JDK-8341759 : [lworld] JIT support for nullable, atomic, flat fields
  • Type: Enhancement
  • Component: hotspot
  • Sub-Component: compiler
  • Affected Version: repo-valhalla
  • Priority: P2
  • Status: Resolved
  • Resolution: Fixed
  • Submitted: 2024-10-08
  • Updated: 2025-10-15
  • Resolved: 2025-01-30
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Other
repo-valhallaFixed
Related Reports
Blocks :  
JDK-8341767 - [lworld] JIT support for nullable, atomic, flat arrays
Blocks :  
JDK-8346702 - [lworld] ShouldNotReachHere in FieldLayout::remove_null_marker()
Blocks :  
JDK-8341757 - Field layout computation allowing atomic and nullable flattening
Causes :  
JDK-8364191 - [lworld] Accesses to atomic flat fields prevent scalar replacement
Causes :  
JDK-8353195 - [lworld] Several failures with -XX:+UseNullableValueFlattening
Causes :  
JDK-8355299 - [lworld] C2 compilation fails with "unexpected yanked node"
Causes :  
JDK-8353212 - [lworld] TestFlatArrayAliasesCardMark.java crashes when run with -XX:+UseAtomicValueFlattening
Causes :  
JDK-8353432 - [lworld] Deoptimization needs to handle nullable, flat fields in non-value class holders
Causes :  
JDK-8353202 - [lworld] TestArrays.java crashes with -XX:+UseNullableValueFlattening
Duplicate :  
JDK-8341758 - [lworld] C1 getfield/putfield for new flat fields on x64 and aarch64
Duplicate :  
JDK-8331500 - [lworld] Implement null markers support in C2
Relates :  
JDK-8350865 - [lworld] Follow-up work from adding support for nullable, flat, atomic arrays / fields
Relates :  
JDK-8353715 - [lworld] TestArrays::test133 crashes with -XX:+UseNullableValueFlattening
Description
C2 getfield/putfield for new flat fields on x64 and aarch64
Comments
A pull request was submitted for review. Branch: lworld URL: https://git.openjdk.org/valhalla/pull/1318 Date: 2024-12-16 13:34:44 +0000
30-01-2025