RFR(S): 8182755: [JVMCI] Deoptimization in synchronized methods can lead to a crash or exception when using EnableJVMCI but not UseJVMCICompiler

[Gilles Duboscq]

Please review the following fix for deoptimization when using +EnableJVMCI and -UseJVMCICompiler.
In this mode there can still be methods compiled by JVMCI so the interpreter needs to support potential pending monitors.

Bug: https://bugs.openjdk.java.net/browse/JDK-8182755
Webrev: http://cr.openjdk.java.net/~gdub/webrev-8182755/

 Gilles