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// Copyright (c) 2016, 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.code;
import com.android.tools.r8.dex.Constants;
import com.android.tools.r8.dex.IndexedItemCollection;
import com.android.tools.r8.graph.GraphLens;
import com.android.tools.r8.graph.ObjectToOffsetMapping;
import com.android.tools.r8.graph.ProgramMethod;
import com.android.tools.r8.ir.conversion.LensCodeRewriterUtils;
import com.android.tools.r8.naming.ClassNameMapper;
import com.android.tools.r8.utils.structural.CompareToVisitor;
import com.android.tools.r8.utils.structural.StructuralSpecification;
import java.nio.ShortBuffer;
abstract class Format11n extends Base1Format {
public final byte A, B;
private static void specify(StructuralSpecification<Format11n, ?> spec) {
spec.withInt(i -> i.A).withInt(i -> i.B);
}
// #+B | vA | op
/*package*/ Format11n(int high, BytecodeStream stream) {
super(stream);
A = (byte) (high & 0xf);
// Sign extend 4bit value.
high >>= 4;
if ((high & Constants.S4BIT_SIGN_MASK) != 0) {
B = (byte) (~(~high & 0xf));
} else {
B = (byte) (high & 0xf);
}
}
/*package*/ Format11n(int A, int B) {
assert 0 <= A && A <= Constants.U4BIT_MAX;
assert Constants.S4BIT_MIN <= B && B <= Constants.S4BIT_MAX;
this.A = (byte) A;
this.B = (byte) B;
}
@Override
public void write(
ShortBuffer dest,
ProgramMethod context,
GraphLens graphLens,
ObjectToOffsetMapping mapping,
LensCodeRewriterUtils rewriter) {
writeFirst(B, A, dest);
}
@Override
public final int hashCode() {
return ((A << 4) | B) ^ getClass().hashCode();
}
@Override
final int internalAcceptCompareTo(Instruction other, CompareToVisitor visitor) {
return visitor.visit(this, (Format11n) other, Format11n::specify);
}
@Override
public String toString(ClassNameMapper naming) {
return formatString("v" + A + ", #" + B);
}
@Override
public void collectIndexedItems(
IndexedItemCollection indexedItems,
ProgramMethod context,
GraphLens graphLens,
LensCodeRewriterUtils rewriter) {
// No references.
}
}