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// 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.cf.code;
import com.android.tools.r8.cf.CfPrinter;
import com.android.tools.r8.cf.code.CfFrame.FrameType;
import com.android.tools.r8.errors.Unreachable;
import com.android.tools.r8.graph.AppView;
import com.android.tools.r8.graph.CfCode;
import com.android.tools.r8.graph.CfCompareHelper;
import com.android.tools.r8.graph.DexItemFactory;
import com.android.tools.r8.graph.DexType;
import com.android.tools.r8.graph.GraphLens;
import com.android.tools.r8.graph.InitClassLens;
import com.android.tools.r8.graph.ProgramMethod;
import com.android.tools.r8.ir.code.MemberType;
import com.android.tools.r8.ir.conversion.CfSourceCode;
import com.android.tools.r8.ir.conversion.CfState;
import com.android.tools.r8.ir.conversion.CfState.Slot;
import com.android.tools.r8.ir.conversion.IRBuilder;
import com.android.tools.r8.ir.conversion.LensCodeRewriterUtils;
import com.android.tools.r8.ir.optimize.Inliner.ConstraintWithTarget;
import com.android.tools.r8.ir.optimize.InliningConstraints;
import com.android.tools.r8.naming.NamingLens;
import com.android.tools.r8.utils.structural.CompareToVisitor;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.Opcodes;
public class CfArrayStore extends CfInstruction {
private final MemberType type;
public CfArrayStore(MemberType type) {
this.type = type;
}
public MemberType getType() {
return type;
}
@Override
public int getCompareToId() {
return getStoreType();
}
@Override
public int internalAcceptCompareTo(
CfInstruction other, CompareToVisitor visitor, CfCompareHelper helper) {
return CfCompareHelper.compareIdUniquelyDeterminesEquality(this, other);
}
private int getStoreType() {
switch (type) {
case OBJECT:
return Opcodes.AASTORE;
case BOOLEAN_OR_BYTE:
return Opcodes.BASTORE;
case CHAR:
return Opcodes.CASTORE;
case SHORT:
return Opcodes.SASTORE;
case INT:
return Opcodes.IASTORE;
case FLOAT:
return Opcodes.FASTORE;
case LONG:
return Opcodes.LASTORE;
case DOUBLE:
return Opcodes.DASTORE;
default:
throw new Unreachable("Unexpected type " + type);
}
}
@Override
public void write(
AppView<?> appView,
ProgramMethod context,
DexItemFactory dexItemFactory,
GraphLens graphLens,
InitClassLens initClassLens,
NamingLens namingLens,
LensCodeRewriterUtils rewriter,
MethodVisitor visitor) {
visitor.visitInsn(getStoreType());
}
@Override
public void print(CfPrinter printer) {
printer.print(this);
}
@Override
public boolean canThrow() {
return true;
}
@Override
public void buildIR(IRBuilder builder, CfState state, CfSourceCode code) {
Slot value = state.pop();
Slot index = state.pop();
Slot array = state.pop();
builder.addArrayPut(type, value.register, array.register, index.register);
}
@Override
public ConstraintWithTarget inliningConstraint(
InliningConstraints inliningConstraints, CfCode code, ProgramMethod context) {
return inliningConstraints.forArrayPut();
}
@Override
public void evaluate(
CfFrameVerificationHelper frameBuilder,
DexType context,
DexType returnType,
DexItemFactory factory,
InitClassLens initClassLens) {
// ..., arrayref, index, value →
// ...
frameBuilder
.popAndDiscard(FrameType.fromMemberType(type, factory))
.popAndDiscardInitialized(factory.objectArrayType, factory.intType);
}
}