Mercurial > hg > graal-compiler
view graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/cfg/HIRLoop.java @ 21556:48c1ebd24120
renamed com.oracle.graal.api[meta|code] modules to com.oracle.jvmci.[meta|code] (JBS:GRAAL-53)
author | Doug Simon <doug.simon@oracle.com> |
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date | Wed, 27 May 2015 00:36:16 +0200 |
parents | c5c1c2de3cb8 |
children | 0e095e2c24e2 |
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/* * Copyright (c) 2014, 2014, 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. */ package com.oracle.graal.nodes.cfg; import com.oracle.graal.compiler.common.cfg.*; import com.oracle.graal.nodes.*; import com.oracle.jvmci.meta.*; public final class HIRLoop extends Loop<Block> { private LocationSet killLocations; protected HIRLoop(Loop<Block> parent, int index, Block header) { super(parent, index, header); } @Override public long numBackedges() { return ((LoopBeginNode) getHeader().getBeginNode()).loopEnds().count(); } public LocationSet getKillLocations() { if (killLocations == null) { killLocations = new LocationSet(); for (Block b : this.getBlocks()) { if (b.getLoop() == this) { killLocations.addAll(b.getKillLocations()); if (killLocations.isAny()) { break; } } } } for (Loop<Block> child : this.getChildren()) { if (killLocations.isAny()) { break; } killLocations.addAll(((HIRLoop) child).getKillLocations()); } return killLocations; } public boolean canKill(LocationIdentity location) { return getKillLocations().contains(location); } }