Drop identityEquals from builtins, compiler and tests.

js/js.translator/src/org/jetbrains/kotlin/js/translate/intrinsic/functions/factories/TopLevelFIF.java

@@ -52,17 +52,6 @@ public final class TopLevelFIF extends CompositeFIF {
     public static final DescriptorPredicate EQUALS_IN_ANY = pattern("kotlin", "Any", "equals");
     @NotNull
     public static final KotlinFunctionIntrinsic KOTLIN_EQUALS = new KotlinFunctionIntrinsic("equals");
-    @NotNull
-    public static final FunctionIntrinsic IDENTITY_EQUALS = new FunctionIntrinsic() {
-        @NotNull
-        @Override
-        public JsExpression apply(
-                @Nullable JsExpression receiver, @NotNull List<JsExpression> arguments, @NotNull TranslationContext context
-        ) {
-            assert arguments.size() == 1 : "Unexpected argument size for kotlin.identityEquals: " + arguments.size();
-            return new JsBinaryOperation(JsBinaryOperator.REF_EQ, receiver, arguments.get(0));
-        }
-    };
 
     @NotNull
     public static final DescriptorPredicate HASH_CODE_IN_ANY = pattern("kotlin", "Any", "hashCode");
@@ -141,7 +130,6 @@ public final class TopLevelFIF extends CompositeFIF {
         add(EQUALS_IN_ANY, KOTLIN_EQUALS);
         add(pattern("kotlin", "toString").isExtensionOf(FQ_NAMES.any.asString()), TO_STRING);
         add(pattern("kotlin", "equals").isExtensionOf(FQ_NAMES.any.asString()), KOTLIN_EQUALS);
-        add(pattern("kotlin", "identityEquals").isExtensionOf("kotlin.Any"), IDENTITY_EQUALS);
         add(HASH_CODE_IN_ANY, KOTLIN_HASH_CODE);
         add(pattern(NamePredicate.PRIMITIVE_NUMBERS, "equals"), KOTLIN_EQUALS);
         add(pattern("String|Boolean|Char|Number.equals"), KOTLIN_EQUALS);

js/js.translator/testData/enum/cases/standardMethods.kt

@@ -24,7 +24,7 @@ fun box(): String {
     val ok2 = Simple.valueOf("OK")
     if (!ok2.equals(ok)) return "ok2 not equal ok"
     if (ok2.hashCode() != ok.hashCode()) return "hash(ok2) not equal hash(ok)"
-    if (!ok2.identityEquals(ok)) return "ok2 not identity equal ok"
+    if (ok2 !== ok) return "ok2 not identity equal ok"
 
 
     if (EmptyEnum.values().size != 0) return "EmptyEnum.values().size != 0"

js/js.translator/testData/expression/function/cases/manglingAnyMethods.kt

@@ -5,13 +5,13 @@ public fun hashCode(): Int = 0
 public fun toString(): String = ""
 
 public class PublicClass {
-    override fun equals(a: Any?): Boolean = this.identityEquals(a)
+    override fun equals(a: Any?): Boolean = this === a
     override fun hashCode(): Int = 0
     override fun toString(): String = "PublicClass"
 }
 
 internal class InternalClass {
-    override fun equals(a: Any?): Boolean = this.identityEquals(a)
+    override fun equals(a: Any?): Boolean = this === a
     override fun hashCode(): Int = 1
     override fun toString(): String = "InternalClass"
 
@@ -22,7 +22,7 @@ internal class InternalClass {
 }
 
 private class PrivateClass {
-    override fun equals(a: Any?): Boolean = this.identityEquals(a)
+    override fun equals(a: Any?): Boolean = this === a
     override fun hashCode(): Int = 2
     override fun toString(): String = "InternalClass"
 

js/js.translator/testData/expression/identityEquals/cases/identityEqualsMethod.kt

@@ -5,17 +5,17 @@ class X
 fun box(): String {
     val a = X()
     val b = X()
-    if (!a.identityEquals(a)) return "a !== a"
-    if (a.identityEquals(b)) return "X() === X()"
+    if (a !== a) return "a !== a"
+    if (a === b) return "X() === X()"
     val c = a
-    if (!c.identityEquals(a)) return "c = a; c !== a"
+    if (c !== a) return "c = a; c !== a"
 
-    if (X().identityEquals(a)) return "X() identityEquals a"
+    if (X() === a) return "X() === a"
 
-    val t = !(X().identityEquals(a))
-    if (!t) return "t = !(X() identityEquals a); t == false"
+    val t = !(X() === a)
+    if (!t) return "t = !(X() === a); t == false"
 
-    val f = !!(X().identityEquals(a))
-    if (f) return "f = !!(X() identityEquals null); f == true"
+    val f = !!(X() === a)
+    if (f) return "f = !!(X() === null); f == true"
     return "OK";
 }

js/js.translator/testData/expression/identityEquals/cases/identityEqualsMethodForPrimitives.kt

@@ -1,13 +1,13 @@
 package foo
 
 fun box(): String {
-    if (!null.identityEquals(null)) return "null !== null"
-    if (!("ab".identityEquals("ab"))) return "ab !== ab"
-    if (("ab".identityEquals("a"))) return "ab === a"
+    if (null !== null) return "null !== null"
+    if (!("ab" === "ab")) return "ab !== ab"
+    if ("ab" === "a") return "ab === a"
 
-    if ("0".identityEquals(0)) return "'0' === 0"
-    if (!(0.identityEquals(0))) return "0 !== 0"
-    if (0.identityEquals(1)) return "0 === 1"
+    if ("0" as Any === 0) return "'0' === 0"
+    if (!(0 === 0)) return "0 !== 0"
+    if (0 === 1) return "0 === 1"
 
 
     return "OK";

js/js.translator/testData/inheritance/cases/overrideAnyMethods.kt

@@ -17,7 +17,7 @@ fun String.myHashCode(): Int {
 class Foo(val name: String) {
     override fun equals(other: Any?): Boolean {
         if (other is Foo) return name == other.name
-        return this.identityEquals(other)
+        return this === other
     }
     override fun hashCode(): Int = name.myHashCode()
     override fun toString(): String = "Foo($name)"

js/js.translator/testData/inline/cases/identityEquals.kt

@@ -3,11 +3,11 @@ package foo
 class A
 
 inline fun compare1(a: A): Boolean {
-    return a.identityEquals(a)
+    return a === a
 }
 
 inline fun compare2(a1: A, a2: A): Boolean {
-    return a1.identityEquals(a2)
+    return a1 === a2
 }
 
 fun box(): String {