JDK-8370132 : C2: Enforce post-loop opts phase
  • Type: Enhancement
  • Component: hotspot
  • Sub-Component: compiler
  • Affected Version: 26
  • Priority: P4
  • Status: Open
  • Resolution: Unresolved
  • Submitted: 2025-10-17
  • Updated: 2025-10-18
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Other
tbdUnresolved
Related Reports
Relates :  
JDK-8290892 - C2: Intrinsify Reference.reachabilityFence
Relates :  
JDK-8290892 - C2: Intrinsify Reference.reachabilityFence
Description
Some optimizations (like ReachabilityFence support introduced by JDK-8290892) are allowed only when loop optimizations are over.

Introduce validation logic to enforce no loop optimizations mode and use it to guarantee that no loop optimizations happen after ReachabiltyFence nodes are eliminated.