[jdk21u-dev] RFR: 8319690: [AArch64] C2 compilation hits offset_ok_for_immed: assert "c2 compiler bug"

Fri Apr 25 16:47:42 UTC 2025

Backporting JDK-8319690: [AArch64] C2 compilation hits offset_ok_for_immed: assert "c2 compiler bug". Addresses bug by removing an assert and adding test. Ran GHA Sanity Checks, local Tier 1 and 2, and new `test/hotspot/jtreg/compiler/c2/TestUnalignedAccess.java` tests. Patch is clean.

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Commit messages:
 - Backport 98f0b86641d84048949ed3da1cb14f3820b01c12

Changes: https://git.openjdk.org/jdk21u-dev/pull/1715/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1715&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8319690
  Stats: 176 lines in 2 files changed: 172 ins; 4 del; 0 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/1715.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/1715/head:pull/1715

PR: https://git.openjdk.org/jdk21u-dev/pull/1715