Implement ICs for FastDoubleArray loads and stores

src/v8globals.h

Index: src/v8globals.h
diff --git a/src/v8globals.h b/src/v8globals.h
index a23ca194aa61fd0983b58d4efdcf6fe06c20a36e..0e5390e5df881ade9664b41722baa0875ef92a17 100644
--- a/src/v8globals.h
+++ b/src/v8globals.h
@@ -507,6 +507,18 @@ enum CallKind {
   CALL_AS_FUNCTION
 };
 
+
+static const uint32_t kHoleNanUpper32 = 0x7FFFFFFF;
+static const uint32_t kHoleNanLower32 = 0xFFFFFFFF;
+static const uint32_t kCanonicalNonHoleNanUpper32 = 0x7FF10000;
+static const uint32_t kCanonicalNonHoleNanLower32 = 0xFFFFFFFF;
+
+const uint64_t kHoleNanInt64 =
+    (static_cast<uint64_t>(kHoleNanUpper32) << 32) | kHoleNanLower32;
+const uint64_t kCanonicalNonHoleNanInt64 =
+    (static_cast<uint64_t>(kCanonicalNonHoleNanUpper32) << 32) |
+        kCanonicalNonHoleNanLower32;
+
 } }  // namespace v8::internal
 
 #endif  // V8_V8GLOBALS_H_