[riscv-port-jdk17u:riscv-port] RFR: 8301313: RISC-V: C2: assert(false) failed: bad AD file due to missing match rule

[Dingli Zhang]

Please review this backport to riscv-port-jdk17u.
Backport of [JDK-8299847](https://bugs.openjdk.org/browse/JDK-8299847). Applies cleanly.

Testing:
- Tier1 passed without new failure on unmacthed (release).

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Commit messages:
 - 8299847: RISC-V: Improve PrintOptoAssembly output of CMoveI/L nodes

Changes: https://git.openjdk.org/riscv-port-jdk17u/pull/18/files
 Webrev: https://webrevs.openjdk.org/?repo=riscv-port-jdk17u&pr=18&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8301313
  Stats: 41 lines in 1 file changed: 1 ins; 12 del; 28 mod
  Patch: https://git.openjdk.org/riscv-port-jdk17u/pull/18.diff
  Fetch: git fetch https://git.openjdk.org/riscv-port-jdk17u.git pull/18/head:pull/18

PR: https://git.openjdk.org/riscv-port-jdk17u/pull/18