Transitions from DOUBLE to FAST were not checking for allocation site info.

test/mjsunit/array-literal-feedback.js

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 26 matching lines @@
 
 // support_smi_only_arrays = %HasFastSmiElements(new Array(1,2,3,4,5,6,7,8));
 support_smi_only_arrays = true;
 
 if (support_smi_only_arrays) {
   print("Tests include smi-only arrays.");
 } else {
   print("Tests do NOT include smi-only arrays.");
 }
 
+var elements_kind = {
+  fast_smi_only            :  'fast smi only elements',
+  fast                     :  'fast elements',
+  fast_double              :  'fast double elements',
+  dictionary               :  'dictionary elements',
+  external_byte            :  'external byte elements',
+  external_unsigned_byte   :  'external unsigned byte elements',
+  external_short           :  'external short elements',
+  external_unsigned_short  :  'external unsigned short elements',
+  external_int             :  'external int elements',
+  external_unsigned_int    :  'external unsigned int elements',
+  external_float           :  'external float elements',
+  external_double          :  'external double elements',
+  external_pixel           :  'external pixel elements'
+}
+
+function getKind(obj) {
+  if (%HasFastSmiElements(obj)) return elements_kind.fast_smi_only;
+  if (%HasFastObjectElements(obj)) return elements_kind.fast;
+  if (%HasFastDoubleElements(obj)) return elements_kind.fast_double;
+  if (%HasDictionaryElements(obj)) return elements_kind.dictionary;
+}
+
+function isHoley(obj) {
+  if (%HasFastHoleyElements(obj)) return true;
+  return false;
+}
+
+function assertKind(expected, obj, name_opt) {
+  if (!support_smi_only_arrays &&
+      expected == elements_kind.fast_smi_only) {
+    expected = elements_kind.fast;
+  }
+  assertEquals(expected, getKind(obj), name_opt);
+}
+
 if (support_smi_only_arrays) {
 
   function get_literal(x) {
     var literal = [1, 2, x];
     return literal;
   }
 
   get_literal(3);
   get_literal(3);
   %OptimizeFunctionOnNextCall(get_literal);
   a = get_literal(3);
   assertOptimized(get_literal);
   assertTrue(%HasFastSmiElements(a));
   a[0] = 3.5;
 
   // We should have transitioned the boilerplate array to double, and
   // crankshafted code should de-opt on the unexpected elements kind
   b = get_literal(3);
   assertTrue(%HasFastDoubleElements(b));
   assertEquals([1, 2, 3], b);
   assertUnoptimized(get_literal);
 
   // Optimize again
   get_literal(3);
   %OptimizeFunctionOnNextCall(get_literal);
   b = get_literal(3);
   assertTrue(%HasFastDoubleElements(b));
   assertOptimized(get_literal);
+
+
+  // Test: make sure allocation site information is updated through a
+  // transition from SMI->DOUBLE->FAST
+  (function() {
+    function bar(a, b, c) {
+      return [a, b, c];
+    }
+
+    a = bar(1, 2, 3);
+    a[0] = 3.5;
+    a[1] = 'hi';
+    b = bar(1, 2, 3);
+    assertKind(elements_kind.fast, b);
+  })();
 }