JDK-8341293 : Split field loads through Nested Phis
  • Type: Enhancement
  • Component: hotspot
  • Sub-Component: compiler
  • Affected Version: 24
  • Priority: P4
  • Status: Open
  • Resolution: Unresolved
  • OS: generic
  • CPU: generic
  • Submitted: 2024-10-01
  • Updated: 2025-04-25
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Other
tbdUnresolved
Related Reports
Relates :  
JDK-8287061 - Support for rematerializing scalar replaced objects participating in allocation merges
Description
As an extension of the work done as part of https://bugs.openjdk.org/browse/JDK-8287061, https://github.com/openjdk/jdk/pull/12897, split the field loads (AddP -> Load*) with nested phi parent nodes to enable more scalar replacements, thereby reducing memory allocation.
Comments
A pull request was submitted for review. Branch: master URL: https://git.openjdk.org/jdk/pull/21270 Date: 2024-09-30 16:23:05 +0000
19-11-2024
[~thartmann] backlog bugs are resolved. I submitted PR https://github.com/openjdk/jdk/pull/21270
19-11-2024
JDK-8287061 still has a bug tail, see JDK-8335977. Let's fix this first before further extending the change.
01-10-2024