Update to 1.3.0-rc-6. (#2050)

backend.native/build.gradle

@@ -183,6 +183,7 @@ targetList.each { target ->
                 '-Xmulti-platform', '-Xuse-experimental=kotlin.Experimental',
                 '-Xuse-experimental=kotlin.contracts.ExperimentalContracts',
                 '-Xuse-experimental=kotlin.ExperimentalMultiplatform',
+                '-Xallow-result-return-type',
                 commonSrc.absolutePath,
                 project(':Interop:Runtime').file('src/main/kotlin'),
                 project(':Interop:Runtime').file('src/native/kotlin'),

backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/irasdescriptors/FakeIrUtils.kt

@@ -7,7 +7,6 @@ package org.jetbrains.kotlin.backend.konan.irasdescriptors
 
 import org.jetbrains.kotlin.backend.konan.*
 import org.jetbrains.kotlin.backend.konan.llvm.llvmSymbolOrigin
-import org.jetbrains.kotlin.idea.MainFunctionDetector
 import org.jetbrains.kotlin.ir.declarations.*
 import org.jetbrains.kotlin.ir.types.IrType
 import org.jetbrains.kotlin.ir.types.toKotlinType
@@ -38,7 +37,5 @@ internal fun IrFunction.isExternalObjCClassMethod() = this.descriptor.isExternal
 
 internal val IrDeclaration.llvmSymbolOrigin get() = this.descriptor.llvmSymbolOrigin
 
-internal fun IrFunction.isMain() = MainFunctionDetector.isMain(this.descriptor)
-
 internal fun IrType.isObjCObjectType() = this.toKotlinType().isObjCObjectType()
 

backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/llvm/LlvmDeclarations.kt

@@ -407,7 +407,7 @@ private class DeclarationsGeneratorVisitor(override val context: Context) :
         } else {
             val symbolName = if (descriptor.isExported()) {
                 descriptor.symbolName.also {
-                    if (!descriptor.isMain()) {
+                    if (descriptor.name.asString() != "main") {
                         assert(LLVMGetNamedFunction(context.llvm.llvmModule, it) == null) { it }
                     } else {
                         // As a workaround, allow `main` functions to clash because frontend accepts this.

backend.native/tests/build.gradle

@@ -43,7 +43,7 @@ repositories {
 
 dependencies {
     cli_bc project(path: ':backend.native', configuration: 'cli_bc')
-    update_tests (group: 'org',  name: 'Kotlin_dev_CompilerAllPlugins', version: testKotlinVersion) {
+    update_tests (group: 'org',  name: 'Kotlin_130_Compiler', version: testKotlinVersion) {
         artifact {
             name = 'internal/kotlin-test-data'
             type = 'zip'