RFR: 8256843: [PPC64] runtime/logging/RedefineClasses.java fails with assert: registers not saved on stack [v2]

[Martin Doerr]

> Method handle logging is broken in fastdebug builds. Problem is that os::current_frame() doesn't return the right frame in fastdebug builds.

Martin Doerr has updated the pull request incrementally with one additional commit since the last revision:

  New solution: Use NOINLINE for os::current_stack_pointer()

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

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/1394/files
  - new: https://git.openjdk.java.net/jdk/pull/1394/files/99f9a85b..a736e3f6

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=1394&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=1394&range=00-01

  Stats: 12 lines in 2 files changed: 8 ins; 0 del; 4 mod
  Patch: https://git.openjdk.java.net/jdk/pull/1394.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/1394/head:pull/1394

PR: https://git.openjdk.java.net/jdk/pull/1394