Mercurial > hg > graal-compiler
view src/share/vm/opto/live.hpp @ 1164:359445e739ac
Added tag jdk7-b80 for changeset 3003ddd1d433
author | mikejwre |
---|---|
date | Thu, 21 Jan 2010 11:12:25 -0800 |
parents | a61af66fc99e |
children | c18cbe5936b8 |
line wrap: on
line source
/* * Copyright 1997-2005 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 Block; class LRG_List; class PhaseCFG; class VectorSet; class IndexSet; //------------------------------PhaseLive-------------------------------------- // Compute live-in/live-out class PhaseLive : public Phase { // Array of Sets of values live at the start of a block. // Indexed by block pre-order number. IndexSet *_live; // Array of Sets of values defined locally in the block // Indexed by block pre-order number. IndexSet *_defs; // Array of delta-set pointers, indexed by block pre-order number IndexSet **_deltas; IndexSet *_free_IndexSet; // Free list of same Block_List *_worklist; // Worklist for iterative solution const PhaseCFG &_cfg; // Basic blocks LRG_List &_names; // Mapping from Nodes to live ranges uint _maxlrg; // Largest live-range number Arena *_arena; IndexSet *getset( Block *p ); IndexSet *getfreeset( ); void freeset( const Block *p ); void add_liveout( Block *p, uint r, VectorSet &first_pass ); void add_liveout( Block *p, IndexSet *lo, VectorSet &first_pass ); public: PhaseLive( const PhaseCFG &cfg, LRG_List &names, Arena *arena ); ~PhaseLive() {} // Compute liveness info void compute(uint maxlrg); // Reset arena storage void reset() { _live = NULL; } // Return the live-out set for this block IndexSet *live( const Block * b ) { return &_live[b->_pre_order-1]; } #ifndef PRODUCT void dump( const Block *b ) const; void stats(uint iters) const; #endif };