JVMState* DirectCallGenerator::generate(JVMState* jvms, Parse* parent_parser) {
  GraphKit kit(jvms);
  bool is_static = method()->is_static();
  address target = is_static ? SharedRuntime::get_resolve_static_call_stub()
                             : SharedRuntime::get_resolve_opt_virtual_call_stub();

  if (kit.C->log() != NULL) {
    kit.C->log()->elem("direct_call bci='%d'", jvms->bci());
  }

  CallStaticJavaNode *call = new (kit.C) CallStaticJavaNode(kit.C, tf(), target, method(), kit.bci());
  _call_node = call;  // Save the call node in case we need it later
  if (!is_static) {
    // Make an explicit receiver null_check as part of this call.
    // Since we share a map with the caller, his JVMS gets adjusted.
    kit.null_check_receiver_before_call(method());
    if (kit.stopped()) {
      // And dump it back to the caller, decorated with any exceptions:
      return kit.transfer_exceptions_into_jvms();
    }
    // Mark the call node as virtual, sort of:
    call->set_optimized_virtual(true);
    if (method()->is_method_handle_intrinsic() ||
        method()->is_compiled_lambda_form()) {
      call->set_method_handle_invoke(true);
    }
  }
  kit.set_arguments_for_java_call(call);
  kit.set_edges_for_java_call(call, false, _separate_io_proj);
  Node* ret = kit.set_results_for_java_call(call, _separate_io_proj);
  kit.push_node(method()->return_type()->basic_type(), ret);
  return kit.transfer_exceptions_into_jvms();
}
示例#2
0
JVMState* DynamicCallGenerator::generate(JVMState* jvms) {
  GraphKit kit(jvms);
  Compile* C = kit.C;
  PhaseGVN& gvn = kit.gvn();

  if (C->log() != NULL) {
    C->log()->elem("dynamic_call bci='%d'", jvms->bci());
  }

  // Get the constant pool cache from the caller class.
  ciMethod* caller_method = jvms->method();
  ciBytecodeStream str(caller_method);
  str.force_bci(jvms->bci());  // Set the stream to the invokedynamic bci.
  assert(str.cur_bc() == Bytecodes::_invokedynamic, "wrong place to issue a dynamic call!");
  ciCPCache* cpcache = str.get_cpcache();

  // Get the offset of the CallSite from the constant pool cache
  // pointer.
  int index = str.get_method_index();
  size_t call_site_offset = cpcache->get_f1_offset(index);

  // Load the CallSite object from the constant pool cache.
  const TypeOopPtr* cpcache_type   = TypeOopPtr::make_from_constant(cpcache);  // returns TypeAryPtr of type T_OBJECT
  const TypeOopPtr* call_site_type = TypeOopPtr::make_from_klass(C->env()->CallSite_klass());
  Node* cpcache_adr   = kit.makecon(cpcache_type);
  Node* call_site_adr = kit.basic_plus_adr(cpcache_adr, call_site_offset);
  // The oops in the constant pool cache are not compressed; load then as raw pointers.
  Node* call_site     = kit.make_load(kit.control(), call_site_adr, call_site_type, T_ADDRESS, Compile::AliasIdxRaw);

  // Load the target MethodHandle from the CallSite object.
  const TypeOopPtr* target_type = TypeOopPtr::make_from_klass(C->env()->MethodHandle_klass());
  Node* target_mh_adr = kit.basic_plus_adr(call_site, java_lang_invoke_CallSite::target_offset_in_bytes());
  Node* target_mh     = kit.make_load(kit.control(), target_mh_adr, target_type, T_OBJECT);

  address resolve_stub = SharedRuntime::get_resolve_opt_virtual_call_stub();

  CallStaticJavaNode* call = new (C, tf()->domain()->cnt()) CallStaticJavaNode(tf(), resolve_stub, method(), kit.bci());
  // invokedynamic is treated as an optimized invokevirtual.
  call->set_optimized_virtual(true);
  // Take extra care (in the presence of argument motion) not to trash the SP:
  call->set_method_handle_invoke(true);

  // Pass the target MethodHandle as first argument and shift the
  // other arguments.
  call->init_req(0 + TypeFunc::Parms, target_mh);
  uint nargs = call->method()->arg_size();
  for (uint i = 1; i < nargs; i++) {
    Node* arg = kit.argument(i - 1);
    call->init_req(i + TypeFunc::Parms, arg);
  }

  kit.set_edges_for_java_call(call);
  Node* ret = kit.set_results_for_java_call(call);
  kit.push_node(method()->return_type()->basic_type(), ret);
  return kit.transfer_exceptions_into_jvms();
}
JVMState* DirectCallGenerator::generate(JVMState* jvms) {
  GraphKit kit(jvms);
  kit.C->print_inlining_update(this);
  bool is_static = method()->is_static();
  address target = is_static ? SharedRuntime::get_resolve_static_call_stub()
                             : SharedRuntime::get_resolve_opt_virtual_call_stub();

  if (kit.C->log() != NULL) {
    kit.C->log()->elem("direct_call bci='%d'", jvms->bci());
  }

  CallStaticJavaNode *call = new CallStaticJavaNode(kit.C, tf(), target, method(), kit.bci());
  if (is_inlined_mh_linker(jvms, method())) {
    // To be able to issue a direct call and skip a call to MH.linkTo*/invokeBasic adapter,
    // additional information about the method being invoked should be attached
    // to the call site to make resolution logic work
    // (see SharedRuntime::resolve_static_call_C).
    call->set_override_symbolic_info(true);
  }
  _call_node = call;  // Save the call node in case we need it later
  if (!is_static) {
    // Make an explicit receiver null_check as part of this call.
    // Since we share a map with the caller, his JVMS gets adjusted.
    kit.null_check_receiver_before_call(method());
    if (kit.stopped()) {
      // And dump it back to the caller, decorated with any exceptions:
      return kit.transfer_exceptions_into_jvms();
    }
    // Mark the call node as virtual, sort of:
    call->set_optimized_virtual(true);
    if (method()->is_method_handle_intrinsic() ||
        method()->is_compiled_lambda_form()) {
      call->set_method_handle_invoke(true);
    }
  }
  kit.set_arguments_for_java_call(call);
  kit.set_edges_for_java_call(call, false, _separate_io_proj);
  Node* ret = kit.set_results_for_java_call(call, _separate_io_proj);
  kit.push_node(method()->return_type()->basic_type(), ret);
  return kit.transfer_exceptions_into_jvms();
}