1 /*
   2  * Copyright (c) 2013, 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 package com.oracle.graal.lir.hsail;
  24 
  25 import com.oracle.graal.lir.*;
  26 import com.oracle.graal.api.meta.*;
  27 import com.oracle.graal.asm.hsail.*;
  28 import com.oracle.graal.graph.*;
  29 import com.oracle.graal.lir.asm.*;
  30 
  31 /**
  32  * Defines bit manipulation operations.
  33  */
  34 public class HSAILBitManipulationOp extends HSAILLIRInstruction {
  35 
  36     public enum IntrinsicOpcode {
  37         IPOPCNT, LPOPCNT, IBSR, LBSR, BSF;
  38     }
  39 
  40     @Opcode private final IntrinsicOpcode opcode;
  41     @Def protected Value result;
  42     @Use({OperandFlag.REG}) protected Value input;
  43 
  44     public HSAILBitManipulationOp(IntrinsicOpcode opcode, Value result, Value input) {
  45         this.opcode = opcode;
  46         this.result = result;
  47         this.input = input;
  48     }
  49 
  50     @Override
  51     public void emitCode(TargetMethodAssembler tasm, HSAILAssembler masm) {
  52         switch (opcode) {
  53             case IPOPCNT:
  54                 throw GraalInternalError.shouldNotReachHere();
  55             case LPOPCNT:
  56                 throw GraalInternalError.shouldNotReachHere();
  57             default:
  58                 throw GraalInternalError.shouldNotReachHere();
  59         }
  60     }
  61 }