Adapt Danno's Track Allocation Info idea to fast literals. When allocating a literal array,

src/code-stubs.h

Index: src/code-stubs.h
diff --git a/src/code-stubs.h b/src/code-stubs.h
index 527abde958843aa2bbaa255949b43c0a4316efb8..4fc500cc2d1524fc711ac057d2333d9b3e2017dd 100644
--- a/src/code-stubs.h
+++ b/src/code-stubs.h
@@ -422,14 +422,17 @@ class FastCloneShallowArrayStub : public PlatformCodeStub {
  public:
   // Maximum length of copied elements array.
   static const int kMaximumClonedLength = 8;
-
   enum Mode {
     CLONE_ELEMENTS,
     CLONE_DOUBLE_ELEMENTS,
     COPY_ON_WRITE_ELEMENTS,
-    CLONE_ANY_ELEMENTS
+    CLONE_ANY_ELEMENTS,
+    CLONE_ANY_ELEMENTS_WITH_ALLOCATION_SITE_INFO,
+    LAST_CLONE_MODE = CLONE_ANY_ELEMENTS_WITH_ALLOCATION_SITE_INFO
   };
 
+  static const int kFastCloneModeCount = LAST_CLONE_MODE + 1;
+
   FastCloneShallowArrayStub(Mode mode, int length)
       : mode_(mode),
         length_((mode == COPY_ON_WRITE_ELEMENTS) ? 0 : length) {
@@ -445,8 +448,8 @@ class FastCloneShallowArrayStub : public PlatformCodeStub {
 
   Major MajorKey() { return FastCloneShallowArray; }
   int MinorKey() {
-    ASSERT(mode_ == 0 || mode_ == 1 || mode_ == 2 || mode_ == 3);
-    return length_ * 4 +  mode_;
+    ASSERT(mode_ >= 0 && mode_ <= LAST_CLONE_MODE);
+    return length_ * kFastCloneModeCount + mode_;
   }
 };