src/hotspot/share/ci/ciMethod.cpp

rev 53254 : 8216556: Unnecessary liveness computation with JVMTI
Reviewed-by:

*** 400,415 ****
  //
  // Which local variables are live at a specific bci?  When debugging
  // will return true for all locals in some cases to improve debug
  // information.
  MethodLivenessResult ciMethod::liveness_at_bci(int bci) {
-   MethodLivenessResult result = raw_liveness_at_bci(bci);
    if (CURRENT_ENV->should_retain_local_variables() || DeoptimizeALot) {
      // Keep all locals live for the user's edification and amusement.
!     result.at_put_range(0, result.size(), true);
!   }
    return result;
  }
  
  // ciMethod::live_local_oops_at_bci
  //
  // find all the live oops in the locals array for a particular bci
--- 400,417 ----
  //
  // Which local variables are live at a specific bci?  When debugging
  // will return true for all locals in some cases to improve debug
  // information.
  MethodLivenessResult ciMethod::liveness_at_bci(int bci) {
    if (CURRENT_ENV->should_retain_local_variables() || DeoptimizeALot) {
      // Keep all locals live for the user's edification and amusement.
!     MethodLivenessResult result(_max_locals);
!     result.set_range(0, _max_locals);
!     result.set_is_valid();
      return result;
+   }
+   return raw_liveness_at_bci(bci);
  }
  
  // ciMethod::live_local_oops_at_bci
  //
  // find all the live oops in the locals array for a particular bci