Remove invalid asserts from last commit.

src/x64/stub-cache-x64.cc

 // Copyright 2010 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 273 matching lines @@
 
   // Make sure the flags do not name a specific type.
   ASSERT(Code::ExtractTypeFromFlags(flags) == 0);
 
   // Make sure that there are no register conflicts.
   ASSERT(!scratch.is(receiver));
   ASSERT(!scratch.is(name));
 
   // Check scratch register is valid, extra and extra2 are unused.
   ASSERT(!scratch.is(no_reg));
-  ASSERT(extra.is(no_reg));
   ASSERT(extra2.is(no_reg));
 
   // Check that the receiver isn't a smi.
   __ JumpIfSmi(receiver, &miss);
 
   // Get the map of the receiver and compute the hash.
   __ movl(scratch, FieldOperand(name, String::kHashFieldOffset));
   // Use only the low 32 bits of the map pointer.
   __ addl(scratch, FieldOperand(receiver, HeapObject::kMapOffset));
   __ xor_(scratch, Immediate(flags));
@@ skipping 2661 matching lines @@
   // Return the generated code.
   return GetCode();
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64