cccbd5f123
This relands commit 7c32fa05df.
Some test cases need to be updated, since we will bail out to TurboFan
where previously Liftoff was happy to run, when SIMD is not supported.
Original change's description:
> [wasm-simd][liftoff] Check CpuFeatures for SIMD support
>
> If Wasm simd128 is not supported on this particular hardware, we bail
> out to TurboFan.
>
> Bug: v8:9909
> Change-Id: Ie46e154426783ba099b7c0facc906670cda1bdd0
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2029427
> Reviewed-by: Clemens Backes <clemensb@chromium.org>
> Commit-Queue: Zhi An Ng <zhin@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#66055}
Bug: v8:9909
Bug: v8:10169
Change-Id: I850e1fe6bfbd12fb2eec052aa8367624c09f7a08
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2030354
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66090}
67 lines
2.0 KiB
JavaScript
67 lines
2.0 KiB
JavaScript
// Copyright 2020 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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// Flags: --experimental-wasm-simd
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load('test/mjsunit/wasm/wasm-module-builder.js');
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// Tests function calls containing s128 parameters. It also checks that
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// lowering of simd calls are correct, so we create 2 functions with s128
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// arguments: function 2 has a single s128 parameter, function 3 has a i32 then
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// s128, to ensure that the arguments in different indices are correctly lowered.
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(function TestSimd128Params() {
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const builder = new WasmModuleBuilder();
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builder.addImportedMemory('m', 'imported_mem', 1, 2);
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builder
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.addFunction("main", makeSig([], []))
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.addBodyWithEnd([
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kExprI32Const, 0,
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kSimdPrefix, kExprS128LoadMem, 0, 0,
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kExprCallFunction, 0x01,
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kExprEnd,
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]);
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// Writes s128 argument to memory starting byte 16.
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builder
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.addFunction("function2", makeSig([kWasmS128], []))
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.addBodyWithEnd([
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kExprI32Const, 16,
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kExprLocalGet, 0,
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kSimdPrefix, kExprS128StoreMem, 0, 0,
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kExprI32Const, 9, // This constant doesn't matter.
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kExprLocalGet, 0,
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kExprCallFunction, 0x02,
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kExprEnd,
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]);
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// Writes s128 argument to memory starting byte 32.
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builder
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.addFunction("function3", makeSig([kWasmI32, kWasmS128], []))
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.addBodyWithEnd([
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kExprI32Const, 32,
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kExprLocalGet, 1,
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kSimdPrefix, kExprS128StoreMem, 0, 0,
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kExprEnd,
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]);
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builder.addExport('main', 0);
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var memory = new WebAssembly.Memory({initial:1, maximum:2});
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const instance = builder.instantiate({m: {imported_mem: memory}});
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const arr = new Uint8Array(memory.buffer);
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// Fill the initial memory with some values, this is read by main and passed
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// as arguments to function2, and then to function3.
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for (let i = 0; i < 16; i++) {
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arr[i] = i * 2;
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}
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instance.exports.main();
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for (let i = 0; i < 16; i++) {
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assertEquals(arr[i], arr[i+16]);
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assertEquals(arr[i], arr[i+32]);
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}
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})();
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