RFR: 8371789: C2: More explicit dump results for TypePtr

Thu Nov 13 12:05:20 UTC 2025

Hi,

This patch tries to clear up the dumped information of `TypePtr` and its subclasses. It makes it immediately clear the states of the `Type` object without us having to look into the implementation of `dump2`, for example, to know that the absence of `:NotNull` implies that it is a `BotPTR`.

Please take a look and kindly review, thanks a lot.

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Commit messages:
 - whitespace
 - fix IR framework
 - clean up printing of TypePtr and subclasses

Changes: https://git.openjdk.org/jdk/pull/28292/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=28292&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8371789
  Stats: 232 lines in 3 files changed: 64 ins; 121 del; 47 mod
  Patch: https://git.openjdk.org/jdk/pull/28292.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/28292/head:pull/28292

PR: https://git.openjdk.org/jdk/pull/28292