Create AllocationSite objects, pointed to by AllocationSiteInfo.

src/objects-debug.cc

Index: src/objects-debug.cc
diff --git a/src/objects-debug.cc b/src/objects-debug.cc
index a7189c5a940eec9a6ca25f70542bf40e07ab84f1..b42a35aa2415201bb9bf72dcfc9404f8e656dfed 100644
--- a/src/objects-debug.cc
+++ b/src/objects-debug.cc
@@ -914,10 +914,15 @@ void TypeSwitchInfo::TypeSwitchInfoVerify() {
 }
 
 
+void AllocationSite::AllocationSiteVerify() {
+  CHECK(IsAllocationSite());
+}
+
+
 void AllocationSiteInfo::AllocationSiteInfoVerify() {
   CHECK(IsAllocationSiteInfo());
-  VerifyHeapPointer(payload());
-  CHECK(payload()->IsObject());
+  VerifyHeapPointer(allocation_site());
+  CHECK(!IsValid() || GetAllocationSite()->IsAllocationSite());
 }