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 
  25 
  26 package org.graalvm.compiler.core.aarch64;
  27 
  28 import static jdk.vm.ci.code.ValueUtil.asRegister;
  29 
  30 import org.graalvm.compiler.asm.aarch64.AArch64MacroAssembler;
  31 import org.graalvm.compiler.core.common.calc.FloatConvert;
  32 import org.graalvm.compiler.debug.GraalError;
  33 import org.graalvm.compiler.lir.LIRInstructionClass;
  34 import org.graalvm.compiler.lir.aarch64.AArch64LIRInstruction;
  35 import org.graalvm.compiler.lir.asm.CompilationResultBuilder;
  36 
  37 import jdk.vm.ci.code.Register;
  38 import jdk.vm.ci.meta.AllocatableValue;
  39 
  40 public final class AArch64FloatConvertOp extends AArch64LIRInstruction {
  41     private static final LIRInstructionClass<AArch64FloatConvertOp> TYPE = LIRInstructionClass.create(AArch64FloatConvertOp.class);
  42 
  43     private final FloatConvert op;
  44     @Def protected AllocatableValue resultValue;
  45     @Use protected AllocatableValue inputValue;
  46 
  47     protected AArch64FloatConvertOp(FloatConvert op, AllocatableValue resultValue, AllocatableValue inputValue) {
  48         super(TYPE);
  49         this.op = op;
  50         this.resultValue = resultValue;
  51         this.inputValue = inputValue;
  52     }
  53 
  54     @Override
  55     public void emitCode(CompilationResultBuilder crb, AArch64MacroAssembler masm) {
  56         int fromSize = inputValue.getPlatformKind().getSizeInBytes() * Byte.SIZE;
  57         int toSize = resultValue.getPlatformKind().getSizeInBytes() * Byte.SIZE;
  58 
  59         Register result = asRegister(resultValue);
  60         Register input = asRegister(inputValue);
  61         switch (op) {
  62             case F2I:
  63             case D2I:
  64             case F2L:
  65             case D2L:
  66                 masm.fcvtzs(toSize, fromSize, result, input);
  67                 break;
  68             case I2F:
  69             case I2D:
  70             case L2F:
  71             case L2D:
  72                 masm.scvtf(toSize, fromSize, result, input);
  73                 break;
  74             case D2F:
  75             case F2D:
  76                 masm.fcvt(fromSize, result, input);
  77                 break;
  78             default:
  79                 throw GraalError.shouldNotReachHere();
  80         }
  81     }
  82 
  83 }