Ignore debug stepin in optimized code for array builtins.

src/runtime.h

 // Copyright 2012 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 79 matching lines @@
   F(OptimizeFunctionOnNextCall, -1, 1) \
   F(NeverOptimizeFunction, 1, 1) \
   F(GetOptimizationStatus, -1, 1) \
   F(GetOptimizationCount, 1, 1) \
   F(UnblockConcurrentRecompilation, 0, 1) \
   F(CompileForOnStackReplacement, 1, 1) \
   F(SetAllocationTimeout, -1 /* 2 || 3 */, 1) \
   F(SetNativeFlag, 1, 1) \
   F(SetInlineBuiltinFlag, 1, 1) \
   F(StoreArrayLiteralElement, 5, 1) \
-  F(DebugCallbackSupportsStepping, 1, 1) \
   F(DebugPrepareStepInIfStepping, 1, 1) \
   F(DebugPendingExceptionInPromise, 2, 1) \
   F(FlattenString, 1, 1) \
   F(LoadMutableDouble, 2, 1) \
   F(TryMigrateInstance, 1, 1) \
   F(NotifyContextDisposed, 0, 1) \
   \
   /* Array join support */ \
   F(PushIfAbsent, 2, 1) \
   F(ArrayConcat, 1, 1) \
@@ skipping 589 matching lines @@
   F(ArrayBufferViewGetByteLength, 1, 1)                                      \
   F(ArrayBufferViewGetByteOffset, 1, 1)                                      \
   F(TypedArrayGetLength, 1, 1)                                               \
   /* ArrayBuffer */                                                          \
   F(ArrayBufferGetByteLength, 1, 1)                                          \
   /* Maths */                                                                \
   F(ConstructDouble, 2, 1)                                                   \
   F(DoubleHi, 1, 1)                                                          \
   F(DoubleLo, 1, 1)                                                          \
   F(MathSqrt, 1, 1)                                                          \
-  F(MathLog, 1, 1)
+  F(MathLog, 1, 1)                                                           \
+  /* Debugger */                                                             \
+  F(DebugCallbackSupportsStepping, 1, 1)
 
 
 //---------------------------------------------------------------------------
 // Runtime provides access to all C++ runtime functions.
 
 class RuntimeState {
  public:
   StaticResource<ConsStringIteratorOp>* string_iterator() {
     return &string_iterator_;
   }
@@ skipping 189 matching lines @@
 class AllocateDoubleAlignFlag:  public BitField<bool,            0, 1> {};
 class AllocateTargetSpace:      public BitField<AllocationSpace, 1, 3> {};
 
 class DeclareGlobalsEvalFlag:   public BitField<bool,       0, 1> {};
 class DeclareGlobalsNativeFlag: public BitField<bool,       1, 1> {};
 class DeclareGlobalsStrictMode: public BitField<StrictMode, 2, 1> {};
 
 } }  // namespace v8::internal
 
 #endif  // V8_RUNTIME_H_