Drop IrPropertyAccessor (and subclasses).

Drop IrLocalPropertyAccessor (and subclasses).
Introduce IrField.

compiler/testData/ir/irText/lambdas/anonymousFunction.txt

@@ -1,8 +1,13 @@
 FILE /anonymousFunction.kt
   PROPERTY public val anonymous: () -> kotlin.Unit
-    EXPRESSION_BODY
-      BLOCK type=() -> kotlin.Unit operator=ANONYMOUS_FUNCTION
-        FUN local final fun <no name provided>(): kotlin.Unit
-          BLOCK_BODY
-            CALL 'println(): Unit' type=kotlin.Unit operator=null
-        CALLABLE_REFERENCE '<no name provided>(): Unit' type=() -> kotlin.Unit operator=ANONYMOUS_FUNCTION
+    FIELD public val anonymous: () -> kotlin.Unit
+      EXPRESSION_BODY
+        BLOCK type=() -> kotlin.Unit operator=ANONYMOUS_FUNCTION
+          FUN local final fun <no name provided>(): kotlin.Unit
+            BLOCK_BODY
+              CALL 'println(): Unit' type=kotlin.Unit operator=null
+          CALLABLE_REFERENCE '<no name provided>(): Unit' type=() -> kotlin.Unit operator=ANONYMOUS_FUNCTION
+    FUN public fun <get-anonymous>(): () -> kotlin.Unit
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='<get-anonymous>(): () -> Unit'
+          GET_BACKING_FIELD 'anonymous: () -> Unit' type=() -> kotlin.Unit operator=null

compiler/testData/ir/irText/lambdas/justLambda.txt

@@ -1,16 +1,26 @@
 FILE /justLambda.kt
   PROPERTY public val test1: () -> kotlin.Int
-    EXPRESSION_BODY
-      BLOCK type=() -> kotlin.Int operator=LAMBDA
-        FUN local final fun <anonymous>(): kotlin.Int
-          BLOCK_BODY
-            RETURN type=kotlin.Nothing from='<anonymous>(): Int'
-              CONST Int type=kotlin.Int value='42'
-        CALLABLE_REFERENCE '<anonymous>(): Int' type=() -> kotlin.Int operator=LAMBDA
+    FIELD public val test1: () -> kotlin.Int
+      EXPRESSION_BODY
+        BLOCK type=() -> kotlin.Int operator=LAMBDA
+          FUN local final fun <anonymous>(): kotlin.Int
+            BLOCK_BODY
+              RETURN type=kotlin.Nothing from='<anonymous>(): Int'
+                CONST Int type=kotlin.Int value='42'
+          CALLABLE_REFERENCE '<anonymous>(): Int' type=() -> kotlin.Int operator=LAMBDA
+    FUN public fun <get-test1>(): () -> kotlin.Int
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='<get-test1>(): () -> Int'
+          GET_BACKING_FIELD 'test1: () -> Int' type=() -> kotlin.Int operator=null
   PROPERTY public val test2: () -> kotlin.Unit
-    EXPRESSION_BODY
-      BLOCK type=() -> kotlin.Unit operator=LAMBDA
-        FUN local final fun <anonymous>(): kotlin.Unit
-          BLOCK_BODY
-            RETURN type=kotlin.Nothing from='<anonymous>(): Unit'
-        CALLABLE_REFERENCE '<anonymous>(): Unit' type=() -> kotlin.Unit operator=LAMBDA
+    FIELD public val test2: () -> kotlin.Unit
+      EXPRESSION_BODY
+        BLOCK type=() -> kotlin.Unit operator=LAMBDA
+          FUN local final fun <anonymous>(): kotlin.Unit
+            BLOCK_BODY
+              RETURN type=kotlin.Nothing from='<anonymous>(): Unit'
+          CALLABLE_REFERENCE '<anonymous>(): Unit' type=() -> kotlin.Unit operator=LAMBDA
+    FUN public fun <get-test2>(): () -> kotlin.Unit
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='<get-test2>(): () -> Unit'
+          GET_BACKING_FIELD 'test2: () -> Unit' type=() -> kotlin.Unit operator=null

compiler/testData/ir/irText/lambdas/multipleImplicitReceivers.txt

@@ -11,7 +11,7 @@ FILE /multipleImplicitReceivers.kt
         INSTANCE_INITIALIZER_CALL classDescriptor='B'
   CLASS INTERFACE IFoo
     PROPERTY public open val A.foo: B
-      PROPERTY_GETTER public open fun A.<get-foo>(): B
+      FUN public open fun A.<get-foo>(): B
         BLOCK_BODY
           RETURN type=kotlin.Nothing from='<get-foo>() on A: B'
             GET_OBJECT 'B' type=B