[IR] Support const optimizations for JS backend

compiler/testData/codegen/box/involvesIrInterpreter/intrinsicConst/constTrimIndent.kt

@@ -1,6 +1,7 @@
 // !LANGUAGE: +IntrinsicConstEvaluation
 // TARGET_BACKEND: JVM_IR
-// IGNORE_BACKEND_K1: JVM_IR
+// TARGET_BACKEND: JS_IR
+// IGNORE_BACKEND_K1: JVM_IR, JS_IR, JS_IR_ES6
 // WITH_STDLIB
 fun <T> T.id() = this
 

compiler/testData/codegen/box/involvesIrInterpreter/intrinsicConst/constTrimMargin.kt

@@ -1,6 +1,7 @@
 // !LANGUAGE: +IntrinsicConstEvaluation
 // TARGET_BACKEND: JVM_IR
-// IGNORE_BACKEND_K1: JVM_IR
+// TARGET_BACKEND: JS_IR
+// IGNORE_BACKEND_K1: JVM_IR, JS_IR, JS_IR_ES6
 // WITH_STDLIB
 fun <T> T.id() = this
 

compiler/testData/codegen/box/involvesIrInterpreter/intrinsicConst/enumName.kt

@@ -1,6 +1,7 @@
 // !LANGUAGE: +IntrinsicConstEvaluation
 // TARGET_BACKEND: JVM_IR
-// IGNORE_BACKEND_K1: JVM_IR
+// TARGET_BACKEND: JS_IR
+// IGNORE_BACKEND_K1: JVM_IR, JS_IR, JS_IR_ES6
 fun <T> T.id() = this
 
 enum class EnumClass {

compiler/testData/codegen/box/involvesIrInterpreter/intrinsicConst/enumNameWithInit.kt

@@ -1,5 +1,6 @@
 // !LANGUAGE: +IntrinsicConstEvaluation
 // TARGET_BACKEND: JVM_IR
+// TARGET_BACKEND: JS_IR
 
 fun <T> T.id() = this
 

compiler/testData/codegen/box/involvesIrInterpreter/intrinsicConst/equals_after.kt

@@ -1,5 +1,7 @@
 // !LANGUAGE: +IntrinsicConstEvaluation
 // TARGET_BACKEND: JVM_IR
+// TARGET_BACKEND: JS_IR
+
 fun <T> T.id() = this
 
 const val trueVal = <!EVALUATED("true")!>true<!>

compiler/testData/codegen/box/involvesIrInterpreter/intrinsicConst/kCallableName.kt

@@ -1,6 +1,8 @@
 // !LANGUAGE: +IntrinsicConstEvaluation
 // TARGET_BACKEND: JVM_IR
-// IGNORE_BACKEND_K1: JVM_IR
+// TARGET_BACKEND: JS_IR
+// IGNORE_BACKEND_K1: JVM_IR, JS_IR, JS_IR_ES6
+
 fun <T> T.id() = this
 
 class A(val OK: Int, val somePropertyWithLongName: String) {

compiler/testData/codegen/box/involvesIrInterpreter/intrinsicConst/kCallableNameWithSideEffect.kt

@@ -1,15 +1,18 @@
 // !LANGUAGE: +IntrinsicConstEvaluation
 // TARGET_BACKEND: JVM_IR
+// TARGET_BACKEND: JS_IR
 // WITH_STDLIB
 
 fun <T> T.id() = this
 
+fun someSideEffect(value: Any?) = {}
+
 class A {
     val a = ""
     fun b() = ""
 
     init {
-        println("A init")
+        someSideEffect("A init")
     }
 
     fun test() {

compiler/testData/codegen/box/involvesIrInterpreter/intrinsicConst/kt53272.kt

@@ -1,6 +1,7 @@
 // !LANGUAGE: +IntrinsicConstEvaluation
 // TARGET_BACKEND: JVM_IR
-// IGNORE_BACKEND_K1: JVM_IR
+// TARGET_BACKEND: JS_IR
+// IGNORE_BACKEND_K1: JVM_IR, JS_IR, JS_IR_ES6
 
 // FILE: 1.kt
 

compiler/testData/codegen/box/involvesIrInterpreter/intrinsicConst/kt58717.kt

@@ -1,5 +1,7 @@
 // !LANGUAGE: +IntrinsicConstEvaluation
 // TARGET_BACKEND: JVM_IR
+// TARGET_BACKEND: JS_IR
+
 var result = "Fail"
 
 object O {