Hydrogen code stubs for vector-based ICs.

test/cctest/test-feedback-vector.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/v8.h"
 #include "test/cctest/cctest.h"
 
 #include "src/api.h"
 #include "src/debug.h"
 #include "src/execution.h"
@@ skipping 22 matching lines @@
   CHECK_EQ(0, vector->ic_generic_count());
   CHECK_EQ(0, vector->Slots());
   CHECK_EQ(0, vector->ICSlots());
 
   FeedbackVectorSpec one_slot(1, 0);
   vector = factory->NewTypeFeedbackVector(one_slot);
   CHECK_EQ(1, vector->Slots());
   CHECK_EQ(0, vector->ICSlots());
 
   FeedbackVectorSpec one_icslot(0, 1);
+  if (FLAG_vector_ics) {
+    one_icslot.SetKind(0, Code::CALL_IC);
+  }
   vector = factory->NewTypeFeedbackVector(one_icslot);
   CHECK_EQ(0, vector->Slots());
   CHECK_EQ(1, vector->ICSlots());
 
   FeedbackVectorSpec spec(3, 5);
+  if (FLAG_vector_ics) {
+    for (int i = 0; i < 5; i++) spec.SetKind(i, Code::CALL_IC);
+  }
   vector = factory->NewTypeFeedbackVector(spec);
   CHECK_EQ(3, vector->Slots());
   CHECK_EQ(5, vector->ICSlots());
 
   int metadata_length = vector->ic_metadata_length();
   if (!FLAG_vector_ics) {
     CHECK_EQ(0, metadata_length);
   } else {
     CHECK(metadata_length > 0);
   }
@@ skipping 230 matching lines @@
   CHECK_EQ(POLYMORPHIC, nexus.StateFromFeedback());
   MapHandleList maps;
   nexus.FindAllMaps(&maps);
   CHECK_EQ(4, maps.length());
 
   // Finally driven megamorphic.
   CompileRun("f({ blarg: 3, gran: 3, torino: 10, foo: 2 })");
   CHECK_EQ(MEGAMORPHIC, nexus.StateFromFeedback());
   CHECK_EQ(NULL, nexus.FindFirstMap());
 
-  // After a collection, state should be reset to PREMONOMORPHIC.
+  // After a collection, state should not be reset to PREMONOMORPHIC.
   heap->CollectAllGarbage(i::Heap::kNoGCFlags);
-  CHECK_EQ(PREMONOMORPHIC, nexus.StateFromFeedback());
+  CHECK_EQ(MEGAMORPHIC, nexus.StateFromFeedback());
 }
 }