RFR: 8361730: The CodeBuilder.trying(BlockCodeBuilder,CatchBuilder) method generates corrupted bytecode in certain cases

[Chen Liang]

Explicitly document that BlockCodeBuilder expects control flow to continue after it merges back to the parent block, so failure to do that by the users can lead to malformed code. This is better than introducing complex and costly analysis.

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Commit messages:
 - 8361730: The CodeBuilder.trying(BlockCodeBuilder,CatchBuilder) method generates corrupted bytecode in certain cases

Changes: https://git.openjdk.org/jdk/pull/26602/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=26602&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8361730
  Stats: 5 lines in 1 file changed: 5 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/26602.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/26602/head:pull/26602

PR: https://git.openjdk.org/jdk/pull/26602