[codegenerator][refactor] extract method for tramboline generation

kotlin-native/backend.native/cli.bc/src/org/jetbrains/kotlin/cli/bc/K2Native.kt

@@ -169,21 +169,12 @@ class K2Native : CLICompiler<K2NativeCompilerArguments>() {
                         null
                     }
                 })
-                putIfNotNull(GENERATE_INLINED_FUNCTION_BODY_MARKER, when (val it = arguments.generateInlinedFunctionMarkerString) {
+                putIfNotNull(GENERATE_DEBUG_TRAMPOLINE, when (val it = arguments.generateDebugTrampolineString) {
                     "enable" -> true
                     "disable" -> false
                     null -> null
                     else -> {
-                        configuration.report(ERROR, "Unsupported -Xg-generate-inline-function-body-marker= value: $it. Possible values are 'enable'/'disable'")
-                        null
-                    }
-                })
-                putIfNotNull(GENERATE_WHEN_MARKER, when (val it = arguments.generateWhenMarkerString) {
-                    "enable" -> true
-                    "disable" -> false
-                    null -> null
-                    else -> {
-                        configuration.report(ERROR, "Unsupported -Xg-generate-when-marker= value: $it. Possible values are 'enable'/'disable'")
+                        configuration.report(ERROR, "Unsupported -Xg-generate-debug-tramboline= value: $it. Possible values are 'enable'/'disable'")
                         null
                     }
                 })

kotlin-native/backend.native/cli.bc/src/org/jetbrains/kotlin/cli/bc/K2NativeCompilerArguments.kt

@@ -166,17 +166,11 @@ class K2NativeCompilerArguments : CommonCompilerArguments() {
     var lightDebugDeprecated: Boolean = false
 
     @Argument(
-            value = "-Xg-generate-inline-function-body-marker",
+            value = "-Xg-generate-debug-trampoline",
             valueDescription = "{disable|enable}",
-            description = """generates marker of inlined function body on call site to make debugger breakpoint resolution more accurate"""
+            description = """generates trampolines to make debugger breakpoint resolution more accurate (inlines, when, etc.)"""
     )
-    var generateInlinedFunctionMarkerString: String? = null
-    @Argument(
-            value = "-Xg-generate-when-marker",
-            valueDescription = "{disable|enable}",
-            description = """generates marker of when to make debugger breakpoint resolution more accurate"""
-    )
-    var generateWhenMarkerString: String? = null
+    var generateDebugTrampolineString: String? = null
 
 
     @Argument(