RFR: 8256359: AArch64: runtime/ReservedStack/ReservedStackTestCompiler.java fails

[Andrew Haley]

The problem is that the caller's expression SP is restored before throw_delayed_StackOverflowError(). This is wrong: it leaves ESP pointing into the caller's frame, and this triggers an assert failure. The fix here delays updating ESP until we know we're not going to call throw_delayed_StackOverflowError(). This makes the logic the same as x86.

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Commit messages:
 - 8256359: AArch64: runtime/ReservedStack/ReservedStackTestCompiler.java fails

Changes: https://git.openjdk.java.net/jdk/pull/1435/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=1435&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8256359
  Stats: 8 lines in 2 files changed: 5 ins; 1 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk/pull/1435.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/1435/head:pull/1435

PR: https://git.openjdk.java.net/jdk/pull/1435