[K/N] Migrate most simple filecheck tests to new infra

^KT-62157


Merge-request: KT-MR-12376
Merged-by: Vladimir Sukharev <Vladimir.Sukharev@jetbrains.com>

compiler/testData/codegen/box/fileCheck/adopted_function_reference.kt

@@ -0,0 +1,18 @@
+// TARGET_BACKEND: NATIVE
+// FILECHECK_STAGE: CStubs
+
+inline fun foo(x: () -> Unit): String {
+    x()
+    return "OK"
+}
+
+fun String.id(s: String = this, vararg xs: Int): String = s
+
+// CHECK-LABEL: define %struct.ObjHeader* @"kfun:#box(){}kotlin.String"
+fun box(): String {
+    // CHECK-LABEL: entry
+    // CHECK-NOT: call %struct.ObjHeader* @AllocInstance
+    // CHECK-NOT: alloca
+    return foo("Fail"::id)
+    // CHECK-LABEL: epilogue:
+}