Reviewers: fschneider,
Description:
Revert "Immediately use the generic stub when storing into COW arrays"
Due to unexpected performance implications.
This reverts r10429.
Please review this at https://chromiumcodereview.appspot.com/9150032/
SVN Base: https://v8.googlecode.com/svn/branches/bleeding_edge
Affected files:
M src/ic.cc
Index: src/ic.cc
diff --git a/src/ic.cc b/src/ic.cc
index
1026f6d40f8f15d1e189e97addf96ff719153a34..4361ba2ee0b80e02a11391b76ad25887b1064fcd
100644
--- a/src/ic.cc
+++ b/src/ic.cc
@@ -1677,9 +1677,6 @@ MaybeObject* KeyedStoreIC::Store(State state,
if (receiver->elements()->map() ==
isolate()->heap()->non_strict_arguments_elements_map()) {
stub = non_strict_arguments_stub();
- } else if (receiver->elements()->map() ==
- isolate()->heap()->fixed_cow_array_map()) {
- // Do nothing, just keep the generic stub.
} else if (!force_generic) {
if (key->IsSmi() && (target() != *non_strict_arguments_stub())) {
StubKind stub_kind = STORE_NO_TRANSITION;
--
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