[stubs] Fix AccessorInfo mixup in KeyedStoreGeneric

BUG=chromium:668101

Review-Url: https://codereview.chromium.org/2525913002
Cr-Commit-Position: refs/heads/master@{#41223}

src/code-stub-assembler.h

@@ -21,7 +21,7 @@ class StubCache;
 enum class PrimitiveType { kBoolean, kNumber, kString, kSymbol };
 
 #define HEAP_CONSTANT_LIST(V)                         \
-  V(AccessorPairMap, AccessorPairMap)                 \
+  V(AccessorInfoMap, AccessorInfoMap)                 \
   V(BooleanMap, BooleanMap)                           \
   V(CodeMap, CodeMap)                                 \
   V(empty_string, EmptyString)                        \

src/ic/keyed-store-generic.cc

@@ -676,7 +676,7 @@ void KeyedStoreGenericAssembler::EmitGenericPropertyStore(
   {
     Label not_callable(this);
     Node* accessor_pair = var_accessor_pair.value();
-    GotoIf(IsAccessorPairMap(LoadMap(accessor_pair)), slow);
+    GotoIf(IsAccessorInfoMap(LoadMap(accessor_pair)), slow);
     CSA_ASSERT(this, HasInstanceType(accessor_pair, ACCESSOR_PAIR_TYPE));
     Node* setter = LoadObjectField(accessor_pair, AccessorPair::kSetterOffset);
     Node* setter_map = LoadMap(setter);

test/mjsunit/regress/regress-crbug-668101.js

+// Copyright 2016 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.
+
+// Flags: --allow-natives-syntax
+
+function f(a, i, v) {
+  a[i] = v;
+}
+
+f("make it generic", 0, 0);
+
+var a = new Array(3);
+// Fast properties.
+f(a, "length", 2);
+assertEquals(2, a.length);
+
+// Dictionary properties.
+%OptimizeObjectForAddingMultipleProperties(a, 1);
+f(a, "length", 1);
+assertEquals(1, a.length);