jdk8-mips64-public/hotspot: src/share/vm/ci/ciObjArray.cpp@b2ee5dc63353

8024070: C2 needs some form of type speculation
Summary: record unused type profile information with type system, propagate and use it.
Reviewed-by: kvn, twisti

     1 /*

     2  * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  *

    23  */

    25 #include "precompiled.hpp"

    26 #include "ci/ciNullObject.hpp"

    27 #include "ci/ciObjArray.hpp"

    28 #include "ci/ciUtilities.hpp"

    29 #include "oops/objArrayOop.hpp"

    31 // ciObjArray

    32 //

    33 // This class represents an objArrayOop in the HotSpot virtual

    34 // machine.

    36 ciObject* ciObjArray::obj_at(int index) {

    37   VM_ENTRY_MARK;

    38   objArrayOop array = get_objArrayOop();

    39   if (index < 0 || index >= array->length()) return NULL;

    40   oop o = array->obj_at(index);

    41   if (o == NULL) {

    42     return ciNullObject::make();

    43   } else {

    44     return CURRENT_ENV->get_object(o);

    45   }

    46 }

Mercurial > jdk8-mips64-public > hotspot / file revision

src/share/vm/ci/ciObjArray.cpp@b2ee5dc63353

src/share/vm/ci/ciObjArray.cpp