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Type: Enhancement
Resolution: Fixed
Priority: P3
Fix Version/s: 26
Affects Version/s: 26
Component/s: hotspot
Labels:
- c1

Subcomponent:
compiler
Resolved In Build:
b19
CPU:

generic
OS:

generic

In C1, the experimental flag AlwaysAtomicAccesses treats accesses to all fields as if they were volatile fields. This is correct but excessive: we only need single-copy atomicity to satisfyAlwaysAtomicAccesses.

blocks

JDK-8365147 AArch64: Replace DMB + LD + DMB with LDAR for C1 volatile field loads

Open

relates to

JDK-8033380 Experimental VM flag to enforce access atomicity

Resolved

links to

Commit(master) openjdk/jdk/aed9485b

Review(master) openjdk/jdk/27432

Assignee:: Andrew Haley

Reporter:: Andrew Haley

Votes:: 0 Vote for this issue

Watchers:: 4 Start watching this issue

Created:: 2025-09-22 08:30

Updated:: 4 days ago 14:59

Resolved:: 2025-10-07 03:10

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