RFR: 8293011: riscv: Duplicated stubs to interpreter for static calls [v2]

[Dingli Zhang]

> Follow up [JDK-8280481](https://bugs.openjdk.org/browse/JDK-8280481), it provides duplicated stubs to interpreter for static calls.
> 
> ## Testing:
> 
> - hotspot/jdk tier1 on unmatched board
> - hotspot/jtreg/compiler/sharedstubs/SharedStubToInterpTest.java on qemu
> 
> 
> ## Results
> #### Results from [Renaissance 0.14.0](https://github.com/renaissance-benchmarks/renaissance/releases/tag/v0.14.0)
> Note: 'Nmethods with shared stubs' is the total number of nmethods counted during benchmark's run. 'Final # of nmethods' is a number of nmethods in CodeCache when JVM exited.
> 
> Because of the current hardware performance limitations, I selected a few cases to test and reduced the number of iterations using `-r 10`. The data is sufficient to reflect the effect of the optimization.
> 
> - riscv64
> 
> +------------------+-------------+----------------------------+---------------------+
> |    Benchmark     | Saved bytes | Nmethods with shared stubs | Final # of nmethods |
> +------------------+-------------+----------------------------+---------------------+
> | future-genetic   |       47824 |                       1278 |                1811 |
> | scrabble         |       30616 |                        738 |                1605 |
> | fj-kmeans        |       23320 |                        633 |                1386 |
> | par-mnemonics    |        2840 |                        621 |                1398 |
> | scala-kmeans     |       19544 |                        381 |                1365 |
> +------------------+-------------+----------------------------+---------------------+

Dingli Zhang has updated the pull request incrementally with one additional commit since the last revision:

  Add missing copyright

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/10057/files
  - new: https://git.openjdk.org/jdk/pull/10057/files/8abbf93d..b5000dcf

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=10057&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=10057&range=00-01

  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/10057.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/10057/head:pull/10057

PR: https://git.openjdk.org/jdk/pull/10057