| // Copyright (c) 2017, the R8 project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| package com.android.tools.r8.ir.code; |
| |
| import com.android.tools.r8.cf.LoadStoreHelper; |
| import com.android.tools.r8.cf.TypeVerificationHelper; |
| import com.android.tools.r8.cf.code.CfLoad; |
| import com.android.tools.r8.dex.Constants; |
| import com.android.tools.r8.errors.Unreachable; |
| import com.android.tools.r8.graph.DexType; |
| import com.android.tools.r8.ir.conversion.CfBuilder; |
| import com.android.tools.r8.ir.conversion.DexBuilder; |
| import com.android.tools.r8.ir.optimize.Inliner.ConstraintWithTarget; |
| import com.android.tools.r8.ir.optimize.InliningConstraints; |
| |
| public class Load extends Instruction { |
| |
| public Load(StackValue dest, Value src) { |
| super(dest, src); |
| } |
| |
| @Override |
| public boolean isLoad() { |
| return true; |
| } |
| |
| @Override |
| public Load asLoad() { |
| return this; |
| } |
| |
| @Override |
| public boolean identicalNonValueNonPositionParts(Instruction other) { |
| return other.isLoad(); |
| } |
| |
| @Override |
| public int compareNonValueParts(Instruction other) { |
| return 0; |
| } |
| |
| @Override |
| public int maxInValueRegister() { |
| return Constants.U16BIT_MAX; |
| } |
| |
| @Override |
| public int maxOutValueRegister() { |
| throw new Unreachable(); |
| } |
| |
| @Override |
| public ConstraintWithTarget inliningConstraint( |
| InliningConstraints inliningConstraints, DexType invocationContext) { |
| return inliningConstraints.forLoad(); |
| } |
| |
| @Override |
| public void buildDex(DexBuilder builder) { |
| throw new Unreachable("This classfile-specific IR should not be inserted in the Dex backend."); |
| } |
| |
| @Override |
| public void buildCf(CfBuilder builder) { |
| Value value = inValues.get(0); |
| builder.add(new CfLoad(value.outType(), builder.getLocalRegister(value))); |
| } |
| |
| @Override |
| public DexType computeVerificationType(TypeVerificationHelper helper) { |
| return helper.getType(inValues.get(0)); |
| } |
| |
| @Override |
| public void insertLoadAndStores(InstructionListIterator it, LoadStoreHelper helper) { |
| // Nothing to do. This is only hit because loads and stores are insert for phis. |
| } |
| } |