KT-2633 Support multiple assignment in JVM Back-end

#KT-2633 Fixed

compiler/testData/codegen/multiDecl/ComplexInitializer.kt

@@ -0,0 +1,13 @@
+class A {
+    fun component1() = 1
+    fun component2() = 2
+
+}
+
+fun A.getA() = this
+
+fun box() : String {
+    val (a, b) = A().getA().getA()
+
+    return if (a == 1 && b == 2) "OK" else "fail"
+}

compiler/testData/codegen/multiDecl/SimpleVals.kt

@@ -0,0 +1,9 @@
+class A {
+    fun component1() = 1
+    fun component2() = 2
+}
+
+fun box() : String {
+    val (a, b) = A()
+    return if (a == 1 && b == 2) "OK" else "fail"
+}

compiler/testData/codegen/multiDecl/SimpleValsExtensions.kt

@@ -0,0 +1,10 @@
+class A {
+}
+
+fun A.component1() = 1
+fun A.component2() = 2
+
+fun box() : String {
+    val (a, b) = A()
+    return if (a == 1 && b == 2) "OK" else "fail"
+}

compiler/testData/codegen/multiDecl/SimpleVarsExtensions.kt

@@ -0,0 +1,10 @@
+class A {
+    fun component1() = 1
+    fun component2() = 2
+}
+
+fun box() : String {
+    var (a, b) = A()
+    a = b
+    return if (a == 2 && b == 2) "OK" else "fail"
+}

compiler/testData/codegen/multiDecl/ValCapturedInFunctionLiteral.kt

@@ -0,0 +1,13 @@
+class A {
+    fun component1() = 1
+    fun component2() = 2
+}
+
+fun box() : String {
+    val (a, b) = A()
+
+    val run = {
+        a
+    }
+    return if (run() == 1 && b == 2) "OK" else "fail"
+}

compiler/testData/codegen/multiDecl/ValCapturedInLocalFunction.kt

@@ -0,0 +1,13 @@
+class A {
+    fun component1() = 1
+    fun component2() = 2
+}
+
+fun box() : String {
+    val (a, b) = A()
+
+    fun run(): Int {
+        return a
+    }
+    return if (run() == 1 && b == 2) "OK" else "fail"
+}

compiler/testData/codegen/multiDecl/ValCapturedInObjectLiteral.kt

@@ -0,0 +1,16 @@
+class A {
+    fun component1() = 1
+    fun component2() = 2
+}
+
+
+fun box() : String {
+    val (a, b) = A()
+
+    val local = object {
+        public fun run() : Int {
+            return a
+        }
+    }
+    return if (local.run() == 1 && b == 2) "OK" else "fail"
+}

compiler/testData/codegen/multiDecl/VarCapturedInFunctionLiteral.kt

@@ -0,0 +1,15 @@
+class A {
+    fun component1() = 1
+    fun component2() = 2
+}
+
+
+fun box() : String {
+    var (a, b) = A()
+
+    val local = {
+        a = 3
+    }
+    local()
+    return if (a == 3 && b == 2) "OK" else "fail"
+}

compiler/testData/codegen/multiDecl/VarCapturedInLocalFunction.kt

@@ -0,0 +1,15 @@
+class A {
+}
+
+fun A.component1() = 1
+fun A.component2() = 2
+
+fun box() : String {
+    var (a, b) = A()
+
+    fun local() {
+        a = 3
+    }
+    local()
+    return if (a == 3 && b == 2) "OK" else "fail"
+}

compiler/testData/codegen/multiDecl/VarCapturedInObjectLiteral.kt

@@ -0,0 +1,17 @@
+class A {
+    fun component1() = 1
+    fun component2() = 2
+}
+
+
+fun box() : String {
+    var (a, b) = A()
+
+    val local = object {
+        public fun run() {
+            a = 3
+        }
+    }
+    local.run()
+    return if (a == 3 && b == 2) "OK" else "fail"
+}