RFR: 8322781: C1: Debug build crash in GraphBuilder::vmap() when print stats [v2]

[Denghui Dong]

> Hi,
> 
> Could I have a review of this fix patch that fixes a crash problem in the debug build when -XX:+PrintValueNumbering -XX:+Verbose -XX:-UseLocalValueNumbering
> 
> Thanks

Denghui Dong has updated the pull request incrementally with one additional commit since the last revision:

  add test

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/17205/files
  - new: https://git.openjdk.org/jdk/pull/17205/files/49f90f41..3d5280ce

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=17205&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=17205&range=00-01

  Stats: 11 lines in 1 file changed: 11 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/17205.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/17205/head:pull/17205

PR: https://git.openjdk.org/jdk/pull/17205