Mercurial > hg > graal-compiler
view graal/com.oracle.graal.replacements.amd64/src/com/oracle/graal/replacements/amd64/AMD64ConvertNode.java @ 11851:04b039d82e86
Simplify constant folding.
author | Roland Schatz <roland.schatz@oracle.com> |
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date | Wed, 02 Oct 2013 12:09:51 +0200 |
parents | 2fbb9fd55dde |
children | 9334392ed279 |
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/* * Copyright (c) 2012, 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.api.meta.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.calc.*; import com.oracle.graal.nodes.calc.ConvertNode.Op; import com.oracle.graal.nodes.spi.*; import com.oracle.graal.nodes.type.*; /** * This node has the semantics of the AMD64 conversions. It is used in the lowering of the * {@link ConvertNode} which, on AMD64 needs a {@link AMD64ConvertNode} plus some fixup code that * handles the corner cases that differ between AMD64 and Java. */ public class AMD64ConvertNode extends FloatingNode implements ArithmeticLIRLowerable { @Input private ValueNode value; public final Op opcode; public AMD64ConvertNode(Op opcode, ValueNode value) { super(StampFactory.forKind(opcode.to.getStackKind())); this.opcode = opcode; this.value = value; } public Constant evalConst(Constant... inputs) { // this node should never have been created if its input is constant assert false; return null; } public void generate(ArithmeticLIRGenerator gen) { gen.setResult(this, gen.emitConvert(opcode, gen.operand(value))); } }