Exemple #1
0
//-----------------------------profile_switch_case-----------------------------
void Parse::profile_switch_case(int table_index) {
  if (!method_data_update()) return;

  ciMethodData* md = method()->method_data();
  assert(md != NULL, "expected valid ciMethodData");

  ciProfileData* data = md->bci_to_data(bci());
  assert(data->is_MultiBranchData(), "need MultiBranchData for switch case");
  if (table_index >= 0) {
    increment_md_counter_at(md, data, MultiBranchData::case_count_offset(table_index));
  } else {
    increment_md_counter_at(md, data, MultiBranchData::default_count_offset());
  }
}
Exemple #2
0
//---------------------------------profile_ret---------------------------------
void Parse::profile_ret(int target_bci) {
  if (!method_data_update()) return;

  // Skip if we aren't tracking ret targets
  if (TypeProfileWidth < 1) return;

  ciMethodData* md = method()->method_data();
  assert(md != NULL, "expected valid ciMethodData");
  ciProfileData* data = md->bci_to_data(bci());
  assert(data->is_RetData(), "need RetData for ret");
  ciRetData* ret_data = (ciRetData*)data->as_RetData();

  // Look for the target_bci is already in the table
  uint row;
  bool table_full = true;
  for (row = 0; row < ret_data->row_limit(); row++) {
    int key = ret_data->bci(row);
    table_full &= (key != RetData::no_bci);
    if (key == target_bci) break;
  }

  if (row >= ret_data->row_limit()) {
    // The target_bci was not found in the table.
    if (!table_full) {
      // XXX: Make slow call to update RetData
    }
    return;
  }

  // the target_bci is already in the table
  increment_md_counter_at(md, data, RetData::bci_count_offset(row));
}
Exemple #3
0
//-----------------------------profile_receiver_type---------------------------
void Parse::profile_receiver_type(Node* receiver) {
  assert(method_data_update(), "must be generating profile code");

  ciMethodData* md = method()->method_data();
  assert(md != NULL, "expected valid ciMethodData");
  ciProfileData* data = md->bci_to_data(bci());
  assert(data->is_ReceiverTypeData(), "need ReceiverTypeData here");

  // Skip if we aren't tracking receivers
  if (TypeProfileWidth < 1) {
    increment_md_counter_at(md, data, CounterData::count_offset());
    return;
  }
  ciReceiverTypeData* rdata = (ciReceiverTypeData*)data->as_ReceiverTypeData();

  Node* method_data = method_data_addressing(md, rdata, in_ByteSize(0));

  // Using an adr_type of TypePtr::BOTTOM to work around anti-dep problems.
  // A better solution might be to use TypeRawPtr::BOTTOM with RC_NARROW_MEM.
  make_runtime_call(RC_LEAF, OptoRuntime::profile_receiver_type_Type(),
                    CAST_FROM_FN_PTR(address,
                                     OptoRuntime::profile_receiver_type_C),
                    "profile_receiver_type_C",
                    TypePtr::BOTTOM,
                    method_data, receiver);
}
Exemple #4
0
//------------------------------profile_generic_call---------------------------
void Parse::profile_generic_call() {
  assert(method_data_update(), "must be generating profile code");

  ciMethodData* md = method()->method_data();
  assert(md != NULL, "expected valid ciMethodData");
  ciProfileData* data = md->bci_to_data(bci());
  assert(data->is_CounterData(), "need CounterData for not taken branch");
  increment_md_counter_at(md, data, CounterData::count_offset());
}
//--------------------------profile_not_taken_branch---------------------------
void Parse::profile_not_taken_branch() {
  if (!method_data_update()) return;

  ciMethodData* md = method()->method_data();
  assert(md != NULL, "expected valid ciMethodData");
  ciProfileData* data = md->bci_to_data(bci());
  assert(data->is_BranchData(), "need BranchData for not taken branch");
  increment_md_counter_at(md, data, BranchData::not_taken_offset());
}
Exemple #6
0
//----------------------------profile_taken_branch-----------------------------
void Parse::profile_taken_branch(int target_bci, bool force_update) {
  // This is a potential osr_site if we have a backedge.
  int cur_bci = bci();
  bool osr_site =
    (target_bci <= cur_bci) && count_invocations() && UseOnStackReplacement;

  // If we are going to OSR, restart at the target bytecode.
  set_bci(target_bci);

  // To do: factor out the the limit calculations below. These duplicate
  // the similar limit calculations in the interpreter.

  if (method_data_update() || force_update) {
    ciMethodData* md = method()->method_data();
    assert(md != NULL, "expected valid ciMethodData");
    ciProfileData* data = md->bci_to_data(cur_bci);
    assert(data->is_JumpData(), "need JumpData for taken branch");
    increment_md_counter_at(md, data, JumpData::taken_offset());
  }

  // In the new tiered system this is all we need to do. In the old
  // (c2 based) tiered sytem we must do the code below.
#ifndef TIERED
  if (method_data_update()) {
    ciMethodData* md = method()->method_data();
    if (osr_site) {
      ciProfileData* data = md->bci_to_data(cur_bci);
      int limit = (CompileThreshold
                   * (OnStackReplacePercentage - InterpreterProfilePercentage)) / 100;
      test_for_osr_md_counter_at(md, data, JumpData::taken_offset(), limit);
    }
  } else {
    // With method data update off, use the invocation counter to trigger an
    // OSR compilation, as done in the interpreter.
    if (osr_site) {
      int limit = (CompileThreshold * OnStackReplacePercentage) / 100;
      increment_and_test_invocation_counter(limit);
    }
  }
#endif // TIERED

  // Restore the original bytecode.
  set_bci(cur_bci);
}