v8/test/mjsunit/regress/regress-crbug-932034.js

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Reland "[builtins]: Optimize CreateTypedArray to use element size log 2 for calculations." This is a reland of c9ef0405c786c86f5ad9755b9b3573d2a43d9757 Original change's description: > [builtins]: Optimize CreateTypedArray to use element size log 2 for calculations. > > TypedArrayElementsInfo now represents an element's size as a log 2 and typed as > uintptr. This simplifies and speeds up (avoids possible HeapNumber allocations) a > number of calculations: > > - Number of Elements (length) -> Byte Length - is now a WordShl > - Byte Length -> Number of Elements (length) - is now a WordShr > - Testing alignment (byte offset or length) - is now a WordAnd > > These element/byte length related calculations are encapsulated in > TypedArrayElementsInfo as struct methods. > > This reduces the size of CreateTypedArray by 2.125 KB (24%) on Mac x64.release: > - Before: 9,088 > - After: 6,896 > > This improves the performance of the following microbencmarks > - TypedArrays-ConstructWithBuffer: ~87% > - TypedArrays-SubarrayNoSpecies: ~28% > > Bug: v8:7161 > Change-Id: I2239fd0e0af9d3ad55cd52318088d3c7c913ae44 > Reviewed-on: https://chromium-review.googlesource.com/c/1456299 > Commit-Queue: Peter Wong <peter.wm.wong@gmail.com> > Reviewed-by: Jakob Gruber <jgruber@chromium.org> > Reviewed-by: Simon Zünd <szuend@chromium.org> > Cr-Commit-Position: refs/heads/master@{#59531} Bug: v8:7161, chromium:932034 Change-Id: I5c3dc34c549234417f95b404e7d49b2fd496fa69 Reviewed-on: https://chromium-review.googlesource.com/c/1476306 Commit-Queue: Peter Wong <peter.wm.wong@gmail.com> Reviewed-by: Jakob Gruber <jgruber@chromium.org> Reviewed-by: Simon Zünd <szuend@chromium.org> Cr-Commit-Position: refs/heads/master@{#59728}
2019-02-12 12:57:31 +00:00
// Copyright 2019 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --allow-natives-syntax --mock-arraybuffer-allocator
// Verify on 32-bit architectures, a byte length overflow is handled gracefully.
try {
new BigInt64Array(%MaxSmi());
} catch(e) {
assertInstanceof(e, RangeError);
}