Inline array constructor.

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index 99c160b51d5c79e93fa2675745387428fa207c31..5676811b177f8e4c41d51a967e59ae5793a83ac9 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -5563,7 +5563,13 @@ class DependentCode: public FixedArray {
     // Group of code that depends on global property values in property cells
     // not being changed.
     kPropertyCellChangedGroup,
-    kGroupCount = kPropertyCellChangedGroup + 1
+    // Group of code that depends on tenuring information in AllocationSites
+    // not being changed.
+    kAllocationSiteTenuringChangedGroup,
+    // Group of code that depends on element transition information in
+    // AllocationSites not being changed.
+    kAllocationSiteTransitionChangedGroup,
+    kGroupCount = kAllocationSiteTransitionChangedGroup + 1
   };
 
   // Array for holding the index of the first code object of each group.
@@ -8077,13 +8083,31 @@ class AllocationSite: public Struct {
   // This method is expensive, it should only be called for reporting.
   bool IsNestedSite();
 
+  static const int kElementsKindMask = 0xffff;

[Toon Verwaest, 2013/11/06 16:42:44]

Is there a reason why you don't use BitFields?

[mvstanton, 2013/11/07 16:34:05]

Nope, now I do, thx!

+  static const int kFlagsMask = 0x7fff0000;
+
   ElementsKind GetElementsKind() {
     ASSERT(!SitePointsToLiteral());
-    return static_cast<ElementsKind>(Smi::cast(transition_info())->value());
+    int value = Smi::cast(transition_info())->value();
+    value = value & kElementsKindMask;
+    return static_cast<ElementsKind>(value);
   }
 
   void SetElementsKind(ElementsKind kind) {
-    set_transition_info(Smi::FromInt(static_cast<int>(kind)));
+    int value = Smi::cast(transition_info())->value();
+    value = (value & kFlagsMask) | static_cast<int>(kind);
+    set_transition_info(Smi::FromInt(value));
+  }
+
+  bool DoNotInlineCall() {
+    int value = Smi::cast(transition_info())->value();
+    return (value & kFlagsMask) != 0;
+  }
+
+  void SetDoNotInlineCall() {
+    int value = Smi::cast(transition_info())->value();
+    value |= (1 << 16);
+    set_transition_info(Smi::FromInt(value));
   }
 
   bool SitePointsToLiteral() {
@@ -8093,6 +8117,16 @@ class AllocationSite: public Struct {
     return transition_info()->IsJSArray() || transition_info()->IsJSObject();
   }
 
+  MaybeObject* DigestTransitionFeedback(ElementsKind to_kind);
+
+  enum Reason {
+    TENURING,
+    TRANSITIONS
+  };
+
+  void AddDependentCompilationInfo(Reason reason, CompilationInfo* info);
+  void AddDependentCode(Reason reason, Handle<Code> code);
+
   DECLARE_PRINTER(AllocationSite)
   DECLARE_VERIFIER(AllocationSite)
 
@@ -8113,6 +8147,7 @@ class AllocationSite: public Struct {
                               kSize> BodyDescriptor;
 
  private:
+  inline DependentCode::DependencyGroup ToDependencyGroup(Reason reason);
   DISALLOW_IMPLICIT_CONSTRUCTORS(AllocationSite);
 };