More performance explorations

[John Rose]

On May 26, 2011, at 5:18 PM, Charles Oliver Nutter wrote:

> Some combination of
> these flags will be enabled by default as they get optimized in
> Hotspot. That should allow having things "on" as they're ready to be
> on by default.

That's the way we do it in the JVM also, on works-in-progress which have uncertain stability or performance.  When all the tests pass, we flip the flag's default value.

At one point, for example, EnableInvokeDynamic started defaulting to true.

-- John