RFR(S): 8238869: [lworld] C2's slow path allocation does not set the larval bit

[Tobias Hartmann]

On 14.02.20 12:42, Tobias Hartmann wrote:
> Right, it probably doesn't make a difference. Here's a new webrev:
> http://cr.openjdk.java.net/~thartmann/8238869/webrev.01/

Just noticed that with this, we need to update our IR match rules to handle the initialization of
the new argument. While fixing that, I've noticed that the match rule for array allocation is broken
(doesn't handle "Q" in the precise klass statement). I've fixed it as well and added some additional
annotations to the tests to catch this in the future.

Updated webrev in-place.

Thanks,
Tobias