Mercurial > hg > truffle
view src/share/vm/opto/live.hpp @ 15054:d4a9d6f6e57d
Merge.
author | Doug Simon <doug.simon@oracle.com> |
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date | Thu, 10 Apr 2014 09:14:35 +0200 |
parents | 4ca6dc0799b6 |
children | 89152779163c |
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/* * Copyright (c) 1997, 2010, 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. * */ #ifndef SHARE_VM_OPTO_LIVE_HPP #define SHARE_VM_OPTO_LIVE_HPP #include "libadt/port.hpp" #include "libadt/vectset.hpp" #include "opto/block.hpp" #include "opto/indexSet.hpp" #include "opto/phase.hpp" #include "opto/regmask.hpp" class Block; class PhaseCFG; class VectorSet; class IndexSet; //------------------------------LRG_List--------------------------------------- // Map Node indices to Live RanGe indices. // Array lookup in the optimized case. typedef GrowableArray<uint> LRG_List; //------------------------------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 const 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, const 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 }; #endif // SHARE_VM_OPTO_LIVE_HPP