src/share/vm/ci/ciEnv.cpp

rev 5968 : 8031320: Use Intel RTM instructions for locks
Summary: Use RTM for inflated locks and stack locks.
Reviewed-by: iveresov, twisti, roland, dcubed

*** 924,934 ****
                              ExceptionHandlerTable* handler_table,
                              ImplicitExceptionTable* inc_table,
                              AbstractCompiler* compiler,
                              int comp_level,
                              bool has_unsafe_access,
!                             bool has_wide_vectors) {
    VM_ENTRY_MARK;
    nmethod* nm = NULL;
    {
      // To prevent compile queue updates.
      MutexLocker locker(MethodCompileQueue_lock, THREAD);
--- 924,935 ----
                              ExceptionHandlerTable* handler_table,
                              ImplicitExceptionTable* inc_table,
                              AbstractCompiler* compiler,
                              int comp_level,
                              bool has_unsafe_access,
!                             bool has_wide_vectors,
!                             RTMState  rtm_state) {
    VM_ENTRY_MARK;
    nmethod* nm = NULL;
    {
      // To prevent compile queue updates.
      MutexLocker locker(MethodCompileQueue_lock, THREAD);
*** 971,980 ****
--- 972,990 ----
        validate_compile_task_dependencies(target);
      }
  
      methodHandle method(THREAD, target->get_Method());
  
+ #if INCLUDE_RTM_OPT
+     if (!failing() && (rtm_state != NoRTM) &&
+         (method()->method_data() != NULL) &&
+         (method()->method_data()->rtm_state() != rtm_state)) {
+       // Preemptive decompile if rtm state was changed.
+       record_failure("RTM state change invalidated rtm code");
+     }
+ #endif
+ 
      if (failing()) {
        // While not a true deoptimization, it is a preemptive decompile.
        MethodData* mdo = method()->method_data();
        if (mdo != NULL) {
          mdo->inc_decompile_count();
*** 997,1007 ****
                                 orig_pc_offset,
                                 debug_info(), dependencies(), code_buffer,
                                 frame_words, oop_map_set,
                                 handler_table, inc_table,
                                 compiler, comp_level);
! 
      // Free codeBlobs
      code_buffer->free_blob();
  
      if (nm != NULL) {
        nm->set_has_unsafe_access(has_unsafe_access);
--- 1007,1019 ----
                                 orig_pc_offset,
                                 debug_info(), dependencies(), code_buffer,
                                 frame_words, oop_map_set,
                                 handler_table, inc_table,
                                 compiler, comp_level);
! #if INCLUDE_RTM_OPT
!     nm->set_rtm_state(rtm_state);
! #endif
      // Free codeBlobs
      code_buffer->free_blob();
  
      if (nm != NULL) {
        nm->set_has_unsafe_access(has_unsafe_access);