What should happen here?

[Walter Bright]

On 9/25/2021 6:02 PM, Steven Schveighoffer wrote:
> As I said, the optimizer is fighting you the entire way.

I'd reframe it as the user is trying to impose his own semantics on the 
optimizer :-)

Selecting semantics that enable aggressive optimizations is always a dance 
between user predictability and high performance. High performance usually wins.

Disabling dead assignment elimination would have a catastrophic deleterious 
effect on optimizations. A lot of template bloat would remain.


> But I still am wishing for a simple "keep this alive" mechanism that doesn't add 
> too much cruft, and is guaranteed to keep it alive.

That's exactly what addRoot() is for.