Updates:
Status: Assigned
Owner: [email protected]
Comment #1 on issue 3605 by [email protected]: TypeFeedbackInfo
somehow getting more than 100% of ICs with typeinfo
https://code.google.com/p/v8/issues/detail?id=3605
Small repro with --expose-gc:
----------------------------
function foo(f) { f(); }
function bar(f) { f(); }
function fun() {}
foo(Array);
foo(Object);
foo(fun);
bar(fun)
gc();
foo(fun);
bar(fun);
gc();
for (var i = 0; i < 1000; i++) bar(fun);
for (var i = 0; i < 1000; i++) foo(fun);
----------------------------
--trace-opt reports:
[marking 0x38748b21 <JS Function bar (SharedFunctionInfo 0x3874895d)> for
recompilation, reason: small function, ICs with typeinfo: 3/1 (300%),
generic ICs: 0/1 (0%)]
...
[not yet optimizing foo, not enough type info: 2/1 (200%)]
This seems to be related to CallICs' special handling of type feedback.
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