JS: translate when against enum to JsSwitch when possible

compiler/testData/codegen/box/when/enumOptimization/bigEnum.kt

@@ -1,4 +1,8 @@
 // WITH_RUNTIME
+// CHECK_CASES_COUNT: function=bar1 count=6
+// CHECK_IF_COUNT: function=bar1 count=0
+// CHECK_CASES_COUNT: function=bar2 count=6
+// CHECK_IF_COUNT: function=bar2 count=0
 
 import kotlin.test.assertEquals
 

compiler/testData/codegen/box/when/enumOptimization/duplicatingItems.kt

@@ -1,4 +1,6 @@
 // WITH_RUNTIME
+// CHECK_CASES_COUNT: function=bar count=3
+// CHECK_IF_COUNT: function=bar count=0
 
 import kotlin.test.assertEquals
 

compiler/testData/codegen/box/when/enumOptimization/enumInsideClassObject.kt

@@ -1,4 +1,6 @@
 // WITH_RUNTIME
+// CHECK_CASES_COUNT: function=foo count=3
+// CHECK_IF_COUNT: function=foo count=0
 
 import kotlin.test.assertEquals
 

compiler/testData/codegen/box/when/enumOptimization/expression.kt

@@ -1,4 +1,8 @@
 // WITH_RUNTIME
+// CHECK_CASES_COUNT: function=bar1 count=3
+// CHECK_IF_COUNT: function=bar1 count=0
+// CHECK_CASES_COUNT: function=bar2 count=4
+// CHECK_IF_COUNT: function=bar2 count=0
 
 import kotlin.test.assertEquals
 

compiler/testData/codegen/box/when/enumOptimization/functionLiteralInTopLevel.kt

@@ -1,3 +1,6 @@
+// CHECK_CASES_COUNT: function=box$lambda count=0
+// CHECK_IF_COUNT: function=box$lambda count=1
+
 enum class Season {
     WINTER,
     SPRING,

compiler/testData/codegen/box/when/enumOptimization/kt14597.kt

@@ -1,3 +1,6 @@
+// CHECK_CASES_COUNT: function=box count=6
+// CHECK_IF_COUNT: function=box count=1
+
 enum class En { A, B, С }
 
 fun box(): String {

compiler/testData/codegen/box/when/enumOptimization/kt14597_full.kt

@@ -1,3 +1,6 @@
+// CHECK_CASES_COUNT: function=box count=18
+// CHECK_IF_COUNT: function=box count=3
+
 enum class En { A, B, С }
 
 fun box(): String {

compiler/testData/codegen/box/when/enumOptimization/kt14802.kt

@@ -1,3 +1,6 @@
+// CHECK_CASES_COUNT: function=crash count=2
+// CHECK_IF_COUNT: function=crash count=1
+
 class EncapsulatedEnum<T : Enum<T>>(val value: T)
 
 enum class MyEnum(val value: String) {

compiler/testData/codegen/box/when/enumOptimization/kt15806.kt

@@ -1,3 +1,5 @@
+// CHECK_CASES_COUNT: function=doTheThing count=2
+// CHECK_IF_COUNT: function=doTheThing count=2
 
 private fun Any?.doTheThing(): String {
     when (this) {

compiler/testData/codegen/box/when/enumOptimization/manyWhensWithinClass.kt

@@ -1,4 +1,8 @@
 // WITH_RUNTIME
+// CHECK_CASES_COUNT: function=bar1_u51tkt$ count=3
+// CHECK_IF_COUNT: function=bar1_u51tkt$ count=0
+// CHECK_CASES_COUNT: function=A$bar2$lambda count=3
+// CHECK_IF_COUNT: function=A$bar2$lambda count=0
 
 import kotlin.test.assertEquals
 

compiler/testData/codegen/box/when/enumOptimization/nonConstantEnum.kt

@@ -1,3 +1,6 @@
+// CHECK_CASES_COUNT: function=box count=0
+// CHECK_IF_COUNT: function=box count=1
+
 enum class Season {
     WINTER,
     SPRING,

compiler/testData/codegen/box/when/enumOptimization/nullability.kt

@@ -1,4 +1,8 @@
 // WITH_RUNTIME
+// CHECK_CASES_COUNT: function=foo1 count=0
+// CHECK_IF_COUNT: function=foo1 count=2
+// CHECK_CASES_COUNT: function=foo2 count=0
+// CHECK_IF_COUNT: function=foo2 count=2
 
 import kotlin.test.assertEquals
 

compiler/testData/codegen/box/when/enumOptimization/nullableEnum.kt

@@ -1,3 +1,6 @@
+// CHECK_CASES_COUNT: function=test count=0
+// CHECK_IF_COUNT: function=test count=3
+
 enum class E {
     A,
     B

compiler/testData/codegen/box/when/enumOptimization/subjectAny.kt

@@ -1,4 +1,6 @@
 // WITH_RUNTIME
+// CHECK_CASES_COUNT: function=foo count=0
+// CHECK_IF_COUNT: function=foo count=3
 
 import kotlin.test.assertEquals
 

compiler/testData/codegen/box/when/enumOptimization/withoutElse.kt

@@ -1,4 +1,8 @@
 // WITH_RUNTIME
+// CHECK_CASES_COUNT: function=bar1 count=3
+// CHECK_IF_COUNT: function=bar1 count=0
+// CHECK_CASES_COUNT: function=bar2 count=4
+// CHECK_IF_COUNT: function=bar2 count=0
 
 import kotlin.test.assertEquals