[IR, Native] Support partial linkage in backend

^KT-50775

kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/ir/Ir.kt

@@ -232,6 +232,7 @@ internal class KonanSymbols(
     override val throwNullPointerException = internalFunction("ThrowNullPointerException")
 
     val throwNoWhenBranchMatchedException = internalFunction("ThrowNoWhenBranchMatchedException")
+    val throwIrLinkageError = internalFunction("ThrowIrLinkageError")
 
     override val throwTypeCastException = internalFunction("ThrowTypeCastException")
 

kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/lower/BuiltinOperatorLowering.kt

@@ -57,6 +57,15 @@ internal class BuiltinOperatorLowering(val context: Context) : FileLoweringPass,
                     context.ir.symbols.throwNoWhenBranchMatchedException.owner.typeParameters.size,
                     context.ir.symbols.throwNoWhenBranchMatchedException.owner.valueParameters.size)
 
+            irBuiltins.linkageErrorSymbol -> {
+                val newExpression = IrCallImpl.fromSymbolOwner(
+                        expression.startOffset, expression.endOffset,
+                        context.ir.symbols.throwIrLinkageError
+                )
+                newExpression.putValueArgument(0, expression.getValueArgument(0)) // error message
+                newExpression
+            }
+
             else -> expression
         }
     }

kotlin-native/runtime/src/main/kotlin/kotlin/native/internal/RuntimeUtils.kt

@@ -112,6 +112,13 @@ internal fun ThrowFileFailedToInitializeException() {
     throw FileFailedToInitializeException("There was an error during file initialization")
 }
 
+internal class IrLinkageError(message: String?) : Error(message)
+
+@PublishedApi
+internal fun ThrowIrLinkageError(message: String?): Nothing {
+    throw IrLinkageError(message)
+}
+
 @ExportForCppRuntime
 internal fun PrintThrowable(throwable: Throwable) {
     println(throwable)