RFR: 8290965: PPC64: Implement post-call NOPs

[Andrew Haley]

On 12/20/23 20:36, Richard Reingruber wrote:
> | test/jdk/java/lang/Thread/virtual/stress/Skynet.java | ppc64le   | x86_64    |
> |------------------------------------------------------|-----------|-----------|
> | PCN lookup success                                   | 306955525 | 247185016 |
> | PCN lookup failure                                   |    500975 |    421098 |
> | PCN decode success   (C2)                            | 306951893 | 247181691 |
> | PCN decode failure                                   |      3168 |        59 |
> | PCN patch success                                    |      2080 |      2662 |
> | PCN patch cb offset failure                          |         0 |         0 |
> | PCN patch oopmap slot failure                        |         0 |         0 |

These data are really interesting. How did you gather them? Thanks.