IsJSObject() && !function->IsBuiltin() &&
             is_sloppy(function->shared()->language_mode())) {
           // Calling sloppy non-builtins with a value as the receiver
           // requires boxing.
           break;
         }
         CallOptimization call_optimization(function);
         NamedLoadHandlerCompiler compiler(isolate(), map, holder, cache_holder);
         if (call_optimization.is_simple_api_call()) {
@@ skipping 556 matching lines @@
         }
         NamedStoreHandlerCompiler compiler(isolate(), receiver_map(), holder);
         return compiler.CompileStoreCallback(receiver, lookup->name(), info);
       } else if (accessors->IsAccessorPair()) {
         Handle<Object> setter(Handle<AccessorPair>::cast(accessors)->setter(),
                               isolate());
         if (!setter->IsJSFunction()) {
           TRACE_GENERIC_IC(isolate(), "StoreIC", "setter not a function");
           break;
         }
+        // When debugging we need to go the slow path to flood the accessor.
+        if (!GetSharedFunctionInfo()->debug_info()->IsUndefined()) break;
         Handle<JSFunction> function = Handle<JSFunction>::cast(setter);
         CallOptimization call_optimization(function);
         NamedStoreHandlerCompiler compiler(isolate(), receiver_map(), holder);
         if (call_optimization.is_simple_api_call() &&
             call_optimization.IsCompatibleReceiver(receiver, holder)) {
           return compiler.CompileStoreCallback(receiver, lookup->name(),
                                                call_optimization,
                                                lookup->GetAccessorIndex());
         }
         int expected_arguments =
@@ skipping 1302 matching lines @@
 static const Address IC_utilities[] = {
 #define ADDR(name) FUNCTION_ADDR(name),
     IC_UTIL_LIST(ADDR) NULL
 #undef ADDR
 };
 
 
 Address IC::AddressFromUtilityId(IC::UtilityId id) { return IC_utilities[id]; }
 }  // namespace internal
 }  // namespace v8