[vector] RFR (M): Ensure intrinsics are parameterized with non-capturing lambdas

[John Rose]

Reviewed, with pleasure.

"Save months of performance debugging with this one weird trick!"

— John

On Feb 20, 2019, at 2:32 PM, Vladimir Ivanov <vladimir.x.ivanov at oracle.com> wrote:
> 
> http://cr.openjdk.java.net/~vlivanov/panama/vector/intrin.non_capturing/webrev.00/
> 
> Default implementations are implemented as lambdas and capturing introduces problems for EA and even if intrinsification happens may leave unused objects behind.
> 
> The patch:
> 
> * introduces an adhoc check (VectorIntrinsics.isNonCapturingLambda()) and asserts all default implementations satisfy it;
> 
> * instruments existing tests to run with assertions enabled;
> 
> * fixes all occurrences of capturing lambdas in the code (so test results are clean).
> 
> Best regards,
> Vladimir Ivanov