org.jetbrains.kotlin.backend.jvm.intrinsics.HashCode.kt Maven / Gradle / Ivy
/*
* Copyright 2010-2016 JetBrains s.r.o.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
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package org.jetbrains.kotlin.backend.jvm.intrinsics
import org.jetbrains.kotlin.backend.jvm.JvmLoweredDeclarationOrigin
import org.jetbrains.kotlin.backend.jvm.codegen.*
import org.jetbrains.kotlin.codegen.AsmUtil
import org.jetbrains.kotlin.codegen.DescriptorAsmUtil
import org.jetbrains.kotlin.config.JvmTarget
import org.jetbrains.kotlin.ir.declarations.IrDeclarationOrigin
import org.jetbrains.kotlin.ir.expressions.IrFunctionAccessExpression
import org.jetbrains.kotlin.ir.util.render
import org.jetbrains.org.objectweb.asm.Opcodes
import org.jetbrains.org.objectweb.asm.Type
// TODO Implement hashCode on primitive types as a lowering.
object HashCode : IntrinsicMethod() {
override fun invoke(expression: IrFunctionAccessExpression, codegen: ExpressionCodegen, data: BlockInfo) = with(codegen) {
val receiver = expression.dispatchReceiver ?: error("No receiver for hashCode: ${expression.render()}")
val result = receiver.accept(this, data).materialized()
val target = context.state.target
when {
irFunction.origin == JvmLoweredDeclarationOrigin.INLINE_CLASS_GENERATED_IMPL_METHOD ||
irFunction.origin == IrDeclarationOrigin.GENERATED_DATA_CLASS_MEMBER ->
DescriptorAsmUtil.genHashCode(mv, mv, result.type, target)
target == JvmTarget.JVM_1_6 || !AsmUtil.isPrimitive(result.type) -> {
result.materializeAtBoxed(receiver.type)
mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Object", "hashCode", "()I", false)
}
else -> {
val boxedType = AsmUtil.boxType(result.type)
mv.visitMethodInsn(
Opcodes.INVOKESTATIC,
boxedType.internalName,
"hashCode",
Type.getMethodDescriptor(Type.INT_TYPE, result.type),
false
)
}
}
MaterialValue(codegen, Type.INT_TYPE, codegen.context.irBuiltIns.intType)
}
}