Hydrogen: fix keyed loads with string keys

src/ic/ic.h

Index: src/ic/ic.h
diff --git a/src/ic/ic.h b/src/ic/ic.h
index 5ed8082ed1e05e07dd3e0bf4dd0f4408a003c0b7..5db3ba741e8040e1c5eb818b24104396171df933 100644
--- a/src/ic/ic.h
+++ b/src/ic/ic.h
@@ -434,6 +434,14 @@ class LoadIC : public IC {
 
 class KeyedLoadIC : public LoadIC {
  public:
+  static ExtraICState ComputeExtraICState(IcCheckType key_type) {
+    return KeyedLoadICState(key_type).GetExtraICState();
+  }
+
+  IcCheckType GetKeyType() const {
+    return KeyedLoadICState::GetKeyType(extra_ic_state());
+  }
+
   explicit KeyedLoadIC(FrameDepth depth, Isolate* isolate)
       : LoadIC(depth, isolate) {
     DCHECK(target()->is_keyed_load_stub());
@@ -465,12 +473,14 @@ class KeyedLoadIC : public LoadIC {
 
  protected:
   // receiver is HeapObject because it could be a String or a JSObject
-  Handle<Code> LoadElementStub(Handle<HeapObject> receiver);
+  Handle<Code> LoadElementStub(Handle<HeapObject> receiver,
+                               Handle<Object> key);
   virtual Handle<Code> pre_monomorphic_stub() const {
     return pre_monomorphic_stub(isolate());
   }
 
  private:
+  inline void set_target(Code* code);

[Jakob Kummerow, 2014/12/10 15:21:18]

Why do you need to override this? Can you explain why ContextualMode doesn't
matter for keyed loads?

   Handle<Code> generic_stub() const { return generic_stub(isolate()); }
 
   static void Clear(Isolate* isolate, Address address, Code* target,