Ensure that non-optimized code objects are not flushed for inlined functions.

src/mark-compact.h

Index: src/mark-compact.h
diff --git a/src/mark-compact.h b/src/mark-compact.h
index 254f175b6cc0a2a6330048fc8f4af25c334ea962..e0a7d9495633365d4746868cd4b026d8fcfb1878 100644
--- a/src/mark-compact.h
+++ b/src/mark-compact.h
@@ -383,6 +383,10 @@ class SlotsBuffer {
 };
 
 
+// Defined in isolate.h.
+class ThreadLocalTop;
+
+
 // -------------------------------------------------------------------------
 // Mark-Compact collector
 class MarkCompactCollector {
@@ -603,6 +607,14 @@ class MarkCompactCollector {
   friend class CodeMarkingVisitor;
   friend class SharedFunctionInfoMarkingVisitor;
 
+  // Mark non-optimize code for functions inlined into the given optimized
+  // code. This will prevent it from being flushed.
+  void MarkInlinedFunctionsCode(Code* code);
+
+  // Mark code objects that are active on the stack to prevent them
+  // from being flushed.
+  void PrepareThreadForCodeFlushing(Isolate* isolate, ThreadLocalTop* top);
+
   void PrepareForCodeFlushing();
 
   // Marking operations for objects reachable from roots.