[FIR] Desugar increment/decrement in body resolve phase

The expression needs to be resolved first to determine if there is a
receiver that needs to be extracted to a temporary variable. Also, the
special case for prefix increment/decrement on local variable without
delegates requires resolution to check if the variable is local.

^KT-56771 Fixed
^KT-56659 Fixed

compiler/testData/codegen/box/intrinsics/prefixIncDec.kt

@@ -1,3 +1,6 @@
+// IGNORE_BACKEND_K2: ANY
+// Behavior changed in K2, see KT-42077
+
 public var inc: Int = 0
 
 public var propInc: Int = 0
@@ -26,4 +29,4 @@ fun box(): String {
     if (propDec != -1) return "fail in prefix decrement: ${propDec} != -1"
 
     return "OK"
-}
+}

compiler/testData/codegen/box/intrinsics/prefixIncDecFir.kt

@@ -0,0 +1,34 @@
+// IGNORE_BACKEND_K1: ANY
+// Behavior changed in K2, see KT-42077
+// IGNORE_BACKEND: WASM
+// SKIP_NODE_JS
+
+public var inc: Int = 0
+
+public var propInc: Int = 0
+    get() {++inc; return field}
+    set(a: Int) {
+        ++inc
+        field = a
+    }
+
+public var dec: Int = 0
+
+public var propDec: Int = 0
+    get() { --dec; return field}
+    set(a: Int) {
+        --dec
+        field = a
+    }
+
+fun box(): String {
+    ++propInc
+    if (inc != 2) return "fail in prefix increment: ${inc} != 2"
+    if (propInc != 1) return "fail in prefix increment: ${propInc} != 1"
+
+    --propDec
+    if (dec != -2) return "fail in prefix decrement: ${dec} != -2"
+    if (propDec != -1) return "fail in prefix decrement: ${propDec} != -1"
+
+    return "OK"
+}

compiler/testData/codegen/box/statics/incInClassObject.kt

@@ -1,3 +1,6 @@
+// IGNORE_BACKEND_K2: ANY
+// Behavior changed in K2, see KT-42077
+
 class A {
     companion object {
         private var r: Int = 1;
@@ -70,4 +73,4 @@ fun box() : String {
     if (p4 != 3 || A.holder != "getR4setR4:getR4setR4getR4getR4") return "fail 4:  $p4 ${A.holder}"
 
     return "OK"
-}
+}

compiler/testData/codegen/box/statics/incInClassObjectFir.kt

@@ -0,0 +1,78 @@
+// IGNORE_BACKEND_K1: ANY
+// Behavior changed in K2, see KT-42077
+// IGNORE_BACKEND: WASM
+// SKIP_NODE_JS
+
+class A {
+    companion object {
+        private var r: Int = 1;
+
+        fun test(): Int {
+            r++
+            ++r
+            return r
+        }
+
+        var holder: String = ""
+
+        var r2: Int = 1
+            get() {
+                holder += "getR2"
+                return field
+            }
+
+        fun test2() : Int {
+            r2++
+            ++r2
+            return r2
+        }
+
+        var r3: Int = 1
+            set(p: Int) {
+                holder += "setR3"
+                field = p
+            }
+
+        fun test3() : Int {
+            r3++
+            ++r3
+            return r3
+        }
+
+        var r4: Int = 1
+            get() {
+                holder += "getR4"
+                return field
+            }
+            set(p: Int) {
+                holder += "setR4"
+                field = p
+            }
+
+        fun test4() : Int {
+            r4++
+            holder += ":"
+            ++r4
+            return r4
+        }
+    }
+}
+
+fun box() : String {
+    val p = A.test()
+    if (p != 3) return "fail 1: $p"
+
+    val p2 = A.test2()
+    var holderValue = A.holder
+    if (p2 != 3 || holderValue != "getR2getR2getR2") return "fail 2:  $p2 ${holderValue}"
+
+    A.holder = ""
+    val p3 = A.test3()
+    if (p3 != 3 || A.holder != "setR3setR3") return "fail 3:  $p3 ${A.holder}"
+
+    A.holder = ""
+    val p4 = A.test4()
+    if (p4 != 3 || A.holder != "getR4setR4:getR4setR4getR4") return "fail 4:  $p4 ${A.holder}"
+
+    return "OK"
+}

compiler/testData/codegen/box/statics/incInObject.kt

@@ -1,3 +1,6 @@
+// IGNORE_BACKEND_K2: ANY
+// Behavior changed in K2, see KT-42077
+
 object A {
     private var r: Int = 1;
 
@@ -68,4 +71,4 @@ fun box() : String {
     if (p4 != 3 || A.holder != "getR4setR4:getR4setR4getR4getR4") return "fail 4:  $p4 ${A.holder}"
 
     return "OK"
-}
+}

compiler/testData/codegen/box/statics/incInObjectFir.kt

@@ -0,0 +1,76 @@
+// IGNORE_BACKEND_K1: ANY
+// Behavior changed in K2, see KT-42077
+// IGNORE_BACKEND: WASM
+// SKIP_NODE_JS
+
+object A {
+    private var r: Int = 1;
+
+    fun test() : Int {
+        r++
+        ++r
+        return r
+    }
+
+    var holder: String = ""
+
+    var r2: Int = 1
+        get() {
+            holder += "getR2"
+            return field
+        }
+
+    fun test2() : Int {
+        r2++
+        ++r2
+        return r2
+    }
+
+    var r3: Int = 1
+        set(p: Int) {
+            holder += "setR3"
+            field = p
+        }
+
+    fun test3() : Int {
+        r3++
+        ++r3
+        return r3
+    }
+
+    var r4: Int = 1
+        get() {
+            holder += "getR4"
+            return field
+        }
+        set(p: Int) {
+            holder += "setR4"
+            field = p
+        }
+
+    fun test4() : Int {
+        r4++
+        holder += ":"
+        ++r4
+        return r4
+    }
+}
+
+fun box() : String {
+    val p = A.test()
+    if (p != 3) return "fail 1: $p"
+
+    val p2 = A.test2()
+    val holderValue = A.holder
+    if (p2 != 3 || holderValue != "getR2getR2getR2") return "fail 2:  $p2 ${holderValue}"
+
+    A.holder = ""
+    val p3 = A.test3()
+    if (p3 != 3 || A.holder != "setR3setR3") return "fail 3:  $p3 ${A.holder}"
+
+    A.holder = ""
+    val p4 = A.test4()
+    if (p4 != 3 || A.holder != "getR4setR4:getR4setR4getR4") return "fail 4:  $p4 ${A.holder}"
+
+    return "OK"
+}