JS: fix inlining of callable references

js/js.translator/src/org/jetbrains/kotlin/js/translate/reference/CallableReferenceTranslator.kt

@@ -22,6 +22,9 @@ import org.jetbrains.kotlin.descriptors.PropertyDescriptor
 import org.jetbrains.kotlin.descriptors.ValueParameterDescriptor
 import org.jetbrains.kotlin.descriptors.Visibilities
 import org.jetbrains.kotlin.js.backend.ast.*
+import org.jetbrains.kotlin.js.backend.ast.metadata.SideEffectKind
+import org.jetbrains.kotlin.js.backend.ast.metadata.isCallableReference
+import org.jetbrains.kotlin.js.backend.ast.metadata.sideEffects
 import org.jetbrains.kotlin.js.translate.callTranslator.CallTranslator
 import org.jetbrains.kotlin.js.translate.context.Namer
 import org.jetbrains.kotlin.js.translate.context.TranslationContext
@@ -226,7 +229,10 @@ object CallableReferenceTranslator {
         val nameLiteral = context.program().getStringLiteral(name)
         val invokeName = Namer.FUNCTION_CALLABLE_REF
         val invokeFun = JsNameRef(invokeName, Namer.kotlinObject())
+        invokeFun.sideEffects = SideEffectKind.PURE
         val invocation = JsInvocation(invokeFun, nameLiteral, function)
+        invocation.isCallableReference = true
+        invocation.sideEffects = SideEffectKind.PURE
         return invocation
     }
 }

js/js.translator/testData/box/inlineMultiModule/callableReference.kt

@@ -14,7 +14,7 @@ import utils.*
 
 // CHECK_CONTAINS_NO_CALLS: test except=imul
 
-internal fun multiplyBy2(x: Int): Int = x * 2
+internal inline fun multiplyBy2(x: Int): Int = x * 2
 
 internal fun test(x: Int): Int = apply(x, ::multiplyBy2)
 

js/js.translator/testData/box/inlineStdlib/callableRefToFunInCurrentModule.kt

@@ -3,7 +3,7 @@ package foo
 // CHECK_NOT_CALLED_IN_SCOPE: scope=test function=even
 // CHECK_NOT_CALLED_IN_SCOPE: scope=test function=filter_azvtw4$
 
-internal fun even(x: Int) = x % 2 == 0
+internal inline fun even(x: Int) = x % 2 == 0
 
 internal fun test(a: List<Int>) = a.filter(::even)