RFR: 8341006: Optimize StackMapGenerator detect frames

Shaojin Wen swen at openjdk.org
Thu Sep 26 10:10:50 UTC 2024


1. Construct Frames directly without BitSet
2. Use Frame[] instead of ArrayList
3. Use EMPTY_FRAME_ARRAY for initialization. No need to allocate objects when there is no frame.

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Commit messages:
 - bug fix
 - Use Frame[] instead of List<Frame>
 - frame out of BytecodeRange
 - optimize StackMapGenerator::generate

Changes: https://git.openjdk.org/jdk/pull/21183/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=21183&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8341006
  Stats: 127 lines in 1 file changed: 59 ins; 37 del; 31 mod
  Patch: https://git.openjdk.org/jdk/pull/21183.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/21183/head:pull/21183

PR: https://git.openjdk.org/jdk/pull/21183


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