engine specific optimization changes. V8 can't inline getters and optimize for(i in object) loops. I can do this because JSC doesn't have support for HeapProfiler. RESULT heap-snapshot: _buildAggregates= 1509 ms RESULT heap-snapshot: _calculateClassesRetainedSize= 1886 ms vs RESULT heap-snapshot: _buildAggregates= 665 ms RESULT heap-snapshot: _calculateClassesRetainedSize= 1293 ms
Created attachment 143298 [details] Patch
Committed r117973: <http://trac.webkit.org/changeset/117973>