[jdk11u-dev] RFR: 8272772: Shenandoah: compiler/c2/aarch64/TestVolatilesShenandoah.java fails in 11u

[Aleksey Shipilev]

Shenandoah-specific, 11u-specific test bug. See more details in bug report.

Attention @rkennke, @adinn.

Changes:
 - `argcount` is incorrect, should be `9`, matches other configs with single option
 - `\(elided\)` should be escaped
 - `useCompressedOops` should be handled
 - 11u version still has `UseBarriersForVolatlie` block, so I had to add it for Shenandoah
 - `TestVolatilesShenandoah.java` should use itself in `@driver` statements

Additional testing:
 - [x] Affected test now passes on AArch64 11u

-------------

Commit messages:
 - 8272772: Shenandoah: compiler/c2/aarch64/TestVolatilesShenandoah.java fails in 11u

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/267/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=267&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8272772
  Stats: 30 lines in 2 files changed: 11 ins; 0 del; 19 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/267.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/267/head:pull/267

PR: https://git.openjdk.java.net/jdk11u-dev/pull/267