Avoid GC when compiling CallIC stubs....

src/heap.h

Index: src/heap.h
===================================================================
--- src/heap.h	(revision 5173)
+++ src/heap.h	(working copy)
@@ -877,6 +877,8 @@
 #ifdef DEBUG
   static bool IsAllocationAllowed() { return allocation_allowed_; }
   static inline bool allow_allocation(bool enable);
+  static bool IsGCAllowed() { return gc_allowed_; }
+  static inline bool allow_gc(bool enable);
 
   static bool disallow_allocation_failure() {
     return disallow_allocation_failure_;
@@ -1078,6 +1080,7 @@
 
 #ifdef DEBUG
   static bool allocation_allowed_;
+  static bool gc_allowed_;
 
   // If the --gc-interval flag is set to a positive value, this
   // variable holds the value indicating the number of allocations
@@ -1680,6 +1683,20 @@
   bool old_state_;
 };
 
+class AssertNoGC {
+ public:
+  AssertNoGC() {
+    old_state_ = Heap::allow_gc(false);
+  }
+
+  ~AssertNoGC() {
+    Heap::allow_gc(old_state_);
+  }
+
+ private:
+  bool old_state_;
+};
+
 class DisableAssertNoAllocation {
  public:
   DisableAssertNoAllocation() {
@@ -1702,6 +1719,12 @@
   ~AssertNoAllocation() { }
 };
 
+class AssertNoGC {
+ public:
+  AssertNoGC() { }
+  ~AssertNoGC() { }
+};
+
 class DisableAssertNoAllocation {
  public:
   DisableAssertNoAllocation() { }