Inobject slack tracking is done on a per-closure basis instead of per-shared info basis.

test/cctest/test-mementos.cc

Index: test/cctest/test-mementos.cc
diff --git a/test/cctest/test-mementos.cc b/test/cctest/test-mementos.cc
index a377b4a4c6f31c0a8139f3dc9d1ae95ee37de817..5ed755ffd4665f6d128e90b4ce57bb41d2c89df5 100644
--- a/test/cctest/test-mementos.cc
+++ b/test/cctest/test-mementos.cc
@@ -91,8 +91,7 @@ TEST(PretenuringCallNew) {
 
   // We need to create several instances to get past the slack-tracking
   // phase, where mementos aren't emitted.
-  int call_count = 10;
-  CHECK_GE(call_count, SharedFunctionInfo::kGenerousAllocationCount);
+  unsigned int call_count = JSFunction::kGenerousAllocationCount + 2;

[Michael Starzinger, 2014/05/21 10:42:01]

nit: Likewise, plain "int" should do it here.

[Igor Sheludko, 2014/05/22 08:05:42]

Done. Actually now there should be exactly call_count mementos allocated.

   i::ScopedVector<char> test_buf(1024);
   const char* program =
       "function f() {"
@@ -119,6 +118,6 @@ TEST(PretenuringCallNew) {
   // Furthermore, how many mementos did we create? The count should match
   // call_count - SharedFunctionInfo::kGenerousAllocationCount.
   AllocationSite* site = memento->GetAllocationSite();
-  CHECK_EQ(call_count - SharedFunctionInfo::kGenerousAllocationCount,
+  CHECK_EQ(call_count - JSFunction::kGenerousAllocationCount,
            site->pretenure_create_count()->value());
 }