HStoreKeyed for Smis optimized for x64 + related redundant moves of elements removed

src/elements-kind.h

Index: src/elements-kind.h
diff --git a/src/elements-kind.h b/src/elements-kind.h
index 51a690272f7f122848c3c30538bf9dadbceab7b5..1975cc458b401fd489f3bd51431c3ee92d9a164f 100644
--- a/src/elements-kind.h
+++ b/src/elements-kind.h
@@ -167,6 +167,11 @@ inline bool IsFastPackedElementsKind(ElementsKind kind) {
 }
 
 
+inline bool IsFastPackedSmiElementsKind(ElementsKind kind) {

[Toon Verwaest, 2013/12/17 13:53:04]

I wouldn't add this method. Just directly compare with FAST_SMI_ELEMENTS.

[Igor Sheludko, 2013/12/18 10:01:33]

Done.

+  return kind == FAST_SMI_ELEMENTS;
+}
+
+
 inline ElementsKind GetPackedElementsKind(ElementsKind holey_kind) {
   if (holey_kind == FAST_HOLEY_SMI_ELEMENTS) {
     return FAST_SMI_ELEMENTS;