RFR(XS): 8167300: Local scheduling failures during gcm should be fatal

[Vladimir Kozlov]

Hi Roland,

First, I can find who can set failure reason in LCM. Can you point me?

Second, is not better for debugging to add assert in a place where we 
record failure instead of waiting when we exit compilation?

Third, should we do the same for late schedule failure?:
   C->record_method_not_compilable("late schedule failed: incorrect graph");

Thanks,
Vladimir

On 10/6/16 9:32 AM, Roland Westrelin wrote:
>
> http://cr.openjdk.java.net/~roland/8167300/webrev.00/
>
> As discussed in:
> http://mail.openjdk.java.net/pipermail/hotspot-compiler-dev/2016-September/024531.html
>
> this change makes failure to schedule fatal in debug builds.
>
> Roland.
>