src/share/vm/runtime/deoptimization.hpp

rev 8006 : 8073480: C2 should optimize explicit range checks
Summary: explicit range checks should be recognized by C2
Reviewed-by:

*** 61,70 ****
--- 61,71 ----
      Reason_loop_limit_check,      // compiler generated loop limits check failed
      Reason_speculate_class_check, // saw unexpected object class from type speculation
      Reason_speculate_null_check,  // saw unexpected null from type speculation
      Reason_rtm_state_change,      // rtm state change detected
      Reason_unstable_if,           // a branch predicted always false was taken
+     Reason_unstable_fused_if,     // fused two ifs that had each one untaken branch. One is now taken.
  
      // Reason_tenured is counted separately, add normal counted Reasons above.
      // Related to MethodData::_trap_hist_limit where Reason_tenured isn't included
      Reason_tenured,               // age of the code has reached the limit
      Reason_LIMIT,
*** 324,333 ****
--- 325,336 ----
        return Reason_class_check;
      else if (reason == Reason_speculate_null_check)
        return Reason_null_check;
      else if (reason == Reason_unstable_if)
        return Reason_intrinsic;
+     else if (reason == Reason_unstable_fused_if)
+       return Reason_range_check;
      else
        return Reason_none;
    }
  
    static bool reason_is_speculate(int reason) {