Mercurial > hg > graal-jvmci-8
view graal/com.oracle.graal.lir/src/com/oracle/graal/lir/constopt/DefUseTree.java @ 16952:2451521ed26f
Add ConstantLoadOptimization.
author | Josef Eisl <josef.eisl@jku.at> |
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date | Mon, 25 Aug 2014 17:23:14 +0200 |
parents | |
children | c88ab4f1f04a |
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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.lir.constopt; import java.util.*; import java.util.function.*; import com.oracle.graal.api.meta.*; import com.oracle.graal.compiler.common.cfg.*; import com.oracle.graal.lir.*; import com.oracle.graal.lir.StandardOp.MoveOp; /** * Represents def-use tree of a constant. */ class DefUseTree { private final LIRInstruction instruction; private final AbstractBlock<?> block; private final List<UseEntry> uses; public DefUseTree(LIRInstruction instruction, AbstractBlock<?> block) { assert instruction instanceof MoveOp : "Not a MoveOp: " + instruction; this.instruction = instruction; this.block = block; this.uses = new ArrayList<>(); } public Variable getVariable() { return (Variable) ((MoveOp) instruction).getResult(); } public Constant getConstant() { return (Constant) ((MoveOp) instruction).getInput(); } public LIRInstruction getInstruction() { return instruction; } public AbstractBlock<?> getBlock() { return block; } @Override public String toString() { return "DefUseTree [" + instruction + "|" + block + "," + uses + "]"; } public void addUsage(AbstractBlock<?> b, LIRInstruction inst, ValuePosition position) { uses.add(new UseEntry(b, inst, position)); } public int usageCount() { return uses.size(); } public void forEach(Consumer<? super UseEntry> action) { uses.forEach(action); } }