Hi
Given an object
var obj1 = {
'x': 'foo',
'y': 'bar',
'z': 'baz'
};
When I access a property with dot-notation in a function
function getPropDot1() {
return obj1.x;
}
getPropDot1();
the function gets optimized.
When I access the property with bracket-notation
function getPropBrackets1(id) {
return obj1[id];
}
getPropBrackets1('x');
a deopt will happen.
Inspecting the IR produced by Hydrogen I found a 'Change' code that seems
to try to convert the property name 'x' to an int32, fails (NaN) and thus
deoptimizes.
a) Why is this?
b) How can it be prevented?
Thanks for clarification.
Regards, Mathias
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