RFR: 8341481: [perf] vframeStreamCommon constructor may be optimized [v2]

[Vladimir Ivanov]

> Optimize constructor to skip extra copy for registers. The tier1 tests are OK. The Specjvm2008 benchmark reports ~1% improvement.

Vladimir Ivanov has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains three additional commits since the last revision:

 - Merge branch 'openjdk:master' into 8341481
 - 8341481: [perf] vframeStreamCommon constructor may be optimized
 - 8341481 [Perf] vframeStreamCommon constructor may be optimized

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Changes:
  - all: https://git.openjdk.org/jdk/pull/22173/files
  - new: https://git.openjdk.org/jdk/pull/22173/files/55466835..ba234c59

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=22173&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=22173&range=00-01

  Stats: 530558 lines in 8910 files changed: 288054 ins; 192740 del; 49764 mod
  Patch: https://git.openjdk.org/jdk/pull/22173.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22173/head:pull/22173

PR: https://git.openjdk.org/jdk/pull/22173