[ic] Split megamorphic stub cache in two caches (for loads and for stores).

src/ic/stub-cache.cc

Index: src/ic/stub-cache.cc
diff --git a/src/ic/stub-cache.cc b/src/ic/stub-cache.cc
index f51366f86033c52129e65b14a7dcc473cbaa4e8b..4a834b82ba6f7603befe46eed7f1a811cf0d560a 100644
--- a/src/ic/stub-cache.cc
+++ b/src/ic/stub-cache.cc
@@ -10,9 +10,8 @@
 namespace v8 {
 namespace internal {
 
-
-StubCache::StubCache(Isolate* isolate) : isolate_(isolate) {}
-
+StubCache::StubCache(Isolate* isolate, Code::Kind ic_kind)
+    : isolate_(isolate), ic_kind_(ic_kind) {}
 
 void StubCache::Initialize() {
   DCHECK(base::bits::IsPowerOfTwo32(kPrimaryTableSize));