RFR: JDK-8326974: ODR violation in macroAssembler_aarch64.cpp [v3]

[Andrew Haley]

> This is a slightly different patch from the one suggested by the bug reporter. It doesn't make any sense to export those classes globally, so I've given them internal linkage.

Andrew Haley has updated the pull request incrementally with one additional commit since the last revision:

  JDK-8326974: ODR violation in macroAssembler_aarch64.cpp

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Changes:
  - all: https://git.openjdk.org/jdk/pull/18056/files
  - new: https://git.openjdk.org/jdk/pull/18056/files/7f38d070..b326b902

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=18056&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=18056&range=01-02

  Stats: 1 line in 1 file changed: 0 ins; 1 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/18056.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/18056/head:pull/18056

PR: https://git.openjdk.org/jdk/pull/18056