RFR(T/XS): 8225509: clean_catch_blocks must add preds first

[Vladimir Kozlov]

Good.

Thanks,
Vladimir

On 6/10/19 6:55 AM, Nils Eliasson wrote:
> Hi,
> 
> When the late load barrier insertion is handling loads in clean_catch_blocks, the pushing of predecessor nodes on the 
> iteration stack must be done before the processing of a load, because it changes the graph.
> 
> Bug: https://bugs.openjdk.java.net/browse/JDK-8225509
> 
> Webrev: http://cr.openjdk.java.net/~neliasso/8225509/webrev.01/
> 
> Please review,
> 
> Nils
>