Request for reviews (XXS): 7003130: assert(iterations<CG_BUILD_ITER_LIMIT) failed: infinite EA connection graph

[Igor Veresov]

Looks good.

igor

On 12/21/10 10:51 AM, Vladimir Kozlov wrote:
> http://cr.openjdk.java.net/~kvn/7003130/webrev
>
> Fixed 7003130: assert(iterations<CG_BUILD_ITER_LIMIT) failed: infinite
> EA connection graph
>
> It seems, 10 for CG_BUILD_ITER_LIMIT is small.
> I rerun current VM with jvm2008 and observed 8 iterations.
> So a case with 10 may be not as rare as I thought.
> I tried to collect statistic on the correlation
> of this number with total number of nodes and number
> of particular idead nodes (addp,load,store,call) but
> I did not find any correlation. It seems, it depends
> more on the order of nodes on worklist than on number
> of nodes.
>
> Bumping CG_BUILD_ITER_LIMIT to 20.
>
> Note: in product VM we recompile a method without EA
> so it is not a critical problem.