Distinguish slow from fast sloppy arguments

src/elements-kind.h

Index: src/elements-kind.h
diff --git a/src/elements-kind.h b/src/elements-kind.h
index fb973411eccb3f07a989d132b66bc7e4bed30678..b7d169b82e9ebbdb8393bd826864530bd06a0733 100644
--- a/src/elements-kind.h
+++ b/src/elements-kind.h
@@ -28,7 +28,10 @@ enum ElementsKind {
 
   // The "slow" kind.
   DICTIONARY_ELEMENTS,
-  SLOPPY_ARGUMENTS_ELEMENTS,
+
+  FAST_SLOPPY_ARGUMENTS_ELEMENTS,
+  SLOW_SLOPPY_ARGUMENTS_ELEMENTS,
+
   // The "fast" kind for external arrays
   EXTERNAL_INT8_ELEMENTS,
   EXTERNAL_UINT8_ELEMENTS,
@@ -88,7 +91,8 @@ inline bool IsDictionaryElementsKind(ElementsKind kind) {
 
 
 inline bool IsSloppyArgumentsElements(ElementsKind kind) {
-  return kind == SLOPPY_ARGUMENTS_ELEMENTS;
+  return kind == FAST_SLOPPY_ARGUMENTS_ELEMENTS ||
+         kind == SLOW_SLOPPY_ARGUMENTS_ELEMENTS;
 }
 
 
@@ -117,7 +121,8 @@ inline bool IsFastElementsKind(ElementsKind kind) {
 
 
 inline bool IsTransitionElementsKind(ElementsKind kind) {
-  return IsFastElementsKind(kind) || IsFixedTypedArrayElementsKind(kind);
+  return IsFastElementsKind(kind) || IsFixedTypedArrayElementsKind(kind) ||
+         kind == FAST_SLOPPY_ARGUMENTS_ELEMENTS;
 }
 
 
@@ -239,19 +244,6 @@ inline bool IsTransitionableFastElementsKind(ElementsKind from_kind) {
 }
 
 
-ElementsKind GetNextMoreGeneralFastElementsKind(ElementsKind elements_kind,
-                                                bool allow_only_packed);
-
-
-inline bool CanTransitionToMoreGeneralFastElementsKind(
-    ElementsKind elements_kind,
-    bool allow_only_packed) {
-  return IsFastElementsKind(elements_kind) &&
-      (elements_kind != TERMINAL_FAST_ELEMENTS_KIND &&
-       (!allow_only_packed || elements_kind != FAST_ELEMENTS));
-}
-
-
 } }  // namespace v8::internal
 
 #endif  // V8_ELEMENTS_KIND_H_