[aarch64-port-dev ] RFR: 8170188: jtreg compiler/types/TestMeetIncompatibleInterfaceArrays.java causes JVM crash

[Sergey Nazarkin]

Hi!

please review the fix [1] to solve JVM crash when compiler/types/TestMeetIncompatibleInterfaceArrays.java  test is executed. 

The crash happens at ANDS generation procedure since imm encoder fails to convert zero value.  And it has to fail according ARMv8 arch ref manual. 

The patch detects invalid case and replace ANDS(Rd, Rn, imm) with ANDS(RD, Rn, ZeroReg)

[1] http://cr.openjdk.java.net/~snazarki/8170188/
[2] https://bugs.openjdk.java.net/browse/JDK-8170188

Sergey