Merge

src/share/vm/c1/c1_LIRGenerator.cpp

@@ -3053,7 +3053,11 @@ void LIRGenerator::increment_event_counter_impl(CodeEmitInfo* info,
   int offset = -1;
   LIR_Opr counter_holder;
   if (level == CompLevel_limited_profile) {
-    address counters_adr = method->ensure_method_counters();
+    MethodCounters* counters_adr = method->ensure_method_counters();
+    if (counters_adr == NULL) {
+      bailout("method counters allocation failed");
+      return;
+    }
     counter_holder = new_pointer_register();
     __ move(LIR_OprFact::intptrConst(counters_adr), counter_holder);
     offset = in_bytes(backedge ? MethodCounters::backedge_counter_offset() :

src/share/vm/ci/ciEnv.cpp

@@ -1154,9 +1154,12 @@ ciInstance* ciEnv::unloaded_ciinstance() {
   GUARDED_VM_ENTRY(return _factory->get_unloaded_object_constant();)
 }
 
-void ciEnv::dump_replay_data(outputStream* out) {
-  VM_ENTRY_MARK;
-  MutexLocker ml(Compile_lock);
+// ------------------------------------------------------------------
+// ciEnv::dump_replay_data*
+
+// Don't change thread state and acquire any locks.
+// Safe to call from VM error reporter.
+void ciEnv::dump_replay_data_unsafe(outputStream* out) {
   ResourceMark rm;
 #if INCLUDE_JVMTI
   out->print_cr("JvmtiExport can_access_local_variables %d",     _jvmti_can_access_local_variables);
@@ -1181,3 +1184,10 @@ void ciEnv::dump_replay_data(outputStream* out) {
                 entry_bci, comp_level);
   out->flush();
 }
+
+void ciEnv::dump_replay_data(outputStream* out) {
+  GUARDED_VM_ENTRY(
+    MutexLocker ml(Compile_lock);
+    dump_replay_data_unsafe(out);
+  )
+}

src/share/vm/ci/ciEnv.hpp

@@ -452,6 +452,7 @@ public:
 
   // Dump the compilation replay data for the ciEnv to the stream.
   void dump_replay_data(outputStream* out);
+  void dump_replay_data_unsafe(outputStream* out);
 };
 
 #endif // SHARE_VM_CI_CIENV_HPP

src/share/vm/ci/ciInstanceKlass.cpp

@@ -671,7 +671,6 @@ class StaticFinalFieldPrinter : public FieldClosure {
 
 
 void ciInstanceKlass::dump_replay_data(outputStream* out) {
-  ASSERT_IN_VM;
   ResourceMark rm;
 
   InstanceKlass* ik = get_instanceKlass();

src/share/vm/ci/ciMethod.cpp

@@ -846,7 +846,9 @@ bool ciMethod::has_member_arg() const {
 // Return true if allocation was successful or no MDO is required.
 bool ciMethod::ensure_method_data(methodHandle h_m) {
   EXCEPTION_CONTEXT;
-  if (is_native() || is_abstract() || h_m()->is_accessor()) return true;
+  if (is_native() || is_abstract() || h_m()->is_accessor()) {
+    return true;
+  }
   if (h_m()->method_data() == NULL) {
     Method::build_interpreter_method_data(h_m, THREAD);
     if (HAS_PENDING_EXCEPTION) {
@@ -903,22 +905,21 @@ ciMethodData* ciMethod::method_data() {
 // NULL otherwise.
 ciMethodData* ciMethod::method_data_or_null() {
   ciMethodData *md = method_data();
-  if (md->is_empty()) return NULL;
+  if (md->is_empty()) {
+    return NULL;
+  }
   return md;
 }
 
 // ------------------------------------------------------------------
 // ciMethod::ensure_method_counters
 //
-address ciMethod::ensure_method_counters() {
+MethodCounters* ciMethod::ensure_method_counters() {
   check_is_loaded();
   VM_ENTRY_MARK;
   methodHandle mh(THREAD, get_Method());
-  MethodCounters *counter = mh->method_counters();
-  if (counter == NULL) {
-    counter = Method::build_method_counters(mh(), CHECK_AND_CLEAR_NULL);
-  }
-  return (address)counter;
+  MethodCounters* method_counters = mh->get_method_counters(CHECK_NULL);
+  return method_counters;
 }
 
 // ------------------------------------------------------------------
@@ -1247,7 +1248,6 @@ ciMethodBlocks  *ciMethod::get_method_blocks() {
 #undef FETCH_FLAG_FROM_VM
 
 void ciMethod::dump_replay_data(outputStream* st) {
-  ASSERT_IN_VM;
   ResourceMark rm;
   Method* method = get_Method();
   MethodCounters* mcs = method->method_counters();

src/share/vm/ci/ciMethod.hpp

@@ -265,7 +265,7 @@ class ciMethod : public ciMetadata {
   bool is_klass_loaded(int refinfo_index, bool must_be_resolved) const;
   bool check_call(int refinfo_index, bool is_static) const;
   bool ensure_method_data();  // make sure it exists in the VM also
-  address ensure_method_counters();
+  MethodCounters* ensure_method_counters();
   int instructions_size();
   int scale_count(int count, float prof_factor = 1.);  // make MDO count commensurate with IIC
 

src/share/vm/ci/ciMethodData.cpp

@@ -78,7 +78,9 @@ ciMethodData::ciMethodData() : ciMetadata(NULL) {
 
 void ciMethodData::load_data() {
   MethodData* mdo = get_MethodData();
-  if (mdo == NULL) return;
+  if (mdo == NULL) {
+    return;
+  }
 
   // To do: don't copy the data if it is not "ripe" -- require a minimum #
   // of invocations.
@@ -373,7 +375,6 @@ void ciMethodData::print_impl(outputStream* st) {
 }
 
 void ciMethodData::dump_replay_data(outputStream* out) {
-  ASSERT_IN_VM;
   ResourceMark rm;
   MethodData* mdo = get_MethodData();
   Method* method = mdo->method();

src/share/vm/ci/ciMethodData.hpp

@@ -232,8 +232,6 @@ private:
 public:
   bool is_method_data() const { return true; }
 
-  void set_mature() { _state = mature_state; }
-
   bool is_empty()  { return _state == empty_state; }
   bool is_mature() { return _state == mature_state; }
 

src/share/vm/ci/ciReplay.cpp

@@ -965,14 +965,12 @@ void ciReplay::initialize(ciMethod* m) {
     tty->cr();
   } else {
     EXCEPTION_CONTEXT;
-    MethodCounters* mcs = method->method_counters();
     // m->_instructions_size = rec->instructions_size;
     m->_instructions_size = -1;
     m->_interpreter_invocation_count = rec->interpreter_invocation_count;
     m->_interpreter_throwout_count = rec->interpreter_throwout_count;
-    if (mcs == NULL) {
-      mcs = Method::build_method_counters(method, CHECK_AND_CLEAR);
-    }
+    MethodCounters* mcs = method->get_method_counters(CHECK_AND_CLEAR);
+    guarantee(mcs != NULL, "method counters allocation failed");
     mcs->invocation_counter()->_counter = rec->invocation_counter;
     mcs->backedge_counter()->_counter = rec->backedge_counter;
   }

src/share/vm/classfile/defaultMethods.cpp

@@ -898,7 +898,6 @@ static Method* new_method(
   m->set_max_locals(params);
   m->constMethod()->set_stackmap_data(NULL);
   m->set_code(code_start);
-  m->set_force_inline(true);
 
   return m;
 }

src/share/vm/compiler/compileBroker.cpp

@@ -1953,6 +1953,10 @@ void CompileBroker::handle_full_code_cache() {
       // Since code cache is full, immediately stop new compiles
       if (CompileBroker::set_should_compile_new_jobs(CompileBroker::stop_compilation)) {
         NMethodSweeper::log_sweep("disable_compiler");
+
+        // Switch to 'vm_state'. This ensures that possibly_sweep() can be called
+        // without having to consider the state in which the current thread is.
+        ThreadInVMfromUnknown in_vm;
         NMethodSweeper::possibly_sweep();
       }
     } else {

src/share/vm/oops/method.hpp

@@ -804,6 +804,7 @@ class Method : public Metadata {
  private:
   void print_made_not_compilable(int comp_level, bool is_osr, bool report, const char* reason);
 
+ public:
   MethodCounters* get_method_counters(TRAPS) {
     if (_method_counters == NULL) {
       build_method_counters(this, CHECK_AND_CLEAR_NULL);
@@ -811,7 +812,6 @@ class Method : public Metadata {
     return _method_counters;
   }
 
- public:
   bool   is_not_c1_compilable() const         { return access_flags().is_not_c1_compilable();  }
   void  set_not_c1_compilable()               {       _access_flags.set_not_c1_compilable();   }
   void clear_not_c1_compilable()              {       _access_flags.clear_not_c1_compilable(); }

src/share/vm/opto/bytecodeInfo.cpp

@@ -197,6 +197,7 @@ bool InlineTree::should_inline(ciMethod* callee_method, ciMethod* caller_method,
 // negative filter: should callee NOT be inlined?
 bool InlineTree::should_not_inline(ciMethod *callee_method,
                                    ciMethod* caller_method,
+                                   JVMState* jvms,
                                    WarmCallInfo* wci_result) {
 
   const char* fail_msg = NULL;
@@ -226,7 +227,7 @@ bool InlineTree::should_not_inline(ciMethod *callee_method,
     // don't inline exception code unless the top method belongs to an
     // exception class
     if (callee_method->holder()->is_subclass_of(C->env()->Throwable_klass())) {
-      ciMethod* top_method = caller_jvms() ? caller_jvms()->of_depth(1)->method() : method();
+      ciMethod* top_method = jvms->caller() != NULL ? jvms->caller()->of_depth(1)->method() : method();
       if (!top_method->holder()->is_subclass_of(C->env()->Throwable_klass())) {
         wci_result->set_profit(wci_result->profit() * 0.1);
       }
@@ -328,7 +329,7 @@ bool InlineTree::should_not_inline(ciMethod *callee_method,
 // return true if ok
 // Relocated from "InliningClosure::try_to_inline"
 bool InlineTree::try_to_inline(ciMethod* callee_method, ciMethod* caller_method,
-                               int caller_bci, ciCallProfile& profile,
+                               int caller_bci, JVMState* jvms, ciCallProfile& profile,
                                WarmCallInfo* wci_result, bool& should_delay) {
 
    // Old algorithm had funny accumulating BC-size counters
@@ -346,7 +347,7 @@ bool InlineTree::try_to_inline(ciMethod* callee_method, ciMethod* caller_method,
                      wci_result)) {
     return false;
   }
-  if (should_not_inline(callee_method, caller_method, wci_result)) {
+  if (should_not_inline(callee_method, caller_method, jvms, wci_result)) {
     return false;
   }
 
@@ -397,24 +398,35 @@ bool InlineTree::try_to_inline(ciMethod* callee_method, ciMethod* caller_method,
   }
 
   // detect direct and indirect recursive inlining
-  if (!callee_method->is_compiled_lambda_form()) {
+  {
     // count the current method and the callee
-    int inline_level = (method() == callee_method) ? 1 : 0;
-    if (inline_level > MaxRecursiveInlineLevel) {
-      set_msg("recursively inlining too deep");
-      return false;
+    const bool is_compiled_lambda_form = callee_method->is_compiled_lambda_form();
+    int inline_level = 0;
+    if (!is_compiled_lambda_form) {
+      if (method() == callee_method) {
+        inline_level++;
+      }
     }
     // count callers of current method and callee
-    JVMState* jvms = caller_jvms();
-    while (jvms != NULL && jvms->has_method()) {
-      if (jvms->method() == callee_method) {
-        inline_level++;
-        if (inline_level > MaxRecursiveInlineLevel) {
-          set_msg("recursively inlining too deep");
-          return false;
+    Node* callee_argument0 = is_compiled_lambda_form ? jvms->map()->argument(jvms, 0)->uncast() : NULL;
+    for (JVMState* j = jvms->caller(); j != NULL && j->has_method(); j = j->caller()) {
+      if (j->method() == callee_method) {
+        if (is_compiled_lambda_form) {
+          // Since compiled lambda forms are heavily reused we allow recursive inlining.  If it is truly
+          // a recursion (using the same "receiver") we limit inlining otherwise we can easily blow the
+          // compiler stack.
+          Node* caller_argument0 = j->map()->argument(j, 0)->uncast();
+          if (caller_argument0 == callee_argument0) {
+            inline_level++;
+          }
+        } else {
+          inline_level++;
         }
       }
-      jvms = jvms->caller();
+    }
+    if (inline_level > MaxRecursiveInlineLevel) {
+      set_msg("recursive inlining is too deep");
+      return false;
     }
   }
 
@@ -536,7 +548,7 @@ WarmCallInfo* InlineTree::ok_to_inline(ciMethod* callee_method, JVMState* jvms,
   // Check if inlining policy says no.
   WarmCallInfo wci = *(initial_wci);
   bool success = try_to_inline(callee_method, caller_method, caller_bci,
-                               profile, &wci, should_delay);
+                               jvms, profile, &wci, should_delay);
 
 #ifndef PRODUCT
   if (UseOldInlining && InlineWarmCalls

src/share/vm/opto/graphKit.cpp

@@ -2122,7 +2122,7 @@ Node* GraphKit::dstore_rounding(Node* n) {
 // Null check oop.  Set null-path control into Region in slot 3.
 // Make a cast-not-nullness use the other not-null control.  Return cast.
 Node* GraphKit::null_check_oop(Node* value, Node* *null_control,
-                               bool never_see_null) {
+                               bool never_see_null, bool safe_for_replace) {
   // Initial NULL check taken path
   (*null_control) = top();
   Node* cast = null_check_common(value, T_OBJECT, false, null_control);
@@ -2140,6 +2140,9 @@ Node* GraphKit::null_check_oop(Node* value, Node* *null_control,
                   Deoptimization::Action_make_not_entrant);
     (*null_control) = top();    // NULL path is dead
   }
+  if ((*null_control) == top() && safe_for_replace) {
+    replace_in_map(value, cast);
+  }
 
   // Cast away null-ness on the result
   return cast;
@@ -2634,15 +2637,17 @@ Node* GraphKit::gen_instanceof(Node* obj, Node* superklass) {
   C->set_has_split_ifs(true); // Has chance for split-if optimization
 
   ciProfileData* data = NULL;
+  bool safe_for_replace = false;
   if (java_bc() == Bytecodes::_instanceof) {  // Only for the bytecode
     data = method()->method_data()->bci_to_data(bci());
+    safe_for_replace = true;
   }
   bool never_see_null = (ProfileDynamicTypes  // aggressive use of profile
                          && seems_never_null(obj, data));
 
   // Null check; get casted pointer; set region slot 3
   Node* null_ctl = top();
-  Node* not_null_obj = null_check_oop(obj, &null_ctl, never_see_null);
+  Node* not_null_obj = null_check_oop(obj, &null_ctl, never_see_null, safe_for_replace);
 
   // If not_null_obj is dead, only null-path is taken
   if (stopped()) {              // Doing instance-of on a NULL?
@@ -2723,11 +2728,13 @@ Node* GraphKit::gen_checkcast(Node *obj, Node* superklass,
   }
 
   ciProfileData* data = NULL;
+  bool safe_for_replace = false;
   if (failure_control == NULL) {        // use MDO in regular case only
     assert(java_bc() == Bytecodes::_aastore ||
            java_bc() == Bytecodes::_checkcast,
            "interpreter profiles type checks only for these BCs");
     data = method()->method_data()->bci_to_data(bci());
+    safe_for_replace = true;
   }
 
   // Make the merge point
@@ -2742,7 +2749,7 @@ Node* GraphKit::gen_checkcast(Node *obj, Node* superklass,
 
   // Null check; get casted pointer; set region slot 3
   Node* null_ctl = top();
-  Node* not_null_obj = null_check_oop(obj, &null_ctl, never_see_null);
+  Node* not_null_obj = null_check_oop(obj, &null_ctl, never_see_null, safe_for_replace);
 
   // If not_null_obj is dead, only null-path is taken
   if (stopped()) {              // Doing instance-of on a NULL?

src/share/vm/opto/graphKit.hpp

@@ -378,8 +378,10 @@ class GraphKit : public Phase {
   // Return a cast-not-null node which depends on the not-null control.
   // If never_see_null, use an uncommon trap (*null_control sees a top).
   // The cast is not valid along the null path; keep a copy of the original.
+  // If safe_for_replace, then we can replace the value with the cast
+  // in the parsing map (the cast is guaranteed to dominate the map)
   Node* null_check_oop(Node* value, Node* *null_control,
-                       bool never_see_null = false);
+                       bool never_see_null = false, bool safe_for_replace = false);
 
   // Check the null_seen bit.
   bool seems_never_null(Node* obj, ciProfileData* data);

src/share/vm/opto/parse.hpp

@@ -73,6 +73,7 @@ protected:
   bool        try_to_inline(ciMethod* callee_method,
                             ciMethod* caller_method,
                             int caller_bci,
+                            JVMState* jvms,
                             ciCallProfile& profile,
                             WarmCallInfo* wci_result,
                             bool& should_delay);
@@ -83,6 +84,7 @@ protected:
                             WarmCallInfo* wci_result);
   bool        should_not_inline(ciMethod* callee_method,
                                 ciMethod* caller_method,
+                                JVMState* jvms,
                                 WarmCallInfo* wci_result);
   void        print_inlining(ciMethod* callee_method, int caller_bci,
                              bool success) const;

src/share/vm/opto/parse2.cpp

@@ -268,7 +268,7 @@ public:
     return adjoinRange(value, value, dest, table_index);
   }
 
-  void print(ciEnv* env) {
+  void print() {
     if (is_singleton())
       tty->print(" {%d}=>%d", lo(), dest());
     else if (lo() == min_jint)
@@ -471,8 +471,8 @@ bool Parse::create_jump_tables(Node* key_val, SwitchRange* lo, SwitchRange* hi)
   // These are the switch destinations hanging off the jumpnode
   int i = 0;
   for (SwitchRange* r = lo; r <= hi; r++) {
-    for (int j = r->lo(); j <= r->hi(); j++, i++) {
-      Node* input = _gvn.transform(new (C) JumpProjNode(jtn, i, r->dest(), j - lowval));
+    for (int64 j = r->lo(); j <= r->hi(); j++, i++) {
+      Node* input = _gvn.transform(new (C) JumpProjNode(jtn, i, r->dest(), (int)(j - lowval)));
       {
         PreserveJVMState pjvms(this);
         set_control(input);
@@ -632,7 +632,7 @@ void Parse::jump_switch_ranges(Node* key_val, SwitchRange *lo, SwitchRange *hi,
     }
     tty->print("   ");
     for( r = lo; r <= hi; r++ ) {
-      r->print(env());
+      r->print();
     }
     tty->print_cr("");
   }

src/share/vm/opto/parseHelper.cpp

@@ -343,10 +343,14 @@ void Parse::increment_and_test_invocation_counter(int limit) {
 
   // Get the Method* node.
   ciMethod* m = method();
-  address counters_adr = m->ensure_method_counters();
+  MethodCounters* counters_adr = m->ensure_method_counters();
+  if (counters_adr == NULL) {
+    C->record_failure("method counters allocation failed");
+    return;
+  }
 
   Node* ctrl = control();
-  const TypePtr* adr_type = TypeRawPtr::make(counters_adr);
+  const TypePtr* adr_type = TypeRawPtr::make((address) counters_adr);
   Node *counters_node = makecon(adr_type);
   Node* adr_iic_node = basic_plus_adr(counters_node, counters_node,
     MethodCounters::interpreter_invocation_counter_offset_in_bytes());

src/share/vm/utilities/ostream.cpp

@@ -465,7 +465,7 @@ static const char* make_log_name_internal(const char* log_name, const char* forc
 }
 
 // log_name comes from -XX:LogFile=log_name or -Xloggc:log_name
-// in log_name, %p => pipd1234 and
+// in log_name, %p => pid1234 and
 //              %t => YYYY-MM-DD_HH-MM-SS
 static const char* make_log_name(const char* log_name, const char* force_directory) {
   char timestr[32];
@@ -792,7 +792,7 @@ bool defaultStream::has_log_file() {
 
 void defaultStream::init_log() {
   // %%% Need a MutexLocker?
-  const char* log_name = LogFile != NULL ? LogFile : "hotspot_pid%p.log";
+  const char* log_name = LogFile != NULL ? LogFile : "hotspot_%p.log";
   const char* try_name = make_log_name(log_name, NULL);
   fileStream* file = new(ResourceObj::C_HEAP, mtInternal) fileStream(try_name);
   if (!file->is_open()) {

src/share/vm/utilities/vmError.cpp

@@ -1050,7 +1050,7 @@ void VMError::report_and_die() {
         FILE* replay_data_file = os::open(fd, "w");
         if (replay_data_file != NULL) {
           fileStream replay_data_stream(replay_data_file, /*need_close=*/true);
-          env->dump_replay_data(&replay_data_stream);
+          env->dump_replay_data_unsafe(&replay_data_stream);
           out.print_raw("#\n# Compiler replay data is saved as:\n# ");
           out.print_raw_cr(buffer);
         } else {

test/compiler/8013496/Test8013496.sh

-#!/bin/sh
-# 
-# Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
-# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
-# 
-# This code is free software; you can redistribute it and/or modify it
-# under the terms of the GNU General Public License version 2 only, as
-# published by the Free Software Foundation.
-# 
-# This code is distributed in the hope that it will be useful, but WITHOUT
-# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
-# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
-# version 2 for more details (a copy is included in the LICENSE file that
-# accompanied this code).
-# 
-# You should have received a copy of the GNU General Public License version
-# 2 along with this work; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
-# 
-# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
-# or visit www.oracle.com if you need additional information or have any
-# questions.
-# 
-#
-# @test
-# @bug 8013496
-# @summary Test checks that the order in which ReversedCodeCacheSize and 
-#          InitialCodeCacheSize are passed to the VM is irrelevant.  
-# @run shell Test8013496.sh
-#
-#
-## some tests require path to find test source dir
-if [ "${TESTSRC}" = "" ]
-then
-  TESTSRC=${PWD}
-  echo "TESTSRC not set.  Using "${TESTSRC}" as default"
-fi
-echo "TESTSRC=${TESTSRC}"
-## Adding common setup Variables for running shell tests.
-. ${TESTSRC}/../../test_env.sh
-set -x
-
-${TESTJAVA}/bin/java ${TESTVMOPTS} -XX:ReservedCodeCacheSize=2m -XX:InitialCodeCacheSize=500K -version > 1.out 2>&1
-${TESTJAVA}/bin/java ${TESTVMOPTS} -XX:InitialCodeCacheSize=500K -XX:ReservedCodeCacheSize=2m -version > 2.out 2>&1
-
-diff 1.out 2.out
-
-result=$?
-if [ $result -eq 0 ] ; then  
-  echo "Test Passed"
-  exit 0
-else
-  echo "Test Failed"
-  exit 1
-fi

test/compiler/codecache/CheckReservedInitialCodeCacheSizeArgOrder.java

+/*
+ * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * @bug 8013496
+ * @summary Test checks that the order in which ReversedCodeCacheSize and
+ *          InitialCodeCacheSize are passed to the VM is irrelevant.
+ * @library /testlibrary
+ *
+ */
+import com.oracle.java.testlibrary.*;
+
+public class CheckReservedInitialCodeCacheSizeArgOrder {
+  public static void main(String[] args) throws Exception {
+    ProcessBuilder pb1,  pb2;
+    OutputAnalyzer out1, out2;
+
+    pb1 = ProcessTools.createJavaProcessBuilder("-XX:InitialCodeCacheSize=4m", "-XX:ReservedCodeCacheSize=8m", "-version");
+    pb2 = ProcessTools.createJavaProcessBuilder("-XX:ReservedCodeCacheSize=8m", "-XX:InitialCodeCacheSize=4m", "-version");
+
+    out1 = new OutputAnalyzer(pb1.start());
+    out2 = new OutputAnalyzer(pb2.start());
+
+    // Check that the outputs are equal
+    if (out1.getStdout().compareTo(out2.getStdout()) != 0) {
+      throw new RuntimeException("Test failed");
+    }
+
+    out1.shouldHaveExitValue(0);
+    out2.shouldHaveExitValue(0);
+  }
+}