RFR: JDK-8287349: AArch64: Merge LDR instructions to improve C1 OSR performance [v2]

Tue May 31 07:47:24 UTC 2022

> Since MacroAssembler added merge_ldst, we can use different
> destination registers for contiguous-memory LDR instructions to improve performance.

Zhuojun Miao 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 'master' into JDK-8287349
 - use ldp explicitly
 - JDK-8287349: Merge LDR instructions to improve C1 OSR performance

-------------

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/8933/files
  - new: https://git.openjdk.java.net/jdk/pull/8933/files/b4b8a942..a024e1e4

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=8933&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=8933&range=00-01

  Stats: 3230 lines in 102 files changed: 1813 ins; 683 del; 734 mod
  Patch: https://git.openjdk.java.net/jdk/pull/8933.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/8933/head:pull/8933

PR: https://git.openjdk.java.net/jdk/pull/8933