JDK-8365207 : C2: Optimize integral bit compression and expansion value transforms using knownbits
  • Type: Enhancement
  • Component: hotspot
  • Sub-Component: compiler
  • Affected Version: 26
  • Priority: P4
  • Status: Open
  • Resolution: Unresolved
  • OS: generic
  • CPU: generic
  • Submitted: 2025-08-11
  • Updated: 2025-09-12
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Other
tbdUnresolved
Related Reports
Relates :  
JDK-8315066 - Add unsigned bounds and known bits to TypeInt/Long
Description
There is an opportunity to optimize bit compression and expansion value transforms using knownbits information based on following pseudo-algoritm.
https://github.com/jatin-bhateja/external_staging/blob/main/Code/java/knownBits_DFA/bit_compress_expand_KnownBits.java