Mercurial > hg > graal-compiler
view graal/com.oracle.graal.replacements/src/com/oracle/graal/replacements/nodes/ReadRegisterNode.java @ 15262:cd51b1253c4c
replaced the link between a HotSpotResolvedJavaMethod and a SpeculationLog with a ClassValue based mechanism (GRAAL-727)
author | Doug Simon <doug.simon@oracle.com> |
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date | Tue, 22 Apr 2014 15:46:06 +0200 |
parents | 882f4cb7cfcf |
children | c0b8d395368b |
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/* * Copyright (c) 2012, 2013, 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.replacements.nodes; import com.oracle.graal.api.code.*; import com.oracle.graal.api.meta.*; import com.oracle.graal.compiler.common.type.*; import com.oracle.graal.graph.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.spi.*; /** * Access the value of a specific register. */ @NodeInfo(nameTemplate = "ReadRegister %{p#register}") public final class ReadRegisterNode extends FixedWithNextNode implements LIRLowerable { /** * The fixed register to access. */ private final Register register; /** * When true, subsequent uses of this node use the fixed register; when false, the value is * moved into a new virtual register so that the fixed register is not seen by uses. */ private final boolean directUse; /** * When true, this node is also an implicit definition of the value for the register allocator, * i.e., the register is an implicit incoming value; when false, the register must be defined in * the same method or must be an register excluded from register allocation. */ private final boolean incoming; public ReadRegisterNode(Register register, Kind kind, boolean directUse, boolean incoming) { super(StampFactory.forKind(kind)); assert register != null; this.register = register; this.directUse = directUse; this.incoming = incoming; } /** * Constructor to be used by node intrinsics where the stamp is inferred from the intrinsic * definition. */ public ReadRegisterNode(Register register, boolean directUse, boolean incoming) { super(StampFactory.forNodeIntrinsic()); assert register != null; this.register = register; this.directUse = directUse; this.incoming = incoming; } @Override public void generate(NodeLIRBuilderTool generator) { Value result = register.asValue(getKind()); if (incoming) { generator.getLIRGeneratorTool().emitIncomingValues(new Value[]{result}); } if (!directUse) { result = generator.getLIRGeneratorTool().emitMove(result); } generator.setResult(this, result); } @Override public String toString(Verbosity verbosity) { if (verbosity == Verbosity.Name) { return super.toString(Verbosity.Name) + "%" + register; } else { return super.toString(verbosity); } } }