RFR(S) 8149607: [Verifier] Do not verify pop, pop2, swap, dup* against top

[Coleen Phillimore]

Harold,

This looks good.  Nice test!

Coleen

On 8/31/16 2:21 PM, harold seigel wrote:
> Hi,
>
> Please review this verifier fix to disallow popping a single operand 
> of type 'top' from the stack in case it's the upper half of a long or 
> double operand.  See the Java Virtual Machine Spec 
> <http://docs.oracle.com/javase/specs/jvms/se8/html/jvms-4.html#jvms-4.10.1.2> 
> for information about type 'top' operands.
>
> JBS Bug: https://bugs.openjdk.java.net/browse/JDK-8149607
>
> Open webrev: http://cr.openjdk.java.net/~hseigel/bug_8149607/
>
> The fix was tested with the JCK Lang and VM tests, the hotpot, and 
> java/lang, java/util and other JTreg tests, and the NSK colocated and 
> non-colocated quick tests.
>
> Thanks, Harold