| // 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.errors.Unreachable; |
| import com.android.tools.r8.ir.code.If; |
| import com.android.tools.r8.ir.code.If.Type; |
| import com.android.tools.r8.ir.code.ValueType; |
| import org.objectweb.asm.MethodVisitor; |
| import org.objectweb.asm.Opcodes; |
| |
| public class CfIf extends CfInstruction { |
| |
| private final If.Type kind; |
| private final ValueType type; |
| private final CfLabel target; |
| |
| public CfIf(If.Type kind, ValueType type, CfLabel target) { |
| this.kind = kind; |
| this.type = type; |
| this.target = target; |
| } |
| |
| public ValueType getType() { |
| return type; |
| } |
| |
| public Type getKind() { |
| return kind; |
| } |
| |
| public CfLabel getTarget() { |
| return target; |
| } |
| |
| public int getOpcode() { |
| switch (kind) { |
| case EQ: |
| return type.isObject() ? Opcodes.IFNULL : Opcodes.IFEQ; |
| case GE: |
| return Opcodes.IFGE; |
| case GT: |
| return Opcodes.IFGT; |
| case LE: |
| return Opcodes.IFLE; |
| case LT: |
| return Opcodes.IFLT; |
| case NE: |
| return type.isObject() ? Opcodes.IFNONNULL : Opcodes.IFNE; |
| default: |
| throw new Unreachable("Unexpected type " + type); |
| } |
| } |
| |
| @Override |
| public void print(CfPrinter printer) { |
| printer.print(this); |
| } |
| |
| @Override |
| public void write(MethodVisitor visitor) { |
| visitor.visitJumpInsn(getOpcode(), target.getLabel()); |
| } |
| } |