RFR: 8323095: Expand TraceOptoParse block output abbreviations

[Christian Hagedorn]

On Fri, 5 Jan 2024 23:07:12 GMT, Joshua Cao <duke at openjdk.org> wrote:

> `e` -> `exception block`
> `lphd` -> `loop head`
> 
> Also removing an unnecessary space. The successor ids have a space before them.
> 
> Examples from `java -Xcomp -XX:+TraceOptoParse -version`:
> 
> 
> Parsing block #8 at bci [33,39), successors: 9 16(exception block)  loop head

Looks good to me, too.

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Marked as reviewed by chagedorn (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/17289#pullrequestreview-1809259801