Inlining of Virtual Methods in a Java (TM) VM JIT

or, sleazy virtual inlining

david.detlefs@east.sun.com

• Sun Microsystems, Inc.
  • Sun Laboratories
    • Sun Labs East
      • Java Topics Group
        • Dave Detlefs, Ole Agesen

  • Solaris Software
    • Java Technology Group

Outline

• Short history of the Exact VM project.

• Basic inlining in our JIT. (results)

• Inlining of virtuals.

• Guarded inlining: the method test. (results)

• Direct inlining of virtuals (results)

• Conclusions