Mercurial > hg > graal-compiler
view src/share/vm/opto/multnode.hpp @ 1333:3f12a94552cc
Added tag jdk7-b88 for changeset 4b60f23c4223
author | mikejwre |
---|---|
date | Thu, 08 Apr 2010 17:02:41 -0700 |
parents | d1605aabd0a1 |
children | c18cbe5936b8 |
line wrap: on
line source
/* * Copyright 1997-2008 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * */ class Matcher; class ProjNode; //------------------------------MultiNode-------------------------------------- // This class defines a MultiNode, a Node which produces many values. The // values are wrapped up in a tuple Type, i.e. a TypeTuple. class MultiNode : public Node { public: MultiNode( uint required ) : Node(required) { init_class_id(Class_Multi); } virtual int Opcode() const; virtual const Type *bottom_type() const = 0; virtual bool is_CFG() const { return true; } virtual uint hash() const { return NO_HASH; } // CFG nodes do not hash virtual bool depends_only_on_test() const { return false; } virtual const RegMask &out_RegMask() const; virtual Node *match( const ProjNode *proj, const Matcher *m ); virtual uint ideal_reg() const { return NotAMachineReg; } ProjNode* proj_out(uint which_proj) const; // Get a named projection }; //------------------------------ProjNode--------------------------------------- // This class defines a Projection node. Projections project a single element // out of a tuple (or Signature) type. Only MultiNodes produce TypeTuple // results. class ProjNode : public Node { protected: virtual uint hash() const; virtual uint cmp( const Node &n ) const; virtual uint size_of() const; void check_con() const; // Called from constructor. public: ProjNode( Node *src, uint con, bool io_use = false ) : Node( src ), _con(con), _is_io_use(io_use) { init_class_id(Class_Proj); // Optimistic setting. Need additional checks in Node::is_dead_loop_safe(). if (con != TypeFunc::Memory || src->is_Start()) init_flags(Flag_is_dead_loop_safe); debug_only(check_con()); } const uint _con; // The field in the tuple we are projecting const bool _is_io_use; // Used to distinguish between the projections // used on the control and io paths from a macro node virtual int Opcode() const; virtual bool is_CFG() const; virtual bool depends_only_on_test() const { return false; } virtual const Type *bottom_type() const; virtual const TypePtr *adr_type() const; virtual bool pinned() const; virtual const Type *Value( PhaseTransform *phase ) const; virtual uint ideal_reg() const; virtual const RegMask &out_RegMask() const; #ifndef PRODUCT virtual void dump_spec(outputStream *st) const; #endif };