From 8dd16259287f58f9273002717ec4d27e97127719 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 12 Jun 2024 07:43:14 +0200
Subject: Merging upstream version 127.0.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 ...teoffset-throws-from-modulo-element-size-sab.js |   2 +-
 ...erbyteoffset-throws-from-modulo-element-size.js |   1 +
 .../byteoffset-is-negative-throws-sab.js           |   2 +-
 .../buffer-arg/byteoffset-is-negative-throws.js    |   1 +
 .../buffer-arg/byteoffset-is-negative-zero-sab.js  |   2 +-
 .../buffer-arg/byteoffset-is-negative-zero.js      |   1 +
 .../buffer-arg/byteoffset-is-symbol-throws-sab.js  |   2 +-
 .../buffer-arg/byteoffset-is-symbol-throws.js      |   1 +
 ...teoffset-throws-from-modulo-element-size-sab.js |   2 +-
 .../byteoffset-throws-from-modulo-element-size.js  |   1 +
 .../byteoffset-to-number-detachbuffer.js           |   1 +
 .../buffer-arg/byteoffset-to-number-throws-sab.js  |   2 +-
 .../buffer-arg/byteoffset-to-number-throws.js      |   1 +
 .../buffer-arg/custom-proto-access-throws-sab.js   |   2 +-
 .../ctors/buffer-arg/custom-proto-access-throws.js |   1 +
 .../buffer-arg/defined-length-and-offset-sab.js    |   2 +-
 .../ctors/buffer-arg/defined-length-and-offset.js  |   1 +
 .../ctors/buffer-arg/defined-length-sab.js         |   2 +-
 .../ctors/buffer-arg/defined-length.js             |   1 +
 .../buffer-arg/defined-negative-length-sab.js      |   2 +-
 .../ctors/buffer-arg/defined-negative-length.js    |   1 +
 .../ctors/buffer-arg/defined-offset-sab.js         |   2 +-
 .../ctors/buffer-arg/defined-offset.js             |   1 +
 .../ctors/buffer-arg/detachedbuffer.js             |   1 +
 .../buffer-arg/excessive-length-throws-sab.js      |   2 +-
 .../ctors/buffer-arg/excessive-length-throws.js    |   1 +
 .../excessive-offset-throws-resizable-ab.js        |   2 +-
 .../buffer-arg/excessive-offset-throws-sab.js      |   2 +-
 .../ctors/buffer-arg/excessive-offset-throws.js    |   1 +
 .../invoked-with-undefined-newtarget-sab.js        |   2 +-
 .../buffer-arg/invoked-with-undefined-newtarget.js |   1 +
 .../ctors/buffer-arg/is-referenced-sab.js          |   2 +-
 .../ctors/buffer-arg/is-referenced.js              |   1 +
 .../ctors/buffer-arg/length-access-throws-sab.js   |   2 +-
 .../ctors/buffer-arg/length-access-throws.js       |   1 +
 .../buffer-arg/length-is-symbol-throws-sab.js      |   2 +-
 .../ctors/buffer-arg/length-is-symbol-throws.js    |   1 +
 .../buffer-arg/length-to-number-detachbuffer.js    |   1 +
 .../buffer-arg/new-instance-extensibility-sab.js   |   2 +-
 .../ctors/buffer-arg/new-instance-extensibility.js |   1 +
 .../ctors/buffer-arg/proto-from-ctor-realm-sab.js  |   2 +-
 .../ctors/buffer-arg/proto-from-ctor-realm.js      |   1 +
 .../ctors/buffer-arg/returns-new-instance-sab.js   |   2 +-
 .../ctors/buffer-arg/returns-new-instance.js       |   1 +
 .../ctors/buffer-arg/toindex-bytelength-sab.js     |   2 +-
 .../ctors/buffer-arg/toindex-bytelength.js         |   1 +
 .../ctors/buffer-arg/toindex-byteoffset-sab.js     |   2 +-
 .../ctors/buffer-arg/toindex-byteoffset.js         |   1 +
 .../typedarray-backed-by-sharedarraybuffer.js      |   2 +-
 .../buffer-arg/use-custom-proto-if-object-sab.js   |   2 +-
 .../ctors/buffer-arg/use-custom-proto-if-object.js |   1 +
 ...ault-proto-if-custom-proto-is-not-object-sab.js |   2 +-
 ...-default-proto-if-custom-proto-is-not-object.js |   1 +
 .../ctors/length-arg/custom-proto-access-throws.js |   1 +
 .../ctors/length-arg/init-zeros.js                 |   1 +
 .../length-arg/is-infinity-throws-rangeerror.js    |   1 +
 .../is-negative-integer-throws-rangeerror.js       |   1 +
 .../ctors/length-arg/is-symbol-throws.js           |   1 +
 .../ctors/length-arg/new-instance-extensibility.js |   1 +
 .../ctors/length-arg/proto-from-ctor-realm.js      |   1 +
 .../ctors/length-arg/returns-object.js             |   1 +
 .../ctors/length-arg/toindex-length.js             |   1 +
 .../ctors/length-arg/undefined-newtarget-throws.js |   1 +
 .../ctors/length-arg/use-custom-proto-if-object.js |   1 +
 ...-default-proto-if-custom-proto-is-not-object.js |   1 +
 .../ctors/no-args/custom-proto-access-throws.js    |   1 +
 .../ctors/no-args/new-instance-extensibility.js    |   1 +
 .../ctors/no-args/proto-from-ctor-realm.js         |   1 +
 .../ctors/no-args/returns-object.js                |   1 +
 .../ctors/no-args/undefined-newtarget-throws.js    |   1 +
 .../ctors/no-args/use-custom-proto-if-object.js    |   1 +
 ...-default-proto-if-custom-proto-is-not-object.js |   1 +
 .../ctors/object-arg/as-array-returns.js           |   1 +
 .../object-arg/as-generator-iterable-returns.js    |   1 +
 .../conversion-operation-consistent-nan.js         |   1 +
 .../ctors/object-arg/conversion-operation.js       |   1 +
 .../ctors/object-arg/custom-proto-access-throws.js |   1 +
 .../iterated-array-changed-by-tonumber.js          |  46 +++
 .../iterated-array-with-modified-array-iterator.js |  52 +++
 .../ctors/object-arg/iterating-throws.js           |   1 +
 .../object-arg/iterator-is-null-as-array-like.js   |   1 +
 .../object-arg/iterator-not-callable-throws.js     |   1 +
 .../ctors/object-arg/iterator-throws.js            |   1 +
 .../ctors/object-arg/length-excessive-throws.js    |   1 +
 .../ctors/object-arg/length-is-symbol-throws.js    |   1 +
 .../ctors/object-arg/length-throws.js              |   1 +
 .../ctors/object-arg/new-instance-extensibility.js |   1 +
 .../ctors/object-arg/proto-from-ctor-realm.js      |   1 +
 .../ctors/object-arg/returns.js                    |   1 +
 .../ctors/object-arg/shell.js                      | 347 +++++++++++++++------
 .../ctors/object-arg/throws-from-property.js       |   1 +
 .../throws-setting-obj-to-primitive-typeerror.js   |   1 +
 .../object-arg/throws-setting-obj-to-primitive.js  |   1 +
 .../object-arg/throws-setting-obj-tostring.js      |   1 +
 .../throws-setting-obj-valueof-typeerror.js        |   1 +
 .../ctors/object-arg/throws-setting-obj-valueof.js |   1 +
 .../ctors/object-arg/throws-setting-property.js    |   1 +
 .../object-arg/throws-setting-symbol-property.js   |   1 +
 .../ctors/object-arg/undefined-newtarget-throws.js |   1 +
 .../ctors/object-arg/use-custom-proto-if-object.js |   1 +
 ...-default-proto-if-custom-proto-is-not-object.js |   1 +
 .../typedarray-arg/custom-proto-access-throws.js   |   1 +
 .../typedarray-arg/new-instance-extensibility.js   |   1 +
 .../other-ctor-returns-new-typedarray.js           |   1 +
 .../ctors/typedarray-arg/proto-from-ctor-realm.js  |   1 +
 .../ctors/typedarray-arg/returns-new-instance.js   |   1 +
 .../same-ctor-buffer-ctor-species-null.js          |   1 +
 .../same-ctor-buffer-ctor-species-undefined.js     |   1 +
 .../same-ctor-returns-new-cloned-typedarray.js     |   1 +
 .../typedarray-arg/src-typedarray-big-throws.js    |   1 +
 .../typedarray-arg/undefined-newtarget-throws.js   |   1 +
 .../typedarray-arg/use-custom-proto-if-object.js   |   1 +
 ...-default-proto-if-custom-proto-is-not-object.js |   1 +
 113 files changed, 464 insertions(+), 117 deletions(-)
 create mode 100644 js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/iterated-array-changed-by-tonumber.js
 create mode 100644 js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/iterated-array-with-modified-array-iterator.js

(limited to 'js/src/tests/test262/built-ins/TypedArrayConstructors/ctors')

diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/bufferbyteoffset-throws-from-modulo-element-size-sab.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/bufferbyteoffset-throws-from-modulo-element-size-sab.js
index 6cd11a7883..09b261fbc4 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/bufferbyteoffset-throws-from-modulo-element-size-sab.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/bufferbyteoffset-throws-from-modulo-element-size-sab.js
@@ -1,4 +1,4 @@
-// |reftest| skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
+// |reftest| shell-option(--enable-float16array) skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // Copyright (C) 2017 Mozilla Corporation. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/bufferbyteoffset-throws-from-modulo-element-size.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/bufferbyteoffset-throws-from-modulo-element-size.js
index 0b1f59d0b1..0b66e1a912 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/bufferbyteoffset-throws-from-modulo-element-size.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/bufferbyteoffset-throws-from-modulo-element-size.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/byteoffset-is-negative-throws-sab.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/byteoffset-is-negative-throws-sab.js
index 70d62315c1..7054786da3 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/byteoffset-is-negative-throws-sab.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/byteoffset-is-negative-throws-sab.js
@@ -1,4 +1,4 @@
-// |reftest| skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
+// |reftest| shell-option(--enable-float16array) skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // Copyright (C) 2017 Mozilla Corporation. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/byteoffset-is-negative-throws.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/byteoffset-is-negative-throws.js
index 996976385e..5c93556f2f 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/byteoffset-is-negative-throws.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/byteoffset-is-negative-throws.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/byteoffset-is-negative-zero-sab.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/byteoffset-is-negative-zero-sab.js
index ecb8b39000..80b41bd1c2 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/byteoffset-is-negative-zero-sab.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/byteoffset-is-negative-zero-sab.js
@@ -1,4 +1,4 @@
-// |reftest| skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
+// |reftest| shell-option(--enable-float16array) skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
 // Copyright (C) 2015 André Bargull. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/byteoffset-is-negative-zero.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/byteoffset-is-negative-zero.js
index cd8b786ccc..d38df17c8b 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/byteoffset-is-negative-zero.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/byteoffset-is-negative-zero.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2015 André Bargull. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/byteoffset-is-symbol-throws-sab.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/byteoffset-is-symbol-throws-sab.js
index b7a509cb98..25db8b4745 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/byteoffset-is-symbol-throws-sab.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/byteoffset-is-symbol-throws-sab.js
@@ -1,4 +1,4 @@
-// |reftest| skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
+// |reftest| shell-option(--enable-float16array) skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // Copyright (C) 2017 Mozilla Corporation. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/byteoffset-is-symbol-throws.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/byteoffset-is-symbol-throws.js
index 9423fc4d6c..9aaea65abe 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/byteoffset-is-symbol-throws.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/byteoffset-is-symbol-throws.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/byteoffset-throws-from-modulo-element-size-sab.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/byteoffset-throws-from-modulo-element-size-sab.js
index 148be420dd..78dfd2e06f 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/byteoffset-throws-from-modulo-element-size-sab.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/byteoffset-throws-from-modulo-element-size-sab.js
@@ -1,4 +1,4 @@
-// |reftest| skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
+// |reftest| shell-option(--enable-float16array) skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // Copyright (C) 2017 Mozilla Corporation. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/byteoffset-throws-from-modulo-element-size.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/byteoffset-throws-from-modulo-element-size.js
index bd3005f74a..6fd2303d25 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/byteoffset-throws-from-modulo-element-size.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/byteoffset-throws-from-modulo-element-size.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/byteoffset-to-number-detachbuffer.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/byteoffset-to-number-detachbuffer.js
index 627c8778ad..6c581a55d7 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/byteoffset-to-number-detachbuffer.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/byteoffset-to-number-detachbuffer.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2017 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/byteoffset-to-number-throws-sab.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/byteoffset-to-number-throws-sab.js
index 5b3ec7591d..2a1a9e41f3 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/byteoffset-to-number-throws-sab.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/byteoffset-to-number-throws-sab.js
@@ -1,4 +1,4 @@
-// |reftest| skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
+// |reftest| shell-option(--enable-float16array) skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // Copyright (C) 2017 Mozilla Corporation. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/byteoffset-to-number-throws.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/byteoffset-to-number-throws.js
index 47ff7ea095..2414b5cdd1 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/byteoffset-to-number-throws.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/byteoffset-to-number-throws.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/custom-proto-access-throws-sab.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/custom-proto-access-throws-sab.js
index bccf102235..9976158eb7 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/custom-proto-access-throws-sab.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/custom-proto-access-throws-sab.js
@@ -1,4 +1,4 @@
-// |reftest| skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
+// |reftest| shell-option(--enable-float16array) skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // Copyright (C) 2017 Mozilla Corporation. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/custom-proto-access-throws.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/custom-proto-access-throws.js
index 3f43b72932..0c55f1b7d6 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/custom-proto-access-throws.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/custom-proto-access-throws.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/defined-length-and-offset-sab.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/defined-length-and-offset-sab.js
index 56ecd2f44a..082d63a8a4 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/defined-length-and-offset-sab.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/defined-length-and-offset-sab.js
@@ -1,4 +1,4 @@
-// |reftest| skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
+// |reftest| shell-option(--enable-float16array) skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // Copyright (C) 2017 Mozilla Corporation. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/defined-length-and-offset.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/defined-length-and-offset.js
index 80e815cf61..6c795df976 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/defined-length-and-offset.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/defined-length-and-offset.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/defined-length-sab.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/defined-length-sab.js
index a729a9a231..259d3d9320 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/defined-length-sab.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/defined-length-sab.js
@@ -1,4 +1,4 @@
-// |reftest| skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
+// |reftest| shell-option(--enable-float16array) skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // Copyright (C) 2017 Mozilla Corporation. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/defined-length.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/defined-length.js
index 52abb61850..9845a827ce 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/defined-length.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/defined-length.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/defined-negative-length-sab.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/defined-negative-length-sab.js
index 3e7a33df8a..98cd8597bc 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/defined-negative-length-sab.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/defined-negative-length-sab.js
@@ -1,4 +1,4 @@
-// |reftest| skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
+// |reftest| shell-option(--enable-float16array) skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // Copyright (C) 2017 Mozilla Corporation. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/defined-negative-length.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/defined-negative-length.js
index f795adabeb..2c00b69737 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/defined-negative-length.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/defined-negative-length.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/defined-offset-sab.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/defined-offset-sab.js
index 3ad0730ddb..4d5879643f 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/defined-offset-sab.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/defined-offset-sab.js
@@ -1,4 +1,4 @@
-// |reftest| skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
+// |reftest| shell-option(--enable-float16array) skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // Copyright (C) 2017 Mozilla Corporation. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/defined-offset.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/defined-offset.js
index 1c416c4a45..fa73963e38 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/defined-offset.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/defined-offset.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/detachedbuffer.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/detachedbuffer.js
index 15f2abe5e3..33f45327c3 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/detachedbuffer.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/detachedbuffer.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2017 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/excessive-length-throws-sab.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/excessive-length-throws-sab.js
index ee0b54e943..71d193af6c 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/excessive-length-throws-sab.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/excessive-length-throws-sab.js
@@ -1,4 +1,4 @@
-// |reftest| skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
+// |reftest| shell-option(--enable-float16array) skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // Copyright (C) 2017 Mozilla Corporation. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/excessive-length-throws.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/excessive-length-throws.js
index ab5836e944..63801af8b7 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/excessive-length-throws.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/excessive-length-throws.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/excessive-offset-throws-resizable-ab.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/excessive-offset-throws-resizable-ab.js
index 0095a54485..45dd413421 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/excessive-offset-throws-resizable-ab.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/excessive-offset-throws-resizable-ab.js
@@ -1,4 +1,4 @@
-// |reftest| shell-option(--enable-arraybuffer-resizable) skip-if(!ArrayBuffer.prototype.resize||!xulRuntime.shell) -- resizable-arraybuffer is not enabled unconditionally, requires shell-options
+// |reftest| shell-option(--enable-arraybuffer-resizable) shell-option(--enable-float16array) skip-if(!ArrayBuffer.prototype.resize||!xulRuntime.shell) -- resizable-arraybuffer is not enabled unconditionally, requires shell-options
 // Copyright (C) 2021 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/excessive-offset-throws-sab.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/excessive-offset-throws-sab.js
index bba14855bf..28c58e063e 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/excessive-offset-throws-sab.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/excessive-offset-throws-sab.js
@@ -1,4 +1,4 @@
-// |reftest| skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
+// |reftest| shell-option(--enable-float16array) skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // Copyright (C) 2017 Mozilla Corporation. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/excessive-offset-throws.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/excessive-offset-throws.js
index 17d39e4ea5..f66d7a400e 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/excessive-offset-throws.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/excessive-offset-throws.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/invoked-with-undefined-newtarget-sab.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/invoked-with-undefined-newtarget-sab.js
index d08a6e8f7f..8916c2ac5e 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/invoked-with-undefined-newtarget-sab.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/invoked-with-undefined-newtarget-sab.js
@@ -1,4 +1,4 @@
-// |reftest| skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
+// |reftest| shell-option(--enable-float16array) skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // Copyright (C) 2017 Mozilla Corporation. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/invoked-with-undefined-newtarget.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/invoked-with-undefined-newtarget.js
index 7b8abeb3aa..6a897453d3 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/invoked-with-undefined-newtarget.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/invoked-with-undefined-newtarget.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/is-referenced-sab.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/is-referenced-sab.js
index a7c268a073..637f0a751e 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/is-referenced-sab.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/is-referenced-sab.js
@@ -1,4 +1,4 @@
-// |reftest| skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
+// |reftest| shell-option(--enable-float16array) skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // Copyright (C) 2017 Mozilla Corporation. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/is-referenced.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/is-referenced.js
index 9a7ad5ac4e..40d91ef9a6 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/is-referenced.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/is-referenced.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/length-access-throws-sab.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/length-access-throws-sab.js
index e22085c72a..979c422f45 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/length-access-throws-sab.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/length-access-throws-sab.js
@@ -1,4 +1,4 @@
-// |reftest| skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
+// |reftest| shell-option(--enable-float16array) skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // Copyright (C) 2017 Mozilla Corporation. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/length-access-throws.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/length-access-throws.js
index c05d709abc..a20dbfd51d 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/length-access-throws.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/length-access-throws.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/length-is-symbol-throws-sab.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/length-is-symbol-throws-sab.js
index 61cc16a0cb..8f62bbece4 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/length-is-symbol-throws-sab.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/length-is-symbol-throws-sab.js
@@ -1,4 +1,4 @@
-// |reftest| skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
+// |reftest| shell-option(--enable-float16array) skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // Copyright (C) 2017 Mozilla Corporation. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/length-is-symbol-throws.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/length-is-symbol-throws.js
index f04940f4ee..6bf3208e91 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/length-is-symbol-throws.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/length-is-symbol-throws.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/length-to-number-detachbuffer.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/length-to-number-detachbuffer.js
index 47ff17be0e..d9d01af299 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/length-to-number-detachbuffer.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/length-to-number-detachbuffer.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2017 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/new-instance-extensibility-sab.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/new-instance-extensibility-sab.js
index be15fb3873..3fee45674a 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/new-instance-extensibility-sab.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/new-instance-extensibility-sab.js
@@ -1,4 +1,4 @@
-// |reftest| skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
+// |reftest| shell-option(--enable-float16array) skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // Copyright (C) 2017 Mozilla Corporation. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/new-instance-extensibility.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/new-instance-extensibility.js
index 14be0cdec5..3bf4b39094 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/new-instance-extensibility.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/new-instance-extensibility.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/proto-from-ctor-realm-sab.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/proto-from-ctor-realm-sab.js
index 1da9bed6a2..228d90d808 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/proto-from-ctor-realm-sab.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/proto-from-ctor-realm-sab.js
@@ -1,4 +1,4 @@
-// |reftest| skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
+// |reftest| shell-option(--enable-float16array) skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // Copyright (C) 2017 Mozilla Corporation. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/proto-from-ctor-realm.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/proto-from-ctor-realm.js
index 300629cadc..a0a8b5b575 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/proto-from-ctor-realm.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/proto-from-ctor-realm.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/returns-new-instance-sab.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/returns-new-instance-sab.js
index 17ea189089..feb96f9cd8 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/returns-new-instance-sab.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/returns-new-instance-sab.js
@@ -1,4 +1,4 @@
-// |reftest| skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
+// |reftest| shell-option(--enable-float16array) skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // Copyright (C) 2017 Mozilla Corporation. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/returns-new-instance.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/returns-new-instance.js
index 46bb08e0ec..4e0e9542d8 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/returns-new-instance.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/returns-new-instance.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/toindex-bytelength-sab.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/toindex-bytelength-sab.js
index f95a6366a1..c1d20fe6be 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/toindex-bytelength-sab.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/toindex-bytelength-sab.js
@@ -1,4 +1,4 @@
-// |reftest| skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
+// |reftest| shell-option(--enable-float16array) skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // Copyright (C) 2017 Mozilla Corporation. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/toindex-bytelength.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/toindex-bytelength.js
index 062330df84..3f7ee16dcd 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/toindex-bytelength.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/toindex-bytelength.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/toindex-byteoffset-sab.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/toindex-byteoffset-sab.js
index 8ba2f41b9c..18bac82b01 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/toindex-byteoffset-sab.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/toindex-byteoffset-sab.js
@@ -1,4 +1,4 @@
-// |reftest| skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
+// |reftest| shell-option(--enable-float16array) skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // Copyright (C) 2017 Mozilla Corporation. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/toindex-byteoffset.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/toindex-byteoffset.js
index 66a3629446..b8aa9340c2 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/toindex-byteoffset.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/toindex-byteoffset.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/typedarray-backed-by-sharedarraybuffer.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/typedarray-backed-by-sharedarraybuffer.js
index 2ba3df217a..8fe01c563b 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/typedarray-backed-by-sharedarraybuffer.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/typedarray-backed-by-sharedarraybuffer.js
@@ -1,4 +1,4 @@
-// |reftest| skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
+// |reftest| shell-option(--enable-float16array) skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
 // Copyright (C) 2017 Mozilla Corporation. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/use-custom-proto-if-object-sab.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/use-custom-proto-if-object-sab.js
index 1b67197f02..bf6947d70c 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/use-custom-proto-if-object-sab.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/use-custom-proto-if-object-sab.js
@@ -1,4 +1,4 @@
-// |reftest| skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
+// |reftest| shell-option(--enable-float16array) skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // Copyright (C) 2017 Mozilla Corporation. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/use-custom-proto-if-object.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/use-custom-proto-if-object.js
index aad34833ca..3b0977c01c 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/use-custom-proto-if-object.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/use-custom-proto-if-object.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/use-default-proto-if-custom-proto-is-not-object-sab.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/use-default-proto-if-custom-proto-is-not-object-sab.js
index 21086e7a26..1099370d8e 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/use-default-proto-if-custom-proto-is-not-object-sab.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/use-default-proto-if-custom-proto-is-not-object-sab.js
@@ -1,4 +1,4 @@
-// |reftest| skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
+// |reftest| shell-option(--enable-float16array) skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // Copyright (C) 2017 Mozilla Corporation. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/use-default-proto-if-custom-proto-is-not-object.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/use-default-proto-if-custom-proto-is-not-object.js
index dfef9bdf32..8e35ba0b33 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/use-default-proto-if-custom-proto-is-not-object.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/buffer-arg/use-default-proto-if-custom-proto-is-not-object.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/length-arg/custom-proto-access-throws.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/length-arg/custom-proto-access-throws.js
index d8808efd52..2742751a62 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/length-arg/custom-proto-access-throws.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/length-arg/custom-proto-access-throws.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/length-arg/init-zeros.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/length-arg/init-zeros.js
index 60f2e09349..d99515e9ad 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/length-arg/init-zeros.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/length-arg/init-zeros.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/length-arg/is-infinity-throws-rangeerror.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/length-arg/is-infinity-throws-rangeerror.js
index e2eee55c64..02d9bf50d9 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/length-arg/is-infinity-throws-rangeerror.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/length-arg/is-infinity-throws-rangeerror.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/length-arg/is-negative-integer-throws-rangeerror.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/length-arg/is-negative-integer-throws-rangeerror.js
index b633202456..bdaec2dada 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/length-arg/is-negative-integer-throws-rangeerror.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/length-arg/is-negative-integer-throws-rangeerror.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/length-arg/is-symbol-throws.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/length-arg/is-symbol-throws.js
index a383eb453c..72f961ba9d 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/length-arg/is-symbol-throws.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/length-arg/is-symbol-throws.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/length-arg/new-instance-extensibility.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/length-arg/new-instance-extensibility.js
index 28a76944ff..86616927c7 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/length-arg/new-instance-extensibility.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/length-arg/new-instance-extensibility.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/length-arg/proto-from-ctor-realm.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/length-arg/proto-from-ctor-realm.js
index 02f39b12e5..da803e4c53 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/length-arg/proto-from-ctor-realm.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/length-arg/proto-from-ctor-realm.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/length-arg/returns-object.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/length-arg/returns-object.js
index 25f90a4a1d..63313cb769 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/length-arg/returns-object.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/length-arg/returns-object.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/length-arg/toindex-length.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/length-arg/toindex-length.js
index d84897dfa8..78469b68f1 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/length-arg/toindex-length.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/length-arg/toindex-length.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/length-arg/undefined-newtarget-throws.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/length-arg/undefined-newtarget-throws.js
index 8c43e87b2d..d9cd7cdb15 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/length-arg/undefined-newtarget-throws.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/length-arg/undefined-newtarget-throws.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/length-arg/use-custom-proto-if-object.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/length-arg/use-custom-proto-if-object.js
index 59f7b7f0f0..affc9cb34e 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/length-arg/use-custom-proto-if-object.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/length-arg/use-custom-proto-if-object.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/length-arg/use-default-proto-if-custom-proto-is-not-object.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/length-arg/use-default-proto-if-custom-proto-is-not-object.js
index 6617e5c899..0e14a91595 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/length-arg/use-default-proto-if-custom-proto-is-not-object.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/length-arg/use-default-proto-if-custom-proto-is-not-object.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/no-args/custom-proto-access-throws.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/no-args/custom-proto-access-throws.js
index 5c3a24bd54..10f576962c 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/no-args/custom-proto-access-throws.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/no-args/custom-proto-access-throws.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/no-args/new-instance-extensibility.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/no-args/new-instance-extensibility.js
index e72a6b7e38..555eb2d95b 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/no-args/new-instance-extensibility.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/no-args/new-instance-extensibility.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/no-args/proto-from-ctor-realm.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/no-args/proto-from-ctor-realm.js
index 533d41736f..f5ff2b376a 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/no-args/proto-from-ctor-realm.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/no-args/proto-from-ctor-realm.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/no-args/returns-object.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/no-args/returns-object.js
index 2538dbc5f8..3bc999eb6c 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/no-args/returns-object.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/no-args/returns-object.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/no-args/undefined-newtarget-throws.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/no-args/undefined-newtarget-throws.js
index f238450d16..95384239c9 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/no-args/undefined-newtarget-throws.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/no-args/undefined-newtarget-throws.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/no-args/use-custom-proto-if-object.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/no-args/use-custom-proto-if-object.js
index 420e56e088..1a6627f2fa 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/no-args/use-custom-proto-if-object.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/no-args/use-custom-proto-if-object.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/no-args/use-default-proto-if-custom-proto-is-not-object.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/no-args/use-default-proto-if-custom-proto-is-not-object.js
index ca9f018f0d..f13ec9f692 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/no-args/use-default-proto-if-custom-proto-is-not-object.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/no-args/use-default-proto-if-custom-proto-is-not-object.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/as-array-returns.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/as-array-returns.js
index abbc8b5979..11303c95be 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/as-array-returns.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/as-array-returns.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/as-generator-iterable-returns.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/as-generator-iterable-returns.js
index a86d9ef1a5..5d6a865645 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/as-generator-iterable-returns.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/as-generator-iterable-returns.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/conversion-operation-consistent-nan.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/conversion-operation-consistent-nan.js
index f71f68003f..f3103232ca 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/conversion-operation-consistent-nan.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/conversion-operation-consistent-nan.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/conversion-operation.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/conversion-operation.js
index b8c41f1de1..168036bf59 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/conversion-operation.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/conversion-operation.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/custom-proto-access-throws.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/custom-proto-access-throws.js
index c34af4e31b..71b04f1f03 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/custom-proto-access-throws.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/custom-proto-access-throws.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/iterated-array-changed-by-tonumber.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/iterated-array-changed-by-tonumber.js
new file mode 100644
index 0000000000..6251655196
--- /dev/null
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/iterated-array-changed-by-tonumber.js
@@ -0,0 +1,46 @@
+// |reftest| shell-option(--enable-float16array)
+// Copyright (C) 2024 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-typedarray
+description: >
+  Modifications to input array after iteration are handled correctly.
+info: |
+  TypedArray ( ...args )
+
+  ...
+  6. Else,
+    ...
+    b. If firstArgument is an Object, then
+      ...
+      iv. Else,
+        ...
+        2. Let usingIterator be ? GetMethod(firstArgument, @@iterator).
+        3. If usingIterator is not undefined, then
+          a. Let values be ? IteratorToList(? GetIteratorFromMethod(firstArgument, usingIterator)).
+          b. Perform ? InitializeTypedArrayFromList(O, values).
+        ...
+includes: [testTypedArray.js]
+features: [TypedArray]
+---*/
+
+testWithTypedArrayConstructors(function(TypedArray) {
+  let values = [0, {
+    valueOf() {
+      // Removes all array elements. Caller must have saved all elements.
+      values.length = 0;
+      return 100;
+    }
+  }, 2];
+
+  // Constructor called with array which uses the built-in array iterator.
+  var ta = new TypedArray(values);
+
+  assert.sameValue(ta.length, 3);
+  assert.sameValue(ta[0], 0);
+  assert.sameValue(ta[1], 100);
+  assert.sameValue(ta[2], 2);
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/iterated-array-with-modified-array-iterator.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/iterated-array-with-modified-array-iterator.js
new file mode 100644
index 0000000000..fe1f672adb
--- /dev/null
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/iterated-array-with-modified-array-iterator.js
@@ -0,0 +1,52 @@
+// |reftest| shell-option(--enable-float16array)
+// Copyright (C) 2024 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-typedarray
+description: >
+  Modifications to input array after iteration are handled correctly.
+info: |
+  TypedArray ( ...args )
+
+  ...
+  6. Else,
+    ...
+    b. If firstArgument is an Object, then
+      ...
+      iv. Else,
+        ...
+        2. Let usingIterator be ? GetMethod(firstArgument, @@iterator).
+        3. If usingIterator is not undefined, then
+          a. Let values be ? IteratorToList(? GetIteratorFromMethod(firstArgument, usingIterator)).
+          b. Perform ? InitializeTypedArrayFromList(O, values).
+        ...
+includes: [testTypedArray.js]
+features: [TypedArray]
+---*/
+
+let ArrayIteratorPrototype = Object.getPrototypeOf([].values());
+let values;
+
+// Modify the built-in ArrayIteratorPrototype `next` method.
+ArrayIteratorPrototype.next = function() {
+  let done = values.length === 0;
+  let value = values.pop();
+  return {value, done};
+};
+
+testWithTypedArrayConstructors(function(TypedArray) {
+  // Reset `values` array.
+  values = [1, 2, 3, 4];
+
+  // Constructor called with array which uses the modified array iterator.
+  var ta = new TypedArray([0]);
+
+  assert.sameValue(ta.length, 4);
+  assert.sameValue(ta[0], 4);
+  assert.sameValue(ta[1], 3);
+  assert.sameValue(ta[2], 2);
+  assert.sameValue(ta[3], 1);
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/iterating-throws.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/iterating-throws.js
index 7867b4a3a1..4327297746 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/iterating-throws.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/iterating-throws.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/iterator-is-null-as-array-like.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/iterator-is-null-as-array-like.js
index de906f06b4..b1854e4dbe 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/iterator-is-null-as-array-like.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/iterator-is-null-as-array-like.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2020 Alexey Shvayka. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/iterator-not-callable-throws.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/iterator-not-callable-throws.js
index 500437a3ed..d3d9f7c608 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/iterator-not-callable-throws.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/iterator-not-callable-throws.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/iterator-throws.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/iterator-throws.js
index 9b9c57a11b..4dcb325608 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/iterator-throws.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/iterator-throws.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/length-excessive-throws.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/length-excessive-throws.js
index 1d681cfe61..5a18692653 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/length-excessive-throws.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/length-excessive-throws.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/length-is-symbol-throws.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/length-is-symbol-throws.js
index 1e2f7e23c9..667cbd3184 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/length-is-symbol-throws.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/length-is-symbol-throws.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/length-throws.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/length-throws.js
index 8dccea8901..c9bb5b8de6 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/length-throws.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/length-throws.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/new-instance-extensibility.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/new-instance-extensibility.js
index 25345c0979..8508b38961 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/new-instance-extensibility.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/new-instance-extensibility.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/proto-from-ctor-realm.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/proto-from-ctor-realm.js
index 213fbfbdd8..8c7a15f89b 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/proto-from-ctor-realm.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/proto-from-ctor-realm.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/returns.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/returns.js
index 7b795eed85..cd210c0166 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/returns.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/returns.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/shell.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/shell.js
index 4d14a8634d..665ef0a961 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/shell.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/shell.js
@@ -53,7 +53,22 @@ var byteConversionValues = {
     -4294967296, // - ( 2 ** 32 )
     Infinity,
     -Infinity,
-    0
+    0,
+    2049,                         // an integer which rounds down under ties-to-even when cast to float16
+    2051,                         // an integer which rounds up under ties-to-even when cast to float16
+    0.00006103515625,             // smallest normal float16
+    0.00006097555160522461,       // largest subnormal float16
+    5.960464477539063e-8,         // smallest float16
+    2.9802322387695312e-8,        // largest double which rounds to 0 when cast to float16
+    2.980232238769532e-8,         // smallest double which does not round to 0 when cast to float16
+    8.940696716308594e-8,         // a double which rounds up to a subnormal under ties-to-even when cast to float16
+    1.4901161193847656e-7,        // a double which rounds down to a subnormal under ties-to-even when cast to float16
+    1.490116119384766e-7,         // the next double above the one on the previous line one
+    65504,                        // max finite float16
+    65520,                        // smallest double which rounds to infinity when cast to float16
+    65519.99999999999,            // largest double which does not round to infinity when cast to float16
+    0.000061005353927612305,      // smallest double which rounds to a non-subnormal when cast to float16
+    0.0000610053539276123         // largest double which rounds to a subnormal when cast to float16
   ],
 
   expected: {
@@ -98,7 +113,22 @@ var byteConversionValues = {
       0,    // -4294967296
       0,    // Infinity
       0,    // -Infinity
-      0
+      0,    // 0
+      1,    // 2049
+      3,    // 2051
+      0,    // 0.00006103515625
+      0,    // 0.00006097555160522461
+      0,    // 5.960464477539063e-8
+      0,    // 2.9802322387695312e-8
+      0,    // 2.980232238769532e-8
+      0,    // 8.940696716308594e-8
+      0,    // 1.4901161193847656e-7
+      0,    // 1.490116119384766e-7
+      -32,  // 65504
+      -16,  // 65520
+      -17,  // 65519.99999999999
+      0,    // 0.000061005353927612305
+      0     // 0.0000610053539276123
     ],
     Uint8: [
       127, // 127
@@ -141,7 +171,22 @@ var byteConversionValues = {
       0,   // -4294967296
       0,   // Infinity
       0,   // -Infinity
-      0
+      0,   // 0
+      1,   // 2049
+      3,   // 2051
+      0,   // 0.00006103515625
+      0,   // 0.00006097555160522461
+      0,   // 5.960464477539063e-8
+      0,   // 2.9802322387695312e-8
+      0,   // 2.980232238769532e-8
+      0,   // 8.940696716308594e-8
+      0,   // 1.4901161193847656e-7
+      0,   // 1.490116119384766e-7
+      224, // 65504
+      240, // 65520
+      239, // 65519.99999999999
+      0,   // 0.000061005353927612305
+      0    // 0.0000610053539276123
     ],
     Uint8Clamped: [
       127, // 127
@@ -184,7 +229,22 @@ var byteConversionValues = {
       0,   // -4294967296
       255, // Infinity
       0,   // -Infinity
-      0
+      0,   // 0
+      255, // 2049
+      255, // 2051
+      0,   // 0.00006103515625
+      0,   // 0.00006097555160522461
+      0,   // 5.960464477539063e-8
+      0,   // 2.9802322387695312e-8
+      0,   // 2.980232238769532e-8
+      0,   // 8.940696716308594e-8
+      0,   // 1.4901161193847656e-7
+      0,   // 1.490116119384766e-7
+      255, // 65504
+      255, // 65520
+      255, // 65519.99999999999
+      0,   // 0.000061005353927612305
+      0    // 0.0000610053539276123
     ],
     Int16: [
       127,    // 127
@@ -227,7 +287,22 @@ var byteConversionValues = {
       0,      // -4294967296
       0,      // Infinity
       0,      // -Infinity
-      0
+      0,      // 0
+      2049,   // 2049
+      2051,   // 2051
+      0,      // 0.00006103515625
+      0,      // 0.00006097555160522461
+      0,      // 5.960464477539063e-8
+      0,      // 2.9802322387695312e-8
+      0,      // 2.980232238769532e-8
+      0,      // 8.940696716308594e-8
+      0,      // 1.4901161193847656e-7
+      0,      // 1.490116119384766e-7
+      -32,    // 65504
+      -16,    // 65520
+      -17,    // 65519.99999999999
+      0,      // 0.000061005353927612305
+      0       // 0.0000610053539276123
     ],
     Uint16: [
       127,   // 127
@@ -270,7 +345,22 @@ var byteConversionValues = {
       0,     // -4294967296
       0,     // Infinity
       0,     // -Infinity
-      0
+      0,     // 0
+      2049,  // 2049
+      2051,  // 2051
+      0,     // 0.00006103515625
+      0,     // 0.00006097555160522461
+      0,     // 5.960464477539063e-8
+      0,     // 2.9802322387695312e-8
+      0,     // 2.980232238769532e-8
+      0,     // 8.940696716308594e-8
+      0,     // 1.4901161193847656e-7
+      0,     // 1.490116119384766e-7
+      65504, // 65504
+      65520, // 65520
+      65519, // 65519.99999999999
+      0,     // 0.000061005353927612305
+      0      // 0.0000610053539276123
     ],
     Int32: [
       127,         // 127
@@ -313,7 +403,22 @@ var byteConversionValues = {
       0,           // -4294967296
       0,           // Infinity
       0,           // -Infinity
-      0
+      0,           // 0
+      2049,        // 2049
+      2051,        // 2051
+      0,           // 0.00006103515625
+      0,           // 0.00006097555160522461
+      0,           // 5.960464477539063e-8
+      0,           // 2.9802322387695312e-8
+      0,           // 2.980232238769532e-8
+      0,           // 8.940696716308594e-8
+      0,           // 1.4901161193847656e-7
+      0,           // 1.490116119384766e-7
+      65504,       // 65504
+      65520,       // 65520
+      65519,       // 65519.99999999999
+      0,           // 0.000061005353927612305
+      0            // 0.0000610053539276123
     ],
     Uint32: [
       127,        // 127
@@ -356,93 +461,138 @@ var byteConversionValues = {
       0,          // -4294967296
       0,          // Infinity
       0,          // -Infinity
-      0
+      0,          // 0
+      2049,       // 2049
+      2051,       // 2051
+      0,          // 0.00006103515625
+      0,          // 0.00006097555160522461
+      0,          // 5.960464477539063e-8
+      0,          // 2.9802322387695312e-8
+      0,          // 2.980232238769532e-8
+      0,          // 8.940696716308594e-8
+      0,          // 1.4901161193847656e-7
+      0,          // 1.490116119384766e-7
+      65504,      // 65504
+      65520,      // 65520
+      65519,      // 65519.99999999999
+      0,          // 0.000061005353927612305
+      0           // 0.0000610053539276123
     ],
     Float16: [
-      127,                  // 127
-      128,                  // 128
-      32768,                // 32767
-      32768,                // 32768
-      Infinity,             // 2147483647
-      Infinity,             // 2147483648
-      255,                  // 255
-      256,                  // 256
-      Infinity,             // 65535
-      Infinity,             // 65536
-      Infinity,             // 4294967295
-      Infinity,             // 4294967296
-      Infinity,             // 9007199254740991
-      Infinity,             // 9007199254740992
-      1.099609375,          // 1.1
-      0.0999755859375,      // 0.1
-      0.5,                  // 0.5
-      0.5,                  // 0.50000001,
-      0.60009765625,        // 0.6
-      0.7001953125,         // 0.7
-      NaN,                  // undefined
-      -1,                   // -1
-      -0,                   // -0
-      -0.0999755859375,     // -0.1
-      -1.099609375,         // -1.1
-      NaN,                  // NaN
-      -127,                 // -127
-      -128,                 // -128
-      -32768,               // -32767
-      -32768,               // -32768
-      -Infinity,            // -2147483647
-      -Infinity,            // -2147483648
-      -255,                 // -255
-      -256,                 // -256
-      -Infinity,            // -65535
-      -Infinity,            // -65536
-      -Infinity,            // -4294967295
-      -Infinity,            // -4294967296
-      Infinity,             // Infinity
-      -Infinity,            // -Infinity
-      0
+      127,                    // 127
+      128,                    // 128
+      32768,                  // 32767
+      32768,                  // 32768
+      Infinity,               // 2147483647
+      Infinity,               // 2147483648
+      255,                    // 255
+      256,                    // 256
+      Infinity,               // 65535
+      Infinity,               // 65536
+      Infinity,               // 4294967295
+      Infinity,               // 4294967296
+      Infinity,               // 9007199254740991
+      Infinity,               // 9007199254740992
+      1.099609375,            // 1.1
+      0.0999755859375,        // 0.1
+      0.5,                    // 0.5
+      0.5,                    // 0.50000001,
+      0.60009765625,          // 0.6
+      0.7001953125,           // 0.7
+      NaN,                    // undefined
+      -1,                     // -1
+      -0,                     // -0
+      -0.0999755859375,       // -0.1
+      -1.099609375,           // -1.1
+      NaN,                    // NaN
+      -127,                   // -127
+      -128,                   // -128
+      -32768,                 // -32767
+      -32768,                 // -32768
+      -Infinity,              // -2147483647
+      -Infinity,              // -2147483648
+      -255,                   // -255
+      -256,                   // -256
+      -Infinity,              // -65535
+      -Infinity,              // -65536
+      -Infinity,              // -4294967295
+      -Infinity,              // -4294967296
+      Infinity,               // Infinity
+      -Infinity,              // -Infinity
+      0,                      // 0
+      2048,                   // 2049
+      2052,                   // 2051
+      0.00006103515625,       // 0.00006103515625
+      0.00006097555160522461, // 0.00006097555160522461
+      5.960464477539063e-8,   // 5.960464477539063e-8
+      0,                      // 2.9802322387695312e-8
+      5.960464477539063e-8,   // 2.980232238769532e-8
+      1.1920928955078125e-7,  // 8.940696716308594e-8
+      1.1920928955078125e-7,  // 1.4901161193847656e-7
+      1.7881393432617188e-7,  // 1.490116119384766e-7
+      65504,                  // 65504
+      Infinity,               // 65520
+      65504,                  // 65519.99999999999
+      0.00006103515625,       // 0.000061005353927612305
+      0.00006097555160522461  // 0.0000610053539276123
     ],
     Float32: [
-      127,                  // 127
-      128,                  // 128
-      32767,                // 32767
-      32768,                // 32768
-      2147483648,           // 2147483647
-      2147483648,           // 2147483648
-      255,                  // 255
-      256,                  // 256
-      65535,                // 65535
-      65536,                // 65536
-      4294967296,           // 4294967295
-      4294967296,           // 4294967296
-      9007199254740992,     // 9007199254740991
-      9007199254740992,     // 9007199254740992
-      1.100000023841858,    // 1.1
-      0.10000000149011612,  // 0.1
-      0.5,                  // 0.5
-      0.5,                  // 0.50000001,
-      0.6000000238418579,   // 0.6
-      0.699999988079071,    // 0.7
-      NaN,                  // undefined
-      -1,                   // -1
-      -0,                   // -0
-      -0.10000000149011612, // -0.1
-      -1.100000023841858,   // -1.1
-      NaN,                  // NaN
-      -127,                 // -127
-      -128,                 // -128
-      -32767,               // -32767
-      -32768,               // -32768
-      -2147483648,          // -2147483647
-      -2147483648,          // -2147483648
-      -255,                 // -255
-      -256,                 // -256
-      -65535,               // -65535
-      -65536,               // -65536
-      -4294967296,          // -4294967295
-      -4294967296,          // -4294967296
-      Infinity,             // Infinity
-      -Infinity,            // -Infinity
-      0
+      127,                     // 127
+      128,                     // 128
+      32767,                   // 32767
+      32768,                   // 32768
+      2147483648,              // 2147483647
+      2147483648,              // 2147483648
+      255,                     // 255
+      256,                     // 256
+      65535,                   // 65535
+      65536,                   // 65536
+      4294967296,              // 4294967295
+      4294967296,              // 4294967296
+      9007199254740992,        // 9007199254740991
+      9007199254740992,        // 9007199254740992
+      1.100000023841858,       // 1.1
+      0.10000000149011612,     // 0.1
+      0.5,                     // 0.5
+      0.5,                     // 0.50000001,
+      0.6000000238418579,      // 0.6
+      0.699999988079071,       // 0.7
+      NaN,                     // undefined
+      -1,                      // -1
+      -0,                      // -0
+      -0.10000000149011612,    // -0.1
+      -1.100000023841858,      // -1.1
+      NaN,                     // NaN
+      -127,                    // -127
+      -128,                    // -128
+      -32767,                  // -32767
+      -32768,                  // -32768
+      -2147483648,             // -2147483647
+      -2147483648,             // -2147483648
+      -255,                    // -255
+      -256,                    // -256
+      -65535,                  // -65535
+      -65536,                  // -65536
+      -4294967296,             // -4294967295
+      -4294967296,             // -4294967296
+      Infinity,                // Infinity
+      -Infinity,               // -Infinity
+      0,                       // 0
+      2049,                    // 2049
+      2051,                    // 2051
+      0.00006103515625,        // 0.00006103515625
+      0.00006097555160522461,  // 0.00006097555160522461
+      5.960464477539063e-8,    // 5.960464477539063e-8
+      2.9802322387695312e-8,   // 2.9802322387695312e-8
+      2.9802322387695312e-8,   // 2.980232238769532e-8
+      8.940696716308594e-8,    // 8.940696716308594e-8
+      1.4901161193847656e-7,   // 1.4901161193847656e-7
+      1.4901161193847656e-7,   // 1.490116119384766e-7
+      65504,                   // 65504
+      65520,                   // 65520
+      65520,                   // 65519.99999999999
+      0.000061005353927612305, // 0.000061005353927612305
+      0.000061005353927612305  // 0.0000610053539276123
     ],
     Float64: [
       127,         // 127
@@ -485,7 +635,22 @@ var byteConversionValues = {
       -4294967296, // -4294967296
       Infinity,    // Infinity
       -Infinity,   // -Infinity
-      0
+      0,           // 0
+      2049,                    // 2049
+      2051,                    // 2051
+      0.00006103515625,        // 0.00006103515625
+      0.00006097555160522461,  // 0.00006097555160522461
+      5.960464477539063e-8,    // 5.960464477539063e-8
+      2.9802322387695312e-8,   // 2.9802322387695312e-8
+      2.980232238769532e-8,    // 2.980232238769532e-8
+      8.940696716308594e-8,    // 8.940696716308594e-8
+      1.4901161193847656e-7,   // 1.4901161193847656e-7
+      1.490116119384766e-7,    // 1.490116119384766e-7
+      65504,                   // 65504
+      65520,                   // 65520
+      65519.99999999999,       // 65519.99999999999
+      0.000061005353927612305, // 0.000061005353927612305
+      0.0000610053539276123    // 0.0000610053539276123
     ]
   }
 };
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/throws-from-property.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/throws-from-property.js
index 574b628f9e..364db4a15b 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/throws-from-property.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/throws-from-property.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/throws-setting-obj-to-primitive-typeerror.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/throws-setting-obj-to-primitive-typeerror.js
index 1e0cba0b5a..ea5d804b38 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/throws-setting-obj-to-primitive-typeerror.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/throws-setting-obj-to-primitive-typeerror.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/throws-setting-obj-to-primitive.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/throws-setting-obj-to-primitive.js
index b70a039911..79e87b69e1 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/throws-setting-obj-to-primitive.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/throws-setting-obj-to-primitive.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/throws-setting-obj-tostring.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/throws-setting-obj-tostring.js
index 9940e1e608..4b2bbe8b8e 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/throws-setting-obj-tostring.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/throws-setting-obj-tostring.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/throws-setting-obj-valueof-typeerror.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/throws-setting-obj-valueof-typeerror.js
index 746e244537..118bed7af1 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/throws-setting-obj-valueof-typeerror.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/throws-setting-obj-valueof-typeerror.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/throws-setting-obj-valueof.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/throws-setting-obj-valueof.js
index 7bb03318c0..96acc357f5 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/throws-setting-obj-valueof.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/throws-setting-obj-valueof.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/throws-setting-property.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/throws-setting-property.js
index 0e5f93d30a..ff5a754804 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/throws-setting-property.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/throws-setting-property.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/throws-setting-symbol-property.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/throws-setting-symbol-property.js
index f30ef12f5c..3a7d48165c 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/throws-setting-symbol-property.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/throws-setting-symbol-property.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/undefined-newtarget-throws.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/undefined-newtarget-throws.js
index b5b6b00fa1..a93f077fd1 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/undefined-newtarget-throws.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/undefined-newtarget-throws.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/use-custom-proto-if-object.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/use-custom-proto-if-object.js
index 996f9d659a..8d766e8b21 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/use-custom-proto-if-object.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/use-custom-proto-if-object.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/use-default-proto-if-custom-proto-is-not-object.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/use-default-proto-if-custom-proto-is-not-object.js
index 7ae957d8a1..8a0afbb04e 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/use-default-proto-if-custom-proto-is-not-object.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/object-arg/use-default-proto-if-custom-proto-is-not-object.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/typedarray-arg/custom-proto-access-throws.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/typedarray-arg/custom-proto-access-throws.js
index 9668bd269b..a2c8c95545 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/typedarray-arg/custom-proto-access-throws.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/typedarray-arg/custom-proto-access-throws.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/typedarray-arg/new-instance-extensibility.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/typedarray-arg/new-instance-extensibility.js
index 59d5efba90..789160306e 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/typedarray-arg/new-instance-extensibility.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/typedarray-arg/new-instance-extensibility.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/typedarray-arg/other-ctor-returns-new-typedarray.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/typedarray-arg/other-ctor-returns-new-typedarray.js
index 8f6d0f51fe..916b476121 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/typedarray-arg/other-ctor-returns-new-typedarray.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/typedarray-arg/other-ctor-returns-new-typedarray.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/typedarray-arg/proto-from-ctor-realm.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/typedarray-arg/proto-from-ctor-realm.js
index d7aae2b83f..ec99dc3bc4 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/typedarray-arg/proto-from-ctor-realm.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/typedarray-arg/proto-from-ctor-realm.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/typedarray-arg/returns-new-instance.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/typedarray-arg/returns-new-instance.js
index b59e86f5a2..286eb9e91c 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/typedarray-arg/returns-new-instance.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/typedarray-arg/returns-new-instance.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/typedarray-arg/same-ctor-buffer-ctor-species-null.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/typedarray-arg/same-ctor-buffer-ctor-species-null.js
index 2dc3b4bd0a..b20e77b00c 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/typedarray-arg/same-ctor-buffer-ctor-species-null.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/typedarray-arg/same-ctor-buffer-ctor-species-null.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/typedarray-arg/same-ctor-buffer-ctor-species-undefined.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/typedarray-arg/same-ctor-buffer-ctor-species-undefined.js
index 53904f8aa1..48a27ae56b 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/typedarray-arg/same-ctor-buffer-ctor-species-undefined.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/typedarray-arg/same-ctor-buffer-ctor-species-undefined.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/typedarray-arg/same-ctor-returns-new-cloned-typedarray.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/typedarray-arg/same-ctor-returns-new-cloned-typedarray.js
index 95d273cff2..f69be105c1 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/typedarray-arg/same-ctor-returns-new-cloned-typedarray.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/typedarray-arg/same-ctor-returns-new-cloned-typedarray.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/typedarray-arg/src-typedarray-big-throws.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/typedarray-arg/src-typedarray-big-throws.js
index d7aaead773..76a38e1cb7 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/typedarray-arg/src-typedarray-big-throws.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/typedarray-arg/src-typedarray-big-throws.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2018 Valerie Young. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/typedarray-arg/undefined-newtarget-throws.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/typedarray-arg/undefined-newtarget-throws.js
index 4ea662775e..821fc3d229 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/typedarray-arg/undefined-newtarget-throws.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/typedarray-arg/undefined-newtarget-throws.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/typedarray-arg/use-custom-proto-if-object.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/typedarray-arg/use-custom-proto-if-object.js
index c52ac6df1a..0d08f50b3a 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/typedarray-arg/use-custom-proto-if-object.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/typedarray-arg/use-custom-proto-if-object.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
diff --git a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/typedarray-arg/use-default-proto-if-custom-proto-is-not-object.js b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/typedarray-arg/use-default-proto-if-custom-proto-is-not-object.js
index e82396a021..d4525a4cfc 100644
--- a/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/typedarray-arg/use-default-proto-if-custom-proto-is-not-object.js
+++ b/js/src/tests/test262/built-ins/TypedArrayConstructors/ctors/typedarray-arg/use-default-proto-if-custom-proto-is-not-object.js
@@ -1,3 +1,4 @@
+// |reftest| shell-option(--enable-float16array)
 // Copyright (C) 2016 the V8 project authors. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
-- 
cgit v1.2.3