8332032: C2: Remove ExpandSubTypeCheckAtParseTime flag

[xiaotaonan]

C2: Remove ExpandSubTypeCheckAtParseTime flag

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Progress

• Change must be properly reviewed (1 review required, with at least 1 Reviewer)
• Change must not contain extraneous whitespace
• Commit message must refer to an issue

Issue

• JDK-8332032: C2: Remove ExpandSubTypeCheckAtParseTime flag (Enhancement - P4)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk.git pull/19187/head:pull/19187
$ git checkout pull/19187

Update a local copy of the PR:
$ git checkout pull/19187
$ git pull https://git.openjdk.org/jdk.git pull/19187/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 19187

View PR using the GUI difftool:
$ git pr show -t 19187

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk/pull/19187.diff

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[openjdk]

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[mlbridge]

Webrevs

• 01: Full - Incremental (150ce858)
• 00: Full (681db95d)