JDK-8341767 : [lworld] JIT support for nullable, atomic, flat arrays
  • Type: Enhancement
  • Component: hotspot
  • Sub-Component: compiler
  • Affected Version: repo-valhalla
  • Priority: P4
  • Status: Resolved
  • Resolution: Fixed
  • Submitted: 2024-10-08
  • Updated: 2025-10-15
  • Resolved: 2025-03-14
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Other
repo-valhallaFixed
Related Reports
Blocks :  
JDK-8341759 - [lworld] JIT support for nullable, atomic, flat fields
Blocks :  
JDK-8345995 - [lworld] Flat arrays need to be redesigned to support new flat layouts
Blocks :  
JDK-8341765 - [lworld] C1 aaload/aastore for new flat arrays on x64 and aarch64
Blocks :  
JDK-8350630 - [lworld] ObjBufferAllocator::initialize fails with assert(has_klass_gap()) failed: precondition
Blocks :  
JDK-8341764 - Interpreter aaload/aastore for new flat arrays on x64 and aarch64
Blocks :  
JDK-8341757 - Field layout computation allowing atomic and nullable flattening
Blocks :  
JDK-8351483 - [lworld] Field offset verification fails
Blocks :  
JDK-8341762 - Redesign flat arrays to support new flat layouts
Blocks :  
JDK-8350763 - [lworld] InlineKlass::flat_array_klass hits assert(has_non_atomic_layout()) failed: Must be
Causes :  
JDK-8355317 - [lworld] C2 Runtime load_unknown_inline should not return null-free type
Duplicate :  
JDK-8345681 - [lworld] C2: TypeAryPtr::is_null_free() does not work for any null-free array
Duplicate :  
JDK-8341765 - [lworld] C1 aaload/aastore for new flat arrays on x64 and aarch64
Relates :  
JDK-8265122 - [lworld] Implement a fast path for flat / null-free array allocation in C1
Relates :  
JDK-8350865 - [lworld] Follow-up work from adding support for nullable, flat, atomic arrays / fields
Description
C2 aaload/aastore for new flat arrays on x64 and aarch64
Comments
A pull request was submitted for review. Branch: lworld URL: https://git.openjdk.org/valhalla/pull/1397 Date: 2025-03-13 07:29:43 +0000
14-03-2025
Also revisit the commented out tests here: https://github.com/openjdk/valhalla/pull/1315/commits/6e4729e0fc9f61dacaaeaee9584982847d9be9e3
15-01-2025