RFR: 8293781: RISC-V: Clarify types of calls [v5]

[Yadong Wang]

On Tue, 20 Sep 2022 02:55:40 GMT, Yanhong Zhu <yzhu at openjdk.org> wrote:

>> RISCV64 OpenJDK uses different types of calls in generated calls. It should be clarified what they are. And the PR also cleans up some out-of-date comments.
>> 
>> HotSpot tier1 tests passed.
>
> Yanhong Zhu has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains five additional commits since the last revision:
> 
>  - Merge branch 'master' of https://github.com/openjdk/jdk into JDK-8293781
>  - add relocInfo comments for far_call/far_jump
>  - modify comments
>  - fix a typo
>  - Clarify types of calls

lgtm(not a reviewer)

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Marked as reviewed by yadongwang (Author).

PR: https://git.openjdk.org/jdk/pull/10311