Fix some stub calling asserts on x64.

src/mips/code-stubs-mips.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 3462 matching lines @@
   __ bind(&call_runtime);
   __ TailCallRuntime(Runtime::kMath_pow_cfunction, 2, 1);
 }
 
 
 bool CEntryStub::NeedsImmovableCode() {
   return true;
 }
 
 
+bool CEntryStub::CompilingCallsToThisStubIsGCSafe() {
+  return !save_doubles_ && result_size_ == 1;
+}
+
+
+void CodeStub::GenerateStubsAheadOfTime() {
+}
+
+
 void CEntryStub::GenerateThrowTOS(MacroAssembler* masm) {
   __ Throw(v0);
 }
 
 
 void CEntryStub::GenerateThrowUncatchable(MacroAssembler* masm,
                                           UncatchableExceptionType type) {
   __ ThrowUncatchable(type, v0);
 }
 
@@ skipping 3482 matching lines @@
   __ mov(result, zero_reg);
   __ Ret();
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_MIPS