Enable preaging of code objects when --optimize-for-size.

src/x64/macro-assembler-x64.cc

 // 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 2646 matching lines @@
 #endif
 }
 
 
 void MacroAssembler::Call(Handle<Code> code_object,
                           RelocInfo::Mode rmode,
                           TypeFeedbackId ast_id) {
 #ifdef DEBUG
   int end_position = pc_offset() + CallSize(code_object);
 #endif
-  ASSERT(RelocInfo::IsCodeTarget(rmode));
+  ASSERT(RelocInfo::IsCodeTarget(rmode) ||
+      rmode == RelocInfo::CODE_AGE_SEQUENCE);
   call(code_object, rmode, ast_id);
 #ifdef DEBUG
   CHECK_EQ(end_position, pc_offset());
 #endif
 }
 
 
 void MacroAssembler::Pushad() {
   push(rax);
   push(rcx);
@@ skipping 2291 matching lines @@
   movq(arg_reg_1, isolate, RelocInfo::EXTERNAL_REFERENCE);
   CallCFunction(
       ExternalReference::record_object_allocation_function(isolate), 3);
   PopSafepointRegisters();
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64