[riscv-port-jdk17u:riscv-port] RFR: 8294086: RISC-V: Cleanup InstructionMark usages in the backend

[Fei Yang]

On Wed, 22 Mar 2023 10:16:57 GMT, Xiaolin Zheng <xlinzheng at openjdk.org> wrote:

> Backport one RVC-related patch (3rd, 8 in total). The remaining patches seem to be linear and cannot be submitted concurrently.
> 
> Tested along with remaining RVC patches, hotspot tier1~4 with fastdebug build.

Looks good.

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Marked as reviewed by fyang (Committer).

PR Review: https://git.openjdk.org/riscv-port-jdk17u/pull/23#pullrequestreview-1354148000