[Enh]: 8230091: Add verification of clean_catch_blocks

[Rickard Bäckman]

Looks good!

/R

On 08/23, Nils Eliasson wrote:
> Hi,
> 
> This patch adds some verfication of clean_catch_blocks in zBarrierSetC2.
> This would have catched the bug i recently fixed: JDK-8229970
> 
> Bug: https://bugs.openjdk.java.net/browse/JDK-8230091
> 
> Webrev: http://cr.openjdk.java.net/~neliasso/8230091/webrev.01/
> 
> Regards,
> 
> Nils
>