Revision: 24618
Author: [email protected]
Date: Wed Oct 15 08:48:44 2014 UTC
Log: Let FastCloneShallowObjectStub work with empty literal objects.
[email protected]
LOG=N
BUG=417290
Review URL: https://codereview.chromium.org/655163002
https://code.google.com/p/v8/source/detail?r=24618
Modified:
/branches/bleeding_edge/src/code-stubs-hydrogen.cc
=======================================
--- /branches/bleeding_edge/src/code-stubs-hydrogen.cc Mon Oct 13 07:50:21
2014 UTC
+++ /branches/bleeding_edge/src/code-stubs-hydrogen.cc Wed Oct 15 08:48:44
2014 UTC
@@ -416,7 +416,12 @@
HInstruction* boilerplate = Add<HLoadNamedField>(
allocation_site, static_cast<HValue*>(NULL), access);
- int size = JSObject::kHeaderSize + casted_stub()->length() *
kPointerSize;
+ int length = casted_stub()->length();
+ if (length == 0) {
+ // Empty objects have some slack added to them.
+ length = JSObject::kInitialGlobalObjectUnusedPropertiesCount;
+ }
+ int size = JSObject::kHeaderSize + length * kPointerSize;
int object_size = size;
if (FLAG_allocation_site_pretenuring) {
size += AllocationMemento::kSize;
--
--
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