Pregenerate a RecordWrite stub that we need in the new CallFunctionStub

src/x64/code-stubs-x64.cc

Index: src/x64/code-stubs-x64.cc
===================================================================
--- src/x64/code-stubs-x64.cc	(revision 9457)
+++ src/x64/code-stubs-x64.cc	(working copy)
@@ -3376,7 +3376,7 @@
 
 void CodeStub::GenerateStubsAheadOfTime() {
   CEntryStub save_doubles(1, kSaveFPRegs);
-  save_doubles.GetCode();
+  save_doubles.GetCode()->set_is_pregenerated(true);
   StoreBufferOverflowStub::GenerateFixedRegStubsAheadOfTime();
   // It is important that the store buffer overflow stubs are generated first.
   RecordWriteStub::GenerateFixedRegStubsAheadOfTime();
@@ -5616,9 +5616,9 @@
 
 void StoreBufferOverflowStub::GenerateFixedRegStubsAheadOfTime() {
   StoreBufferOverflowStub stub1(kDontSaveFPRegs);
-  stub1.GetCode();
+  stub1.GetCode()->set_is_pregenerated(true);
   StoreBufferOverflowStub stub2(kSaveFPRegs);
-  stub2.GetCode();
+  stub2.GetCode()->set_is_pregenerated(true);
 }
 
 
@@ -5631,7 +5631,7 @@
                          entry->address,
                          entry->action,
                          kDontSaveFPRegs);
-    stub.GetCode();
+    stub.GetCode()->set_is_pregenerated(true);
   }
 }