RFR(XS): 7035117: G1: nsk/stress/jni/jnistress002 fails with an assertion failure caused by changes for 7009266

[John Cuthbertson]

Hi Everyone,

I have a new webrev for this CR here: 
http://cr.openjdk.java.net/~johnc/7035117/webrev.1/

The changes include Tom's suggestion to use ConX in C2 code and the fix 
for the same test in tiered compilation/C1.

Testing: the failing test case, nsk tests, jprt.

Thanks,

JohnC

On 04/08/11 11:04, John Cuthbertson wrote:
> Hi Everyone,
>
> Can I have a couple of volunteers to look over the fix for this CR? 
> The webrev can be found at: 
> http://cr.openjdk.java.net/~johnc/7035177/webrev.0/.
>
> The problem is that the node representing the offset (in an 
> Unsafe.getObject compilation) could be typed as a long and generating 
> the compare of offset against java_lang_ref_Reference::referent_offset 
> (typed as an int) caused an assertion failure about the mis-matching 
> types.
>
> The fix is to generate a suitably typed constant based upon the type 
> of "offset".
>
> Tested using the failing test case from the nightly tests.
>
> Thanks,
>
> JohnC
>