Perform bytecode optimisations for inline classes

#KT-23742 Fixed

compiler/testData/codegen/bytecodeText/inlineClasses/boxInlineClassInsideElvisWithNullConstant.kt

@@ -6,7 +6,7 @@ fun f() {
     val unull = UInt(1) ?: null
 }
 
-// 1 INVOKESTATIC UInt\$Erased.box
+// 0 INVOKESTATIC UInt\$Erased.box
 // 0 INVOKEVIRTUAL UInt.unbox
 
 // 0 valueOf

compiler/testData/codegen/bytecodeText/inlineClasses/boxUnboxInsideLambdaAsLastExpression.kt

@@ -12,8 +12,8 @@ fun test(x: UInt?, y: UInt) {
     }
 }
 
-// 2 INVOKESTATIC UInt\$Erased.box
-// 3 INVOKEVIRTUAL UInt.unbox
+// 0 INVOKESTATIC UInt\$Erased.box
+// 1 INVOKEVIRTUAL UInt.unbox
 
 // 0 valueOf
 // 0 intValue

compiler/testData/codegen/bytecodeText/inlineClasses/boxUnboxOnInlinedParameters.kt

@@ -9,17 +9,17 @@ fun <T> T.idExtension(): T = this
 inline fun <T> T.inlinedIdExtension(): T = this
 
 fun test(f: Foo) {
-    inlinedId(f) // box
+    inlinedId(f)
     inlinedId(f).idExtension() // box
 
-    f.inlinedIdExtension() // box
+    f.inlinedIdExtension()
 
     val a = inlinedId(f).idExtension() // box unbox
-    val b = inlinedId(f).inlinedIdExtension() // box unbox
+    val b = inlinedId(f).inlinedIdExtension()
 }
 
-// 5 INVOKESTATIC Foo\$Erased.box
-// 2 INVOKEVIRTUAL Foo.unbox
+// 2 INVOKESTATIC Foo\$Erased.box
+// 1 INVOKEVIRTUAL Foo.unbox
 
 // 0 valueOf
 // 0 intValue

compiler/testData/codegen/bytecodeText/inlineClasses/inlineClassBoxingOnAssignment.kt

@@ -7,39 +7,39 @@ inline class InlineNullableReference(val a: Any?)
 
 fun test1(a: InlineNotNullPrimitive) {
     val a0 = a
-    val a1: Any = a // box
-    val a2: Any? = a // box
+    val a1: Any = a
+    val a2: Any? = a
     val a3: InlineNotNullPrimitive = a
-    val a4: InlineNotNullPrimitive? = a // box
+    val a4: InlineNotNullPrimitive? = a
 }
 
 fun test2(b: InlineNullablePrimitive) {
     val b0 = b
-    val b1: Any = b // box
-    val b2: Any? = b // box
+    val b1: Any = b
+    val b2: Any? = b
     val b3: InlineNullablePrimitive = b
-    val b4: InlineNullablePrimitive? = b // box
+    val b4: InlineNullablePrimitive? = b
 }
 
 fun test3(c: InlineNotNullReference) {
     val c0 = c
-    val c1: Any = c // box
-    val c2: Any? = c // box
+    val c1: Any = c
+    val c2: Any? = c
     val c3: InlineNotNullReference = c
     val c4: InlineNotNullReference? = c
 }
 
 fun test4(d: InlineNullableReference) {
     val d0 = d
-    val d1: Any = d // box
-    val d2: Any? = d // box
+    val d1: Any = d
+    val d2: Any? = d
     val d3: InlineNullableReference = d
-    val d4: InlineNullableReference? = d // box
+    val d4: InlineNullableReference? = d
 }
 
-// 3 INVOKESTATIC InlineNotNullPrimitive\$Erased.box
-// 3 INVOKESTATIC InlineNullablePrimitive\$Erased.box
-// 2 INVOKESTATIC InlineNotNullReference\$Erased.box
-// 3 INVOKESTATIC InlineNullableReference\$Erased.box
+// 0 INVOKESTATIC InlineNotNullPrimitive\$Erased.box
+// 0 INVOKESTATIC InlineNullablePrimitive\$Erased.box
+// 0 INVOKESTATIC InlineNotNullReference\$Erased.box
+// 0 INVOKESTATIC InlineNullableReference\$Erased.box
 
 // 0 valueOf

compiler/testData/codegen/bytecodeText/inlineClasses/uIntArraySwapBoxing.kt

@@ -16,8 +16,8 @@ fun UIntArray.swap(i: Int, j: Int) {
     this[j] = this[i].also { this[i] = this[j] }
 }
 
-// 2 INVOKEVIRTUAL UInt.unbox
-// 1 INVOKESTATIC UInt\$Erased.box
+// 0 INVOKEVIRTUAL UInt.unbox
+// 0 INVOKESTATIC UInt\$Erased.box
 
 // 0 intValue
 // 0 valueOf