Revision: 15594
Author: [email protected]
Date: Wed Jul 10 06:24:51 2013
Log: Insert HTrapAllocationMemento only when required for
TransitionElementsKindStub.
[email protected]
Review URL: https://codereview.chromium.org/18292018
http://code.google.com/p/v8/source/detail?r=15594
Modified:
/branches/bleeding_edge/src/code-stubs-hydrogen.cc
=======================================
--- /branches/bleeding_edge/src/code-stubs-hydrogen.cc Wed Jul 10 05:19:02
2013
+++ /branches/bleeding_edge/src/code-stubs-hydrogen.cc Wed Jul 10 06:24:51
2013
@@ -528,12 +528,18 @@
template <>
HValue* CodeStubGraphBuilder<TransitionElementsKindStub>::BuildCodeStub() {
+ TransitionElementsKindStub* stub = casted_stub();
+ ElementsKind from_kind = stub->from_kind();
+ ElementsKind to_kind = stub->to_kind();
+
HValue* js_array = GetParameter(0);
HValue* map = GetParameter(1);
info()->MarkAsSavesCallerDoubles();
- Add<HTrapAllocationMemento>(js_array);
+ if (AllocationSite::GetMode(from_kind, to_kind) ==
TRACK_ALLOCATION_SITE) {
+ Add<HTrapAllocationMemento>(js_array);
+ }
HInstruction* array_length =
AddLoad(js_array, HObjectAccess::ForArrayLength());
@@ -550,9 +556,7 @@
HInstruction* elements_length = AddLoadFixedArrayLength(elements);
- BuildGrowElementsCapacity(js_array, elements,
- casted_stub()->from_kind(),
- casted_stub()->to_kind(),
+ BuildGrowElementsCapacity(js_array, elements, from_kind, to_kind,
array_length, elements_length);
if_builder.End();
--
--
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