FIR2IR converter: handle receivers and parents more correctly

compiler/testData/ir/irText/stubs/builtinMap.fir.txt

@@ -8,6 +8,7 @@ FILE fqName:<root> fileName:/builtinMap.kt
         WHEN type=kotlin.collections.Map<K1 of <root>.plus, V1 of <root>.plus> origin=IF
           BRANCH
             if: CALL 'public abstract fun isEmpty (): kotlin.Boolean declared in kotlin.collections.Map' type=kotlin.Boolean origin=null
+              $this: ERROR_CALL 'Unresolved reference: this#' type=kotlin.collections.Map<out K1 of <root>.plus, V1 of <root>.plus>
             then: ERROR_CALL 'Unresolved reference: <Ambiguity: mapOf, [kotlin/collections/mapOf, kotlin/collections/mapOf]>#' type=IrErrorType
               GET_VAR 'pair: kotlin.Pair<K1 of <root>.plus, V1 of <root>.plus> declared in <root>.plus' type=kotlin.Pair<K1 of <root>.plus, V1 of <root>.plus> origin=null
           BRANCH

compiler/testData/ir/irText/stubs/javaMethod.fir.txt

@@ -1,7 +0,0 @@
-FILE fqName:<root> fileName:/javaMethod.kt
-  FUN name:test visibility:public modality:FINAL <> (j:<root>.J) returnType:kotlin.Unit 
-    VALUE_PARAMETER name:j index:0 type:<root>.J 
-    BLOCK_BODY
-      RETURN type=kotlin.Nothing from='public final fun test (j: <root>.J): kotlin.Unit declared in <root>'
-        CALL 'public open fun bar (): kotlin.Unit declared in <root>.J' type=kotlin.Unit origin=null
-

compiler/testData/ir/irText/stubs/javaMethod.kt

@@ -6,5 +6,6 @@ public class J {
 }
 
 // FILE: javaMethod.kt
+// FIR_IDENTICAL
 
 fun test(j: J) = j.bar()

compiler/testData/ir/irText/stubs/javaNestedClass.fir.txt

@@ -1,7 +0,0 @@
-FILE fqName:<root> fileName:/javaNestedClass.kt
-  FUN name:test visibility:public modality:FINAL <> (jj:<root>.J.JJ) returnType:kotlin.Unit 
-    VALUE_PARAMETER name:jj index:0 type:<root>.J.JJ 
-    BLOCK_BODY
-      RETURN type=kotlin.Nothing from='public final fun test (jj: <root>.J.JJ): kotlin.Unit declared in <root>'
-        CALL 'public open fun foo (): kotlin.Unit declared in <root>.J.JJ' type=kotlin.Unit origin=null
-

compiler/testData/ir/irText/stubs/javaNestedClass.kt

@@ -10,4 +10,5 @@ public class J {
 
 
 // FILE: javaNestedClass.kt
+// FIR_IDENTICAL
 fun test(jj: J.JJ) = jj.foo()

compiler/testData/ir/irText/stubs/kotlinInnerClass.fir.txt

@@ -1,7 +0,0 @@
-FILE fqName:<root> fileName:/kotlinInnerClass.kt
-  FUN name:test visibility:public modality:FINAL <> (inner:<root>.Outer.Inner) returnType:kotlin.Unit 
-    VALUE_PARAMETER name:inner index:0 type:<root>.Outer.Inner 
-    BLOCK_BODY
-      RETURN type=kotlin.Nothing from='public final fun test (inner: <root>.Outer.Inner): kotlin.Unit declared in <root>'
-        CALL 'public final fun foo (): kotlin.Unit declared in <root>.Outer.Inner' type=kotlin.Unit origin=null
-

compiler/testData/ir/irText/stubs/kotlinInnerClass.kt

@@ -10,4 +10,5 @@ class Outer {
 }
 
 // FILE: kotlinInnerClass.kt
+// FIR_IDENTICAL
 fun test(inner: Outer.Inner) = inner.foo()

compiler/testData/ir/irText/stubs/simple.fir.txt

@@ -3,6 +3,7 @@ FILE fqName:<root> fileName:/simple.kt
     FIELD PROPERTY_BACKING_FIELD name:test type:kotlin.Int visibility:public [final,static] 
       EXPRESSION_BODY
         CALL 'public final fun plus (other: kotlin.Int): kotlin.Int declared in kotlin.Int' type=kotlin.Int origin=null
+          $this: CONST Int type=kotlin.Int value=2
           other: CONST Int type=kotlin.Int value=2
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test> visibility:public modality:FINAL <> () returnType:kotlin.Int 
       correspondingProperty: PROPERTY name:test visibility:public modality:FINAL [val]