Status: New
Owner: [email protected]
Labels: Type-Bug Priority-Medium
New issue 2206 by [email protected]: Checking SharedFunctionInfo
identity instead of closure identity for inlining
http://code.google.com/p/v8/issues/detail?id=2206
Consider code like this:
function ounter() {
function inner1() {
inner2();
}
function inner2() {
}
for (var i = 0; i < 1000; i++) inner1();
}
In this case both inner1 and inner2 should be inlined into outer. However
this is not possible with the current inlining infrastructure because it
relies on closure identity.
It seems that switching to checks (and type-feedback) based on
SharedFunctionInfo should enable better inlining and also better code
sharing between instances of the same closure.
In some cases (like the example above) checks can also be omitted entirely
based on static information from the parser.
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