Revert of [runtime] Introduce dedicated JSBoundFunction to represent bound functions.

src/x64/macro-assembler-x64.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.
 
 #if V8_TARGET_ARCH_X64
 
 #include "src/base/bits.h"
 #include "src/base/division-by-constant.h"
 #include "src/bootstrapper.h"
 #include "src/codegen.h"
@@ skipping 3843 matching lines @@
   if (emit_debug_code()) {
     testb(object, Immediate(kSmiTagMask));
     Check(not_equal, kOperandIsASmiAndNotAFunction);
     Push(object);
     CmpObjectType(object, JS_FUNCTION_TYPE, object);
     Pop(object);
     Check(equal, kOperandIsNotAFunction);
   }
 }
 
-
-void MacroAssembler::AssertBoundFunction(Register object) {
-  if (emit_debug_code()) {
-    testb(object, Immediate(kSmiTagMask));
-    Check(not_equal, kOperandIsASmiAndNotABoundFunction);
-    Push(object);
-    CmpObjectType(object, JS_BOUND_FUNCTION_TYPE, object);
-    Pop(object);
-    Check(equal, kOperandIsNotABoundFunction);
-  }
-}
-
 
 void MacroAssembler::AssertUndefinedOrAllocationSite(Register object) {
   if (emit_debug_code()) {
     Label done_checking;
     AssertNotSmi(object);
     Cmp(object, isolate()->factory()->undefined_value());
     j(equal, &done_checking);
     Cmp(FieldOperand(object, 0), isolate()->factory()->allocation_site_map());
     Assert(equal, kExpectedUndefinedOrCell);
     bind(&done_checking);
@@ skipping 1583 matching lines @@
   movl(rax, dividend);
   shrl(rax, Immediate(31));
   addl(rdx, rax);
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X64