Generate synthetic functions for local functions with default values, by

re-ordering the lowering phases.

The changes in InterfaceLowering are necessary so that IrElements that
target the removed functions are re-targeted to the new functions in
DefaultImpls. This affects local functions in interface functions since
now LocalDeclarationsLowering comes before InterfaceLowering.

compiler/testData/codegen/box/callableReference/varargAndDefaults/localFunctionWithDefault.kt

@@ -1,5 +1,5 @@
 // !LANGUAGE: +NewInference
-// IGNORE_BACKEND: JVM_IR, JS
+// IGNORE_BACKEND: JS
 
 fun call0(f: (String) -> String, x: String): String = f(x)
 fun call1(f: (String, String) -> String, x: String, y: String): String = f(x, y)

compiler/testData/codegen/box/closures/kt5589.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND: JVM_IR
 fun box(): String {
     val x = "OK"
     fun bar(y: String = x): String = y

compiler/testData/codegen/box/functions/localFunctions/kt3978.kt

@@ -1,11 +1,10 @@
-// IGNORE_BACKEND: JVM_IR
 fun box() : String {
-
-
     fun local(i: Int = 1) : Int {
         return i
     }
 
-    return if (local() != 1) "fail" else "OK"
-}
+    if (local() != 1) return "Fail 1"
+    if (local(2) != 2) return "Fail 2"
 
+    return "OK"
+}

compiler/testData/codegen/box/functions/localFunctions/kt3978_2.kt

@@ -0,0 +1,12 @@
+class C() {
+    fun box(): Int {
+        fun local(i: Int = 1): Int {
+            return i
+        }
+        return local()
+    }
+}
+
+fun box(): String {
+    return if (C().box() != 1) "fail" else "OK"
+}

compiler/testData/codegen/box/functions/localFunctions/parameterAsDefaultValue.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND: JVM_IR
 fun foo(): String {
     fun bar(x: String, y: String = x): String {
         return y

compiler/testData/codegen/box/jvm8/defaults/accessor.kt

@@ -1,5 +1,4 @@
 // !JVM_DEFAULT_MODE: enable
-// IGNORE_BACKEND: JVM_IR
 // TARGET_BACKEND: JVM
 // JVM_TARGET: 1.8
 // WITH_RUNTIME

compiler/testData/codegen/box/jvm8/defaults/accessorFromCompanion.kt

@@ -1,5 +1,4 @@
 // !JVM_DEFAULT_MODE: enable
-// IGNORE_BACKEND: JVM_IR
 // TARGET_BACKEND: JVM
 // JVM_TARGET: 1.8
 // WITH_RUNTIME

compiler/testData/codegen/box/jvm8/defaults/accessorsFromDefaultImpls.kt

@@ -1,5 +1,4 @@
 // !JVM_DEFAULT_MODE: enable
-// IGNORE_BACKEND: JVM_IR
 // TARGET_BACKEND: JVM
 // JVM_TARGET: 1.8
 // WITH_RUNTIME

compiler/testData/codegen/box/jvm8/defaults/inline.kt

@@ -1,5 +1,4 @@
 // !JVM_DEFAULT_MODE: enable
-// IGNORE_BACKEND: JVM_IR
 // TARGET_BACKEND: JVM
 // JVM_TARGET: 1.8
 // WITH_RUNTIME

compiler/testData/codegen/box/jvm8/defaults/privateDefaultFromDefaultImpl.kt

@@ -1,5 +1,4 @@
 // !JVM_DEFAULT_MODE: enable
-// IGNORE_BACKEND: JVM_IR
 // TARGET_BACKEND: JVM
 // JVM_TARGET: 1.8
 // WITH_RUNTIME

compiler/testData/codegen/box/localClasses/kt3584.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND: JVM_IR
 fun box(): String {
     val s = "captured";