JVM_IR: Generate java 8 parameter names when -java-parameters is passed.

The type mapper does not map enum parameters and outer this parameters
to the right parameter signature kinds so around half the tests
are still failing. Since a new type mapper is being worked
on I will not investigate that further right now.

compiler/backend/src/org/jetbrains/kotlin/codegen/generateJava8ParameterNames.kt

@@ -23,7 +23,7 @@ import org.jetbrains.kotlin.resolve.jvm.jvmSignature.JvmMethodSignature
 import org.jetbrains.org.objectweb.asm.MethodVisitor
 import org.jetbrains.org.objectweb.asm.Opcodes
 
-internal fun generateParameterNames(
+fun generateParameterNames(
         functionDescriptor: FunctionDescriptor,
         mv: MethodVisitor,
         jvmSignature: JvmMethodSignature,

compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/codegen/FunctionCodegen.kt

@@ -48,6 +48,8 @@ open class FunctionCodegen(
         val flags = calculateMethodFlags(irFunction.isStatic)
         val methodVisitor = createMethod(flags, signature)
 
+        generateParameterNames(descriptor, methodVisitor, signature, state, flags.and(Opcodes.ACC_SYNTHETIC) != 0)
+
         if (irFunction.origin != IrDeclarationOrigin.FUNCTION_FOR_DEFAULT_PARAMETER) {
             AnnotationCodegen(classCodegen, state, methodVisitor::visitAnnotation).genAnnotations(irFunction, signature.asmMethod.returnType)
             FunctionCodegen.generateParameterAnnotations(descriptor, methodVisitor, signature, DummyOldInnerClassConsumer(), state)

compiler/testData/codegen/box/parametersMetadata/delegation.kt

@@ -1,5 +1,4 @@
 // SKIP_JDK6
-// IGNORE_BACKEND: JVM_IR
 // TARGET_BACKEND: JVM
 // WITH_RUNTIME
 // FULL_JDK

compiler/testData/codegen/box/parametersMetadata/extensionFunction.kt

@@ -1,5 +1,4 @@
 // SKIP_JDK6
-// IGNORE_BACKEND: JVM_IR
 // TARGET_BACKEND: JVM
 // WITH_RUNTIME
 // FULL_JDK

compiler/testData/codegen/box/parametersMetadata/function.kt

@@ -1,5 +1,4 @@
 // SKIP_JDK6
-// IGNORE_BACKEND: JVM_IR
 // TARGET_BACKEND: JVM
 // WITH_RUNTIME
 // FULL_JDK