Put back the asserts in RememberedSetHelper, but correct this time.

src/x64/full-codegen-x64.cc

 // Copyright 2011 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 3018 matching lines @@
                    not_zero,
                    &no_remembered_set,
                    Label::kNear);
   // Possible optimization: do a check that both values are Smis
   // (or them and test against Smi mask.)
 
   // We are swapping two objects in an array and the incremental marker never
   // pauses in the middle of scanning a single object.  Therefore the
   // incremental marker is not disturbed, so we don't need to call the
   // RecordWrite stub that notifies the incremental marker.
-  __ RememberedSetHelper(
-      index_1, temp, kDontSaveFPRegs, MacroAssembler::kFallThroughAtEnd);
-  __ RememberedSetHelper(
-      index_2, temp, kDontSaveFPRegs, MacroAssembler::kFallThroughAtEnd);
+  __ RememberedSetHelper(elements,
+                         index_1,
+                         temp,
+                         kDontSaveFPRegs,
+                         MacroAssembler::kFallThroughAtEnd);
+  __ RememberedSetHelper(elements,
+                         index_2,
+                         temp,
+                         kDontSaveFPRegs,
+                         MacroAssembler::kFallThroughAtEnd);
 
   __ bind(&no_remembered_set);
 
   // We are done. Drop elements from the stack, and return undefined.
   __ addq(rsp, Immediate(3 * kPointerSize));
   __ LoadRoot(rax, Heap::kUndefinedValueRootIndex);
   __ jmp(&done);
 
   __ bind(&slow_case);
   __ CallRuntime(Runtime::kSwapElements, 3);
@@ skipping 1119 matching lines @@
   *context_length = 0;
   return previous_;
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64