[13] RFR(S): 8213249: compiler/graalunit/HotspotTest.java failed in ExplicitExceptionTest

[Tobias Hartmann]

Hi,

please review the following patch:
https://bugs.openjdk.java.net/browse/JDK-8213249
http://cr.openjdk.java.net/~thartmann/8213249/webrev.01/

The problem is C2's -XX:OmitStackTraceInFastThrow which is enabled by default. Instead of
deoptimizing at frequent throws (such as the ArrayIndexOutOfBoundsException in this case), C2 emits
code to throw a pre-allocated exception object (see code in GraphKit::builtin_throw()) which has a
null message.

Thanks,
Tobias