Revert of [debugger] flood function for stepping before calling it.

src/x64/macro-assembler-x64.h

 // 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.
 
 #ifndef V8_X64_MACRO_ASSEMBLER_X64_H_
 #define V8_X64_MACRO_ASSEMBLER_X64_H_
 
 #include "src/assembler.h"
 #include "src/bailout-reason.h"
 #include "src/base/flags.h"
@@ skipping 353 matching lines @@
     ExternalReference roots_array_start =
         ExternalReference::roots_array_start(isolate());
     Move(kRootRegister, roots_array_start);
     addp(kRootRegister, Immediate(kRootRegisterBias));
   }
 
   // ---------------------------------------------------------------------------
   // JavaScript invokes
 
   // Invoke the JavaScript function code by either calling or jumping.
-  void InvokeFunctionCode(Register function, Register new_target,
-                          const ParameterCount& expected,
-                          const ParameterCount& actual, InvokeFlag flag,
-                          const CallWrapper& call_wrapper);
+  void InvokeCode(Register code,
+                  Register new_target,
+                  const ParameterCount& expected,
+                  const ParameterCount& actual,
+                  InvokeFlag flag,
+                  const CallWrapper& call_wrapper);
 
   // Invoke the JavaScript function in the given register. Changes the
   // current context to the context in the function before invoking.
   void InvokeFunction(Register function,
                       Register new_target,
                       const ParameterCount& actual,
                       InvokeFlag flag,
                       const CallWrapper& call_wrapper);
 
   void InvokeFunction(Register function,
                       Register new_target,
                       const ParameterCount& expected,
                       const ParameterCount& actual,
                       InvokeFlag flag,
                       const CallWrapper& call_wrapper);
 
   void InvokeFunction(Handle<JSFunction> function,
                       const ParameterCount& expected,
                       const ParameterCount& actual,
                       InvokeFlag flag,
                       const CallWrapper& call_wrapper);
 
   // Invoke specified builtin JavaScript function.
   void InvokeBuiltin(int native_context_index, InvokeFlag flag,
                      const CallWrapper& call_wrapper = NullCallWrapper());
 
   // Store the function for the given builtin in the target register.
   void GetBuiltinFunction(Register target, int native_context_index);
 
+  // Store the code object for the given builtin in the target register.
+  void GetBuiltinEntry(Register target, int native_context_index);
+
+
   // ---------------------------------------------------------------------------
   // Smi tagging, untagging and operations on tagged smis.
 
   // Support for constant splitting.
   bool IsUnsafeInt(const int32_t x);
   void SafeMove(Register dst, Smi* src);
   void SafePush(Smi* src);
 
   // Conversions between tagged smi values and non-tagged integer values.
 
@@ skipping 1164 matching lines @@
 
   // Helper functions for generating invokes.
   void InvokePrologue(const ParameterCount& expected,
                       const ParameterCount& actual,
                       Label* done,
                       bool* definitely_mismatches,
                       InvokeFlag flag,
                       Label::Distance near_jump,
                       const CallWrapper& call_wrapper);
 
-  void FloodFunctionIfStepping(Register fun, Register new_target,
-                               const ParameterCount& expected,
-                               const ParameterCount& actual);
-
   void EnterExitFramePrologue(bool save_rax);
 
   // Allocates arg_stack_space * kPointerSize memory (not GCed) on the stack
   // accessible via StackSpaceOperand.
   void EnterExitFrameEpilogue(int arg_stack_space, bool save_doubles);
 
   void LeaveExitFrameEpilogue(bool restore_context);
 
   // Allocation support helpers.
   // Loads the top of new-space into the result register.
@@ skipping 127 matching lines @@
   }                                                                          \
   masm->
 #else
 #define ACCESS_MASM(masm) masm->
 #endif
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_X64_MACRO_ASSEMBLER_X64_H_