RFR: 8267235: [macos_aarch64] InterpreterRuntime::throw_pending_exception messing up LR results in crash

[Vladimir Kempik]

Please review this patch for call_VM_Base routine.
it's expected there the LR is callee-saved register, but it's not on aarch64.
when InterpreterRuntime::throw_pending_exception is tail-call optimized,
the last subroutine before return is pthread_jit_write_protect_np which pac-sign LR.
It can only be reproduced in macos 11.4beta (just run J2Ddemo ) but in fact affects every aarch64 build.

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Commit messages:
 - JDK-8267235: [macos_aarch64] InterpreterRuntime::throw_pending_exception messing up LR results in crash

Changes: https://git.openjdk.java.net/jdk/pull/4115/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=4115&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8267235
  Stats: 7 lines in 1 file changed: 7 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/4115.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/4115/head:pull/4115

PR: https://git.openjdk.java.net/jdk/pull/4115