1 /*
   2  * Copyright (c) 2013, 2015, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 package org.graalvm.compiler.lir.amd64;
  25 
  26 import static org.graalvm.compiler.lir.LIRInstruction.OperandFlag.COMPOSITE;
  27 
  28 import org.graalvm.compiler.asm.amd64.AMD64MacroAssembler;
  29 import org.graalvm.compiler.debug.GraalError;
  30 import org.graalvm.compiler.lir.LIRInstructionClass;
  31 import org.graalvm.compiler.lir.asm.CompilationResultBuilder;
  32 
  33 public final class AMD64PrefetchOp extends AMD64LIRInstruction {
  34     public static final LIRInstructionClass<AMD64PrefetchOp> TYPE = LIRInstructionClass.create(AMD64PrefetchOp.class);
  35 
  36     private final int instr;  // AllocatePrefetchInstr
  37     @Alive({COMPOSITE}) protected AMD64AddressValue address;
  38 
  39     public AMD64PrefetchOp(AMD64AddressValue address, int instr) {
  40         super(TYPE);
  41         this.address = address;
  42         this.instr = instr;
  43     }
  44 
  45     @Override
  46     public void emitCode(CompilationResultBuilder crb, AMD64MacroAssembler masm) {
  47         switch (instr) {
  48             case 0:
  49                 masm.prefetchnta(address.toAddress());
  50                 break;
  51             case 1:
  52                 masm.prefetcht0(address.toAddress());
  53                 break;
  54             case 2:
  55                 masm.prefetcht2(address.toAddress());
  56                 break;
  57             case 3:
  58                 masm.prefetchw(address.toAddress());
  59                 break;
  60             default:
  61                 throw GraalError.shouldNotReachHere("unspported prefetch op " + instr);
  62 
  63         }
  64     }
  65 }