RFR: 8299847: RISC-V: Incorrect branch condition code in PrintOptoAssembly output [v2]

[Fei Yang]

> Witnessed some incorrect branch condition code in PrintOptoAssembly output on RISC-V. While this won't affect release build, we should fix this for debug build. This also bumps the BRANCH_COST a little bit as I think control transfer instructions should have higher cost than regular integer computational instructions.
> 
> Testing: Tier1 tested on HiFive Unmatched board.

Fei Yang has updated the pull request incrementally with one additional commit since the last revision:

  Fix

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Changes:
  - all: https://git.openjdk.org/jdk/pull/11919/files
  - new: https://git.openjdk.org/jdk/pull/11919/files/e7ae82f2..f28dbcbd

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=11919&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=11919&range=00-01

  Stats: 18 lines in 1 file changed: 0 ins; 12 del; 6 mod
  Patch: https://git.openjdk.org/jdk/pull/11919.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/11919/head:pull/11919

PR: https://git.openjdk.org/jdk/pull/11919