Mercurial > hg > graal-compiler
view src/share/vm/shark/sharkConstant.hpp @ 7949:5daaddd917a1
8006040: NPG: on_stack processing wastes space in ConstantPool
Summary: Added on_stack bit to flags. Also MetadataMarkOnStack is used for more than JVMTI so had to be moved.
Reviewed-by: dholmes, stefank
author | coleenp |
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date | Wed, 23 Jan 2013 10:34:29 -0500 |
parents | f95d63e2154a |
children |
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/* * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved. * Copyright 2009 Red Hat, Inc. * 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. * */ #ifndef SHARE_VM_SHARK_SHARKCONSTANT_HPP #define SHARE_VM_SHARK_SHARKCONSTANT_HPP #include "ci/ciStreams.hpp" #include "memory/allocation.hpp" #include "shark/sharkBuilder.hpp" #include "shark/sharkValue.hpp" class SharkConstant : public ResourceObj { public: static SharkConstant* for_ldc(ciBytecodeStream* iter); static SharkConstant* for_field(ciBytecodeStream* iter); private: SharkConstant(ciConstant constant, ciType* type); private: SharkValue* _value; ciObject* _object; ciType* _type; bool _is_loaded; bool _is_nonzero; bool _is_two_word; public: bool is_loaded() const { return _is_loaded; } bool is_nonzero() const { assert(is_loaded(), "should be"); return _is_nonzero; } bool is_two_word() const { assert(is_loaded(), "should be"); return _is_two_word; } public: SharkValue* value(SharkBuilder* builder) { assert(is_loaded(), "should be"); if (_value == NULL) { _value = SharkValue::create_generic( _type, builder->CreateInlineOop(_object), _is_nonzero); } return _value; } }; #endif // SHARE_VM_SHARK_SHARKCONSTANT_HPP