RFR: 8358694: VM asserts if CodeCacheSegmentSize is not a power of 2 [v6]

[Amit Kumar]

> Makes sure that JVM exits gracefully when `CodeCacheSegmentSize` is not a power of 2.

Amit Kumar has updated the pull request incrementally with one additional commit since the last revision:

  updates testcase

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Changes:
  - all: https://git.openjdk.org/jdk/pull/25708/files
  - new: https://git.openjdk.org/jdk/pull/25708/files/24511b00..520e3512

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=25708&range=05
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=25708&range=04-05

  Stats: 24 lines in 1 file changed: 20 ins; 0 del; 4 mod
  Patch: https://git.openjdk.org/jdk/pull/25708.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/25708/head:pull/25708

PR: https://git.openjdk.org/jdk/pull/25708