Status: Accepted
Owner: [email protected]
CC: [email protected], [email protected], [email protected]
Labels: Type-Bug Priority-Medium
New issue 2774 by [email protected]: CountOperation and
CompoundAssignment provide type feedback for observed maps, breaking
crankshaft.
http://code.google.com/p/v8/issues/detail?id=2774
This fails since I unified CountOperation and CompoundAssignment with other
assignments because the design was inconsistent. We are not supposed to get
any type feedback in crankshaft for any observed assignments, so we
shouldn't be filtering them out there.
The following test fails:
function add(o) {
o.x++; // CountOperation.
o.x += 5; // CompoundAssignment.
}
var count = 0;
function cl(c) {
count++;
}
var o = {x:0};
Object.observe(o, cl);
assertEquals(0, count);
add(o);
Object.deliverChangeRecords(cl);
assertEquals(1, count);
add(o);
Object.deliverChangeRecords(cl);
assertEquals(2, count);
%OptimizeFunctionOnNextCall(add);
add(o);
Object.deliverChangeRecords(cl);
assertEquals(3, count);
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