JDK-8257772 : Vectorizing clear memory operation using AVX-512 masked operations
- Type: Enhancement
- Component: hotspot
- Sub-Component: compiler
- Affected Version: 16
- Priority: P3
- Status: Resolved
- Resolution: Fixed
- OS: generic
- CPU: x86_64
- Submitted: 2020-12-04
- Updated: 2024-03-15
- Resolved: 2020-12-17
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| JDK 17 |
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17 b03Fixed  |
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Description
Accelerate clear memory operation for system initialization of newly allocated objects. Currently for constant number of heap words less than InitArrayShortSize C2 compiler emits initialization sequence using 8 byte stores. This can accelerated using vector store operations.
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