RFR: JDK-8313689 : C2: compiler/c2/irTests/scalarReplacement/AllocationMergesTests.java fails intermittently with -XX:-TieredCompilation

Mon Aug 21 18:29:26 UTC 2023

Please see the JBS work item for more context.

These adjustments are necessary to make the IR graph shape more stable across executions of the tests. Also, tries to force inline of some important methods.

Tested locally on Linux x64 and Mac AArch64.

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Commit messages:
 - Improvements to RAM IR Tests

Changes: https://git.openjdk.org/jdk/pull/15367/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=15367&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8313689
  Stats: 11 lines in 1 file changed: 7 ins; 0 del; 4 mod
  Patch: https://git.openjdk.org/jdk/pull/15367.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/15367/head:pull/15367

PR: https://git.openjdk.org/jdk/pull/15367