src/share/vm/opto/c2compiler.cpp

*** 123,135 ****
      initialize();
    }
    bool subsume_loads = SubsumeLoads;
    bool do_escape_analysis = DoEscapeAnalysis &&
      !env->jvmti_can_access_local_variables();
    while (!env->failing()) {
      // Attempt to compile while subsuming loads into machine instructions.
!     Compile C(env, this, target, entry_bci, subsume_loads, do_escape_analysis);
  
  
      // Check result and retry if appropriate.
      if (C.failure_reason() != NULL) {
        if (C.failure_reason_is(retry_no_subsuming_loads())) {
--- 123,136 ----
      initialize();
    }
    bool subsume_loads = SubsumeLoads;
    bool do_escape_analysis = DoEscapeAnalysis &&
      !env->jvmti_can_access_local_variables();
+   bool eliminate_boxing = EliminateAutoBox;
    while (!env->failing()) {
      // Attempt to compile while subsuming loads into machine instructions.
!     Compile C(env, this, target, entry_bci, subsume_loads, do_escape_analysis, eliminate_boxing);
  
  
      // Check result and retry if appropriate.
      if (C.failure_reason() != NULL) {
        if (C.failure_reason_is(retry_no_subsuming_loads())) {
*** 140,149 ****
--- 141,156 ----
        if (C.failure_reason_is(retry_no_escape_analysis())) {
          assert(do_escape_analysis, "must make progress");
          do_escape_analysis = false;
          continue;  // retry
        }
+       if (C.has_boxed_value()) {
+         // Recompile without boxing elimination regardless failure reason.
+         assert(eliminate_boxing, "must make progress");
+         eliminate_boxing = false;
+         continue;  // retry
+       }
        // Pass any other failure reason up to the ciEnv.
        // Note that serious, irreversible failures are already logged
        // on the ciEnv via env->record_method_not_compilable().
        env->record_failure(C.failure_reason());
      }