Drop identityEquals from builtins, compiler and tests.

compiler/testData/codegen/box/binaryOp/kt6747_identityEquals.kt

@@ -2,7 +2,6 @@ class Test {
     fun check(a: Any?): String {
         if (this === a) return "Fail 1"
         if (!(this !== a)) return "Fail 2"
-        if (this.identityEquals(a)) return "Fail 3"
         return "OK"
     }
 }

compiler/testData/codegen/box/casts/as.kt

@@ -4,5 +4,5 @@ fun box(): String {
 	val r = object : Runnable {
 		override fun run() {}
 	}
-	return if (foo(r).identityEquals(r)) "OK" else "Fail"
+	return if (foo(r) === r) "OK" else "Fail"
 }

compiler/testData/codegen/box/casts/asSafe.kt

@@ -4,5 +4,5 @@ fun box(): String {
 	val r = object : Runnable {
 		override fun run() {}
 	}
-	return if (foo(r).identityEquals(r)) "OK" else "Fail"
+	return if (foo(r) === r) "OK" else "Fail"
 }

compiler/testData/codegen/box/controlStructures/kt1441.kt

@@ -7,10 +7,10 @@ class Foo {
 fun box() : String {
   val a = Foo()
   val b = Foo()
-  if (!a.identityEquals(a)) return "fail 1"
-  if (!b.identityEquals(b)) return "fail 2"
-  if (b.identityEquals(a)) return "fail 3"
-  if (a.identityEquals(b)) return "fail 4"
+  if (a !== a) return "fail 1"
+  if (b !== b) return "fail 2"
+  if (b === a) return "fail 3"
+  if (a === b) return "fail 4"
   if( a !=b ) return "fail5"
   return "OK"
 }

compiler/testData/codegen/box/javaInterop/objectMethods/cloneCallsConstructor.kt

@@ -6,6 +6,6 @@ fun box(): String {
     val a = A(42)
     val b = a.clone()
     if (b != a) return "Fail equals"
-    if (b.identityEquals(a)) return "Fail identity"
+    if (b === a) return "Fail identity"
     return "OK"
 }

compiler/testData/codegen/box/javaInterop/objectMethods/cloneCallsSuper.kt

@@ -6,6 +6,6 @@ fun box(): String {
     val a = A(42)
     val b = a.clone()
     if (a != b) return "Fail equals"
-    if (a.identityEquals(b)) return "Fail identity"
+    if (a === b) return "Fail identity"
     return "OK"
 }

compiler/testData/codegen/box/javaInterop/objectMethods/cloneCallsSuperAndModifies.kt

@@ -10,7 +10,7 @@ fun box(): String {
     val a = A(42)
     val b = a.clone()
     if (a == b) return "Fail: $a == $b"
-    if (a.identityEquals(b)) return "Fail: $a identityEquals $b"
+    if (a === b) return "Fail: $a === $b"
     if (b.x != 239) return "Fail: b.x = ${b.x}"
     return "OK"
 }

compiler/testData/codegen/box/javaInterop/objectMethods/cloneHashSet.kt

@@ -7,6 +7,6 @@ fun box(): String {
     a.add("prosper")
     val b = a.clone()
     if (a != b) return "Fail equals"
-    if (a.identityEquals(b)) return "Fail identity"
+    if (a === b) return "Fail identity"
     return "OK"
 }

compiler/testData/codegen/box/javaInterop/objectMethods/cloneHierarchy.kt

@@ -25,8 +25,8 @@ fun box(): String {
 
     if (c.s != d.s) return "Fail s: ${d.s}"
     if (c.l != d.l) return "Fail l: ${d.l}"
-    if (c.l.identityEquals(d.l)) return "Fail list identity"
-    if (c.identityEquals(d)) return "Fail identity"
+    if (c.l === d.l) return "Fail list identity"
+    if (c === d) return "Fail identity"
 
     return "OK"
 }

compiler/testData/codegen/box/javaInterop/objectMethods/cloneableClassWithoutClone.kt

@@ -6,6 +6,6 @@ fun box(): String {
     val a = A("OK")
     val b = a.externalClone()
     if (a != b) return "Fail equals"
-    if (a.identityEquals(b)) return "Fail identity"
+    if (a === b) return "Fail identity"
     return b.s
 }

compiler/testData/codegen/box/operatorConventions/assignmentOperations.kt

@@ -13,23 +13,23 @@ fun box(): String {
   val a = original
 
   a += 1
-  if (!(a.identityEquals(original))) return "Fail 1: $a !== $original"
+  if (a !== original) return "Fail 1: $a !== $original"
   if (a.x != 1) return "Fail 2: ${a.x} != 1"
 
   a -= 2
-  if (!(a.identityEquals(original))) return "Fail 3: $a !== $original"
+  if (a !== original) return "Fail 3: $a !== $original"
   if (a.x != -1) return "Fail 4: ${a.x} != -1"
 
   a *= -10
-  if (!(a.identityEquals(original))) return "Fail 5: $a !== $original"
+  if (a !== original) return "Fail 5: $a !== $original"
   if (a.x != 10) return "Fail 6: ${a.x} != 10"
 
   a /= 3
-  if (!(a.identityEquals(original))) return "Fail 7: $a !== $original"
+  if (a !== original) return "Fail 7: $a !== $original"
   if (a.x != 3) return "Fail 8: ${a.x} != 3"
 
   a %= 2
-  if (!(a.identityEquals(original))) return "Fail 9: $a !== $original"
+  if (a !== original) return "Fail 9: $a !== $original"
   if (a.x != 1) return "Fail 10: ${a.x} != 1"
 
   return "OK"

compiler/testData/codegen/box/platformTypes/primitives/identityEquals.kt

@@ -9,12 +9,5 @@ fun box(): String {
     val x2 = l[0] === l[0]
     if (!x2) return "Fail 2: $x"
 
-    val y = l[0].identityEquals(1000)
-    if (y) return "Fail (y): $y"
-    val y1 = l[0].identityEquals(1)
-    if (y1) return "Fail (y1): $y"
-    val y2 = l[0].identityEquals(l[0])
-    if (!y2) return "Fail (y2): $y"
-
     return "OK"
 }

compiler/testData/codegen/box/primitiveTypes/kt1055.kt

@@ -1,6 +1,6 @@
 fun box() : String {
     val a = "lala"
-    if(!a.identityEquals(a)) return "fail 1"
-    if(a.identityEquals(a)) return "OK"
+    if(a !== a) return "fail 1"
+    if(a === a) return "OK"
     return "fail 2"
 }

compiler/testData/codegen/box/primitiveTypes/kt1093.kt

@@ -1,7 +1,7 @@
 val f : (Any) -> String = { it.toString() }
 
 fun box() : String {
-    if(!(f.identityEquals(f))) return "fail 1"
+    if(!(f === f)) return "fail 1"
     if(!(f == f)) return "fail 2"
     if(!(f.equals(f))) return "fail 3"
     return "OK"