Mercurial > hg > truffle
view graal/com.oracle.graal.replacements.amd64/src/com/oracle/graal/replacements/amd64/AMD64FloatConvertNode.java @ 21084:814bd3dbc615
Manage null value manually to work around bug in older JDK versions
author | Christian Wimmer <christian.wimmer@oracle.com> |
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date | Wed, 22 Apr 2015 16:18:37 -0700 |
parents | 8fc336a04d77 |
children |
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/* * Copyright (c) 2012, 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.replacements.amd64; import com.oracle.graal.compiler.common.calc.*; import com.oracle.graal.compiler.common.type.ArithmeticOpTable.FloatConvertOp; import com.oracle.graal.graph.*; import com.oracle.graal.graph.spi.*; import com.oracle.graal.lir.gen.*; import com.oracle.graal.nodeinfo.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.calc.*; import com.oracle.graal.nodes.spi.*; /** * This node has the semantics of the AMD64 floating point conversions. It is used in the lowering * of the {@link FloatConvertNode} which, on AMD64 needs a {@link AMD64FloatConvertNode} plus some * fixup code that handles the corner cases that differ between AMD64 and Java. */ @NodeInfo public final class AMD64FloatConvertNode extends UnaryArithmeticNode<FloatConvertOp> implements ArithmeticLIRLowerable { public static final NodeClass<AMD64FloatConvertNode> TYPE = NodeClass.create(AMD64FloatConvertNode.class); protected final FloatConvert op; public AMD64FloatConvertNode(FloatConvert op, ValueNode value) { super(TYPE, table -> table.getFloatConvert(op), value); this.op = op; } @Override public ValueNode canonical(CanonicalizerTool tool, ValueNode forValue) { // nothing to do return this; } public void generate(NodeMappableLIRBuilder builder, ArithmeticLIRGenerator gen) { builder.setResult(this, gen.emitFloatConvert(op, builder.operand(getValue()))); } }