Revert of Add %TypedArray% to proto chain (patchset #6 id:100001 of...

Revert of Add %TypedArray% to proto chain (patchset #6 id:100001 of https://codereview.chromium.org/1186733002/)

Reason for revert:
[Sheriff] Changes layout tests:
http://build.chromium.org/p/client.v8.fyi/builders/V8-Blink%20Linux%2032/builds/429

See e.g.:
https://storage.googleapis.com/chromium-layout-test-archives/V8-Blink_Linux_32/429/layout-test-results/inspector/console/console-big-array-pretty-diff.html

Please upload a blink side needsmanualrebaseline change first for these tests if the change is intended. Please also add a blink trybot on a reland of this CL.

Original issue's description:
> Add %TypedArray% to proto chain
>
> According to the ES6 spec, the main methods and getters shouldn't
> be properties of the individual TypedArray objects and prototypes
> but instead on %TypedArray% and %TypedArray%.prototype. This
> difference is observable through introspection. This patch moves
> some methods and getters to the proper place, with the exception
> of %TypedArray%.prototype.subarray and harmony methods. These will
> be moved in follow-on patches.
>
> BUG=v8:4085
> LOG=Y
> R=adamk
>
> Committed: https://crrev.com/a10590158260737b256fac3254b4939f48f90095
> Cr-Commit-Position: refs/heads/master@{#29057}

TBR=adamk@chromium.org,arv@chromium.org,littledan@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:4085

Review URL: https://codereview.chromium.org/1192433003

Cr-Commit-Position: refs/heads/master@{#29070}

src/harmony-typedarray.js

@@ -11,21 +11,25 @@
 // -------------------------------------------------------------------
 // Imports
 
+macro TYPED_ARRAYS(FUNCTION)
+// arrayIds below should be synchronized with Runtime_TypedArrayInitialize.
+FUNCTION(Uint8Array)
+FUNCTION(Int8Array)
+FUNCTION(Uint16Array)
+FUNCTION(Int16Array)
+FUNCTION(Uint32Array)
+FUNCTION(Int32Array)
+FUNCTION(Float32Array)
+FUNCTION(Float64Array)
+FUNCTION(Uint8ClampedArray)
+endmacro
 
 macro DECLARE_GLOBALS(NAME)
 var GlobalNAME = global.NAME;
 endmacro
 
+TYPED_ARRAYS(DECLARE_GLOBALS)
 DECLARE_GLOBALS(Array)
-DECLARE_GLOBALS(Uint8Array)
-DECLARE_GLOBALS(Int8Array)
-DECLARE_GLOBALS(Uint16Array)
-DECLARE_GLOBALS(Int16Array)
-DECLARE_GLOBALS(Uint32Array)
-DECLARE_GLOBALS(Int32Array)
-DECLARE_GLOBALS(Float32Array)
-DECLARE_GLOBALS(Float64Array)
-DECLARE_GLOBALS(Uint8ClampedArray)
 
 var ArrayFrom;
 var ArrayToString;
@@ -47,8 +51,6 @@ var InnerArrayToLocaleString;
 var IsNaN;
 var MathMax;
 var MathMin;
-var TypedArray = GlobalUint8Array.__proto__;
-var TypedArrayPrototype = GlobalUint8Array.prototype.__proto__;
 
 utils.Import(function(from) {
   ArrayFrom = from.ArrayFrom;
@@ -374,33 +376,38 @@ function TypedArrayFrom(source, mapfn, thisArg) {
 }
 %FunctionSetLength(TypedArrayFrom, 1);
 
+// TODO(littledan): Fix the TypedArray proto chain (bug v8:4085).
+macro EXTEND_TYPED_ARRAY(NAME)
   // Set up non-enumerable functions on the object.
-utils.InstallFunctions(TypedArray, DONT_ENUM | DONT_DELETE | READ_ONLY, [
-  "from", TypedArrayFrom,
-  "of", TypedArrayOf
-]);
-
-// Set up non-enumerable functions on the prototype object.
-utils.InstallFunctions(TypedArrayPrototype, DONT_ENUM, [
-  "copyWithin", TypedArrayCopyWithin,
-  "every", TypedArrayEvery,
-  "fill", TypedArrayFill,
-  "filter", TypedArrayFilter,
-  "find", TypedArrayFind,
-  "findIndex", TypedArrayFindIndex,
-  "indexOf", TypedArrayIndexOf,
-  "join", TypedArrayJoin,
-  "lastIndexOf", TypedArrayLastIndexOf,
-  "forEach", TypedArrayForEach,
-  "map", TypedArrayMap,
-  "reduce", TypedArrayReduce,
-  "reduceRight", TypedArrayReduceRight,
-  "reverse", TypedArrayReverse,
-  "slice", TypedArraySlice,
-  "some", TypedArraySome,
-  "sort", TypedArraySort,
-  "toString", TypedArrayToString,
-  "toLocaleString", TypedArrayToLocaleString
-]);
+  utils.InstallFunctions(GlobalNAME, DONT_ENUM | DONT_DELETE | READ_ONLY, [
+    "from", TypedArrayFrom,
+    "of", TypedArrayOf
+  ]);
+
+  // Set up non-enumerable functions on the prototype object.
+  utils.InstallFunctions(GlobalNAME.prototype, DONT_ENUM, [
+    "copyWithin", TypedArrayCopyWithin,
+    "every", TypedArrayEvery,
+    "fill", TypedArrayFill,
+    "filter", TypedArrayFilter,
+    "find", TypedArrayFind,
+    "findIndex", TypedArrayFindIndex,
+    "indexOf", TypedArrayIndexOf,
+    "join", TypedArrayJoin,
+    "lastIndexOf", TypedArrayLastIndexOf,
+    "forEach", TypedArrayForEach,
+    "map", TypedArrayMap,
+    "reduce", TypedArrayReduce,
+    "reduceRight", TypedArrayReduceRight,
+    "reverse", TypedArrayReverse,
+    "slice", TypedArraySlice,
+    "some", TypedArraySome,
+    "sort", TypedArraySort,
+    "toString", TypedArrayToString,
+    "toLocaleString", TypedArrayToLocaleString
+  ]);
+endmacro
+
+TYPED_ARRAYS(EXTEND_TYPED_ARRAY)
 
 })

src/runtime/runtime-function.cc

@@ -171,7 +171,6 @@ RUNTIME_FUNCTION(Runtime_FunctionSetLength) {
 }
 
 
-// Set the "prototype" property of a constructor Function.
 RUNTIME_FUNCTION(Runtime_FunctionSetPrototype) {
   HandleScope scope(isolate);
   DCHECK(args.length() == 2);

src/runtime/runtime-object.cc

@@ -148,7 +148,6 @@ RUNTIME_FUNCTION(Runtime_GetPrototype) {
 }
 
 
-// Set the [[Prototype]] internal slot of an object.
 RUNTIME_FUNCTION(Runtime_InternalSetPrototype) {
   HandleScope scope(isolate);
   DCHECK(args.length() == 2);

src/typedarray.js

@@ -47,44 +47,6 @@ var InternalArray = utils.InternalArray;
 
 // --------------- Typed Arrays ---------------------
 
-function TypedArray() {
-  if (!%_IsConstructCall()) {
-    throw MakeTypeError(kConstructorNotFunction, "TypedArray")
-  }
-  // TODO(littledan): When the TypedArrays code is refactored to provide
-  // a common constructor entrypoint for v8:4182, call that here.
-}
-
-function TypedArray_GetBuffer() {
-  if (!%_IsTypedArray(this)) {
-    throw MakeTypeError(kIncompatibleMethodReceiver, "TypedArray.buffer", this);
-  }
-  return %TypedArrayGetBuffer(this);
-}
-
-function TypedArray_GetByteLength() {
-  if (!%_IsTypedArray(this)) {
-    throw MakeTypeError(kIncompatibleMethodReceiver, "TypedArray.byteLength",
-                        this);
-  }
-  return %_ArrayBufferViewGetByteLength(this);
-}
-
-function TypedArray_GetByteOffset() {
-  if (!%_IsTypedArray(this)) {
-    throw MakeTypeError(kIncompatibleMethodReceiver, "TypedArray.byteOffset",
-                        this);
-  }
-  return %_ArrayBufferViewGetByteOffset(this);
-}
-
-function TypedArray_GetLength() {
-  if (!%_IsTypedArray(this)) {
-    throw MakeTypeError(kIncompatibleMethodReceiver, "TypedArray.length", this);
-  }
-  return %_TypedArrayGetLength(this);
-}
-
 macro TYPED_ARRAY_CONSTRUCTOR(ARRAY_ID, NAME, ELEMENT_SIZE)
 function NAMEConstructByArrayBuffer(obj, buffer, byteOffset, length) {
   if (!IS_UNDEFINED(byteOffset)) {
@@ -210,6 +172,34 @@ function NAMEConstructor(arg1, arg2, arg3) {
   }
 }
 
+function NAME_GetBuffer() {
+  if (!(%_ClassOf(this) === 'NAME')) {
+    throw MakeTypeError(kIncompatibleMethodReceiver, "NAME.buffer", this);
+  }
+  return %TypedArrayGetBuffer(this);
+}
+
+function NAME_GetByteLength() {
+  if (!(%_ClassOf(this) === 'NAME')) {
+    throw MakeTypeError(kIncompatibleMethodReceiver, "NAME.byteLength", this);
+  }
+  return %_ArrayBufferViewGetByteLength(this);
+}
+
+function NAME_GetByteOffset() {
+  if (!(%_ClassOf(this) === 'NAME')) {
+    throw MakeTypeError(kIncompatibleMethodReceiver, "NAME.byteOffset", this);
+  }
+  return %_ArrayBufferViewGetByteOffset(this);
+}
+
+function NAME_GetLength() {
+  if (!(%_ClassOf(this) === 'NAME')) {
+    throw MakeTypeError(kIncompatibleMethodReceiver, "NAME.length", this);
+  }
+  return %_TypedArrayGetLength(this);
+}
+
 function NAMESubArray(begin, end) {
   if (!(%_ClassOf(this) === 'NAME')) {
     throw MakeTypeError(kIncompatibleMethodReceiver, "NAME.subarray", this);
@@ -357,33 +347,29 @@ function TypedArrayGetToStringTag() {
 
 // -------------------------------------------------------------------
 
-utils.InstallGetter(TypedArray.prototype, "buffer", TypedArray_GetBuffer);
-utils.InstallGetter(TypedArray.prototype, "byteOffset",
-                    TypedArray_GetByteOffset, DONT_ENUM);
-utils.InstallGetter(TypedArray.prototype, "byteLength",
-                    TypedArray_GetByteLength, DONT_ENUM);
-utils.InstallGetter(TypedArray.prototype, "length", TypedArray_GetLength,
-                    DONT_ENUM);
-utils.InstallGetter(TypedArray.prototype, symbolToStringTag,
-                    TypedArrayGetToStringTag, DONT_ENUM);
-utils.InstallFunctions(TypedArray.prototype, DONT_ENUM, [
-  "set", TypedArraySet
-]);
-
 macro SETUP_TYPED_ARRAY(ARRAY_ID, NAME, ELEMENT_SIZE)
   %SetCode(GlobalNAME, NAMEConstructor);
-  %InternalSetPrototype(GlobalNAME, TypedArray);
-  %FunctionSetPrototype(GlobalNAME, new TypedArray());
-  %AddNamedProperty(GlobalNAME.prototype,
-                    "BYTES_PER_ELEMENT", ELEMENT_SIZE,
-                    READ_ONLY | DONT_ENUM | DONT_DELETE);
+  %FunctionSetPrototype(GlobalNAME, new GlobalObject());
 
   %AddNamedProperty(GlobalNAME, "BYTES_PER_ELEMENT", ELEMENT_SIZE,
                     READ_ONLY | DONT_ENUM | DONT_DELETE);
   %AddNamedProperty(GlobalNAME.prototype,
                     "constructor", global.NAME, DONT_ENUM);
+  %AddNamedProperty(GlobalNAME.prototype,
+                    "BYTES_PER_ELEMENT", ELEMENT_SIZE,
+                    READ_ONLY | DONT_ENUM | DONT_DELETE);
+  utils.InstallGetter(GlobalNAME.prototype, "buffer", NAME_GetBuffer);
+  utils.InstallGetter(GlobalNAME.prototype, "byteOffset", NAME_GetByteOffset,
+                      DONT_ENUM | DONT_DELETE);
+  utils.InstallGetter(GlobalNAME.prototype, "byteLength", NAME_GetByteLength,
+                      DONT_ENUM | DONT_DELETE);
+  utils.InstallGetter(GlobalNAME.prototype, "length", NAME_GetLength,
+                      DONT_ENUM | DONT_DELETE);
+  utils.InstallGetter(GlobalNAME.prototype, symbolToStringTag,
+                      TypedArrayGetToStringTag);
   utils.InstallFunctions(GlobalNAME.prototype, DONT_ENUM, [
-    "subarray", NAMESubArray
+    "subarray", NAMESubArray,
+    "set", TypedArraySet
   ]);
 endmacro
 

test/mjsunit/es6/built-in-accessor-names.js

@@ -6,22 +6,14 @@
 
 'use strict';
 
-function getPropertyDescriptor(object, field, expectedDepth) {
-  for (var depth = 0; depth < expectedDepth; depth++) {
-    assertFalse(Object.hasOwnProperty(object, field));
-    object = object.__proto__;
-  }
-  return Object.getOwnPropertyDescriptor(object, field);
-}
-
-function assertGetterName(expected, object, name, expectedDepth) {
-  var descr = getPropertyDescriptor(object, name, expectedDepth);
+function assertGetterName(expected, object, name) {
+  var descr = Object.getOwnPropertyDescriptor(object, name);
   assertSame(expected, descr.get.name);
 }
 
 
-function assertSetterName(expected, object, name, indirect) {
-  var descr = getPropertyDescriptor(object, name);
+function assertSetterName(expected, object, name) {
+  var descr = Object.getOwnPropertyDescriptor(object, name);
   assertSame(expected, descr.set.name);
 }
 
@@ -44,11 +36,11 @@ let typedArrays = [
 ];
 
 for (let f of typedArrays) {
-  assertGetterName('get buffer', f.prototype, 'buffer', 1);
-  assertGetterName('get byteOffset', f.prototype, 'byteOffset', 1);
-  assertGetterName('get byteLength', f.prototype, 'byteLength', 1);
-  assertGetterName('get length', f.prototype, 'length', 1);
-  assertGetterName('get [Symbol.toStringTag]', f.prototype, Symbol.toStringTag, 1);
+  assertGetterName('get buffer', f.prototype, 'buffer');
+  assertGetterName('get byteOffset', f.prototype, 'byteOffset');
+  assertGetterName('get byteLength', f.prototype, 'byteLength');
+  assertGetterName('get length', f.prototype, 'length');
+  assertGetterName('get [Symbol.toStringTag]', f.prototype, Symbol.toStringTag);
 }
 
 

test/mjsunit/get-prototype-of.js

@@ -82,7 +82,12 @@ var functions = [
   // DataView,
   Date,
   Error,
+  Float32Array,
+  Float64Array,
   Function,
+  Int16Array,
+  Int32Array,
+  Int8Array,
   Map,
   Number,
   Object,
@@ -91,6 +96,10 @@ var functions = [
   Set,
   String,
   // Symbol, not constructible
+  Uint16Array,
+  Uint32Array,
+  Uint8Array,
+  Uint8ClampedArray,
   WeakMap,
   WeakSet,
 ];
@@ -100,23 +109,6 @@ for (var f of functions) {
   assertPrototypeOf(new f(), f.prototype);
 }
 
-var typedArrayConstructors = [
-  Float32Array,
-  Float64Array,
-  Int16Array,
-  Int32Array,
-  Int8Array,
-  Uint16Array,
-  Uint32Array,
-  Uint8Array,
-  Uint8ClampedArray,
-];
-
-for (var t of typedArrayConstructors) {
-  assertPrototypeOf(t, Uint8Array.__proto__);
-  assertPrototypeOf(new t(), t.prototype);
-}
-
 var p = new Promise(function() {});
 assertPrototypeOf(p, Promise.prototype);
 

test/mjsunit/harmony/sharedarraybuffer.js

@@ -87,14 +87,6 @@ function MakeSharedTypedArray(constr, numElements) {
   return new constr(sab);
 }
 
-function getPropertyDescriptor(object, field, expectedDepth) {
-  for (var depth = 0; depth < expectedDepth; depth++) {
-    assertFalse(Object.hasOwnProperty(object, field));
-    object = object.__proto__;
-  }
-  return Object.getOwnPropertyDescriptor(object, field);
-}
-
 function TestTypedArray(constr, elementSize, typicalElement) {
   assertSame(elementSize, constr.BYTES_PER_ELEMENT);
 
@@ -211,7 +203,8 @@ function TestTypedArray(constr, elementSize, typicalElement) {
   var a = new constr(sab, 64*elementSize, 128);
   assertEquals("[object " + constr.name + "]",
       Object.prototype.toString.call(a));
-  var desc = getPropertyDescriptor(constr.prototype, Symbol.toStringTag, 1);
+  var desc = Object.getOwnPropertyDescriptor(
+      constr.prototype, Symbol.toStringTag);
   assertTrue(desc.configurable);
   assertFalse(desc.enumerable);
   assertFalse(!!desc.writable);
@@ -317,13 +310,17 @@ var typedArrayConstructors = [
 
 function TestPropertyTypeChecks(constructor) {
   function CheckProperty(name) {
-    var d = getPropertyDescriptor(constructor.prototype, name, 1);
+    var d = Object.getOwnPropertyDescriptor(constructor.prototype, name);
     var o = {};
     assertThrows(function() {d.get.call(o);}, TypeError);
     for (var i = 0; i < typedArrayConstructors.length; i++) {
       var ctor = typedArrayConstructors[i];
       var a = MakeSharedTypedArray(ctor, 10);
-      d.get.call(a); // shouldn't throw on any type
+      if (ctor === constructor) {
+        d.get.call(a); // shouldn't throw
+      } else {
+        assertThrows(function() {d.get.call(a);}, TypeError);
+      }
     }
   }
 

test/mjsunit/harmony/typedarrays-of.js

@@ -15,16 +15,8 @@ var typedArrayConstructors = [
   Int32Array,
   Uint8ClampedArray,
   Float32Array,
-  Float64Array
-];
+  Float64Array];
 
-function getPropertyDescriptor(object, field, expectedDepth) {
-  for (var depth = 0; depth < expectedDepth; depth++) {
-    assertFalse(Object.hasOwnProperty(object, field));
-    object = object.__proto__;
-  }
-  return Object.getOwnPropertyDescriptor(object, field);
-}
 
 function TestTypedArrayOf(constructor) {
   // %TypedArray%.of basics.
@@ -119,7 +111,7 @@ function TestTypedArrayOf(constructor) {
   assertEquals("pass", status);
 
   // Check superficial features of %TypedArray%.of.
-  var desc = getPropertyDescriptor(constructor, "of", 1);
+  var desc = Object.getOwnPropertyDescriptor(constructor, "of");
 
   assertEquals(desc.configurable, false);
   assertEquals(desc.enumerable, false);

test/mjsunit/harmony/typedarrays.js

@@ -121,14 +121,6 @@ TestArrayBufferSlice();
 
 // Typed arrays
 
-function getPropertyDescriptor(object, field, expectedDepth) {
-  for (var depth = 0; depth < expectedDepth; depth++) {
-    assertFalse(Object.hasOwnProperty(object, field));
-    object = object.__proto__;
-  }
-  return Object.getOwnPropertyDescriptor(object, field);
-}
-
 function TestTypedArray(constr, elementSize, typicalElement) {
   assertSame(elementSize, constr.BYTES_PER_ELEMENT);
 
@@ -277,7 +269,8 @@ function TestTypedArray(constr, elementSize, typicalElement) {
   var a = new constr(ab, 64*elementSize, 128);
   assertEquals("[object " + constr.name + "]",
       Object.prototype.toString.call(a));
-  var desc = getPropertyDescriptor(constr.prototype, Symbol.toStringTag, 1);
+  var desc = Object.getOwnPropertyDescriptor(
+      constr.prototype, Symbol.toStringTag);
   assertTrue(desc.configurable);
   assertFalse(desc.enumerable);
   assertFalse(!!desc.writable);
@@ -424,13 +417,17 @@ var typedArrayConstructors = [
 
 function TestPropertyTypeChecks(constructor) {
   function CheckProperty(name) {
-    var d = getPropertyDescriptor(constructor.prototype, name, 1);
+    var d = Object.getOwnPropertyDescriptor(constructor.prototype, name);
     var o = {};
     assertThrows(function() {d.get.call(o);}, TypeError);
     for (var i = 0; i < typedArrayConstructors.length; i++) {
       var ctor = typedArrayConstructors[i];
       var a = new ctor(10);
-      d.get.call(a); // shouldn't throw, even from a different type
+      if (ctor === constructor) {
+        d.get.call(a); // shouldn't throw
+      } else {
+        assertThrows(function() {d.get.call(a);}, TypeError);
+      }
     }
   }
 

test/mjsunit/regress/regress-typedarray-length.js

@@ -71,6 +71,14 @@ assertEquals(undefined, get(a));
   assertEquals(undefined, get(a));
 })();
 
+// Ensure we cannot delete length, byteOffset, byteLength.
+assertTrue(Int32Array.prototype.hasOwnProperty("length"));
+assertTrue(Int32Array.prototype.hasOwnProperty("byteOffset"));
+assertTrue(Int32Array.prototype.hasOwnProperty("byteLength"));
+assertFalse(delete Int32Array.prototype.length);
+assertFalse(delete Int32Array.prototype.byteOffset);
+assertFalse(delete Int32Array.prototype.byteLength);
+
 a = new Int32Array(100);
 
 get = function(a) {
@@ -102,13 +110,3 @@ assertEquals(0, get(a));
 assertEquals(0, get(a));
 %OptimizeFunctionOnNextCall(get);
 assertEquals(0, get(a));
-
-// Ensure we can delete length, byteOffset, byteLength.
-for (var name of ['length', 'byteOffset', 'byteLength', 'buffer']) {
-  var property = Object.getOwnPropertyDescriptor(
-                     Int32Array.prototype.__proto__, name);
-  assertEquals("object", typeof property);
-  assertEquals(true, property.configurable);
-  assertEquals(false, property.enumerable);
-  assertEquals("function", typeof property.get);
-}