a9270e2bde
This is a reland of 80843eda31
Original change's description:
> [torque] Allow storing to bitfield structs that are stored in Smis
>
> This change:
> 1. Updates the Torque compiler to allow direct access to bitfields that
> are packed within Smi values, which previously would have required a
> separate untagging step,
> 2. Updates JSRegExpStringIterator to represent its flags in Torque,
> 3. Adds reduction cases in MachineOperatorReducer for when the input to
> a branch or the left-hand side of a Word32Equals is based on a 64-bit
> shift-and-mask operation which has been truncated to 32 bits, as is
> the case in the code generated by step 1, and
> 4. Adds a reduction case in MachineOperatorReducer to remove an extra
> Word64And operation added by step 1.
>
> Bug: v8:7793
> Change-Id: Ib4ac2def6211b3cae6be25a8b2a644be5c7d6d3f
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2119225
> Commit-Queue: Seth Brenith <seth.brenith@microsoft.com>
> Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#67290}
Bug: v8:7793
Change-Id: I783b6ec080042fec0e922927f6675dede458a072
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2159731
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Commit-Queue: Tobias Tebbi <tebbi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67305}
93 lines
2.3 KiB
JavaScript
93 lines
2.3 KiB
JavaScript
// Copyright 2018 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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(function TestReceiverNonString() {
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const iter = 'a'.matchAll(/./g);
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assertThrows(
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() => iter.next.call(0),
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TypeError
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);
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})();
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(function TestAncestry() {
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const iterProto = Object.getPrototypeOf('a'.matchAll(/./g));
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const arrProto = Object.getPrototypeOf([][Symbol.iterator]());
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assertSame(Object.getPrototypeOf(iterProto), Object.getPrototypeOf(arrProto));
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})();
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function TestNoMatch(string, regex_or_string) {
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const next_result = string.matchAll(regex_or_string).next();
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assertSame(undefined, next_result.value);
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assertTrue(next_result.done);
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}
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TestNoMatch('a', /b/g);
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TestNoMatch('a', 'b');
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(function NonGlobalRegex() {
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assertThrows(
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() => { const iter = 'ab'.matchAll(/./); },
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TypeError);
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})();
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function TestGlobalRegex(regex_or_string) {
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const iter = 'ab'.matchAll(regex_or_string);
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let next_result = iter.next();
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assertEquals(['a'], next_result.value);
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assertFalse(next_result.done);
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next_result = iter.next();
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assertEquals(['b'], next_result.value);
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assertFalse(next_result.done);
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next_result = iter.next();
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assertSame(undefined, next_result.value);
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assertTrue(next_result.done);
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}
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TestGlobalRegex(/./g);
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TestGlobalRegex('.');
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function TestEmptyGlobalRegExp(regex_or_string) {
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const iter = 'd'.matchAll(regex_or_string);
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let next_result = iter.next();
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assertEquals([''], next_result.value);
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assertFalse(next_result.done);
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next_result = iter.next();
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assertEquals([''], next_result.value);
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assertFalse(next_result.done);
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next_result = iter.next();
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assertSame(undefined, next_result.value);
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assertTrue(next_result.done);
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}
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TestEmptyGlobalRegExp(undefined);
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TestEmptyGlobalRegExp(/(?:)/g);
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TestEmptyGlobalRegExp('');
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(function TestGlobalRegExpLastIndex() {
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const regex = /./g;
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const string = 'abc';
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regex.exec(string);
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assertSame(1, regex.lastIndex);
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const iter = string.matchAll(regex);
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// Verify an internal RegExp is created and mutations to the provided RegExp
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// are not abservered.
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regex.exec(string);
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assertSame(2, regex.lastIndex);
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let next_result = iter.next();
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assertEquals(['b'], next_result.value);
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assertFalse(next_result.done);
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assertSame(2, regex.lastIndex);
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})();
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