v8/test/mjsunit/wasm/empirical_max_memory.js
Camillo Bruni a345a442d3 [d8][mjsunit][tools] Improve d8 file API
- Add d8.file.read() and d8.file.execute() helpers
- Change tools and tests to use new d8.file helper
- Unify error throwing in v8::Shell::ReadFile

Change-Id: I5ef4cb27f217508a367106f01e872a4059d5e399
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2928505
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74883}
2021-06-01 13:37:57 +00:00

84 lines
2.5 KiB
JavaScript

// Copyright 2018 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: --expose-wasm
d8.file.execute('test/mjsunit/wasm/wasm-module-builder.js');
let k1GiB = 1 * 1024 * 1024 * 1024;
let k4GiB = 4 * k1GiB;
// TODO(4153): Raise this to 4GiB, but only on 64-bit platforms.
let kMaxMemory = 2 * k1GiB - kPageSize;
(function Test() {
var memory;
function BuildAccessors(type, load_opcode, store_opcode) {
builder = new WasmModuleBuilder();
builder.addImportedMemory("i", "mem");
builder.addFunction("load", makeSig([kWasmI32], [type]))
.addBody([ // --
kExprLocalGet, 0, // --
load_opcode, 0, 0, // --
]) // --
.exportFunc();
builder.addFunction("store", makeSig([kWasmI32, type], []))
.addBody([ // --
kExprLocalGet, 0, // --
kExprLocalGet, 1, // --
store_opcode, 0, 0, // --
]) // --
.exportFunc();
let i = builder.instantiate({i: {mem: memory}});
return {load: i.exports.load, store: i.exports.store};
}
function probe(a, f) {
print("------------------------");
let stride = kPageSize * 32; // Don't check every page to save time.
let max = kMaxMemory;
for (let i = 0; i < max; i += stride) {
a.store(i, f(i));
}
for (let i = 0; i < max; i += stride) {
assertEquals(f(i), a.load(i));
}
}
try {
let kPages = kMaxMemory / kPageSize;
memory = new WebAssembly.Memory({ initial: kPages, maximum: kPages });
} catch (e) {
print("OOM: sorry, best effort max memory size test.");
return;
}
assertEquals(kMaxMemory, memory.buffer.byteLength);
{
let a = BuildAccessors(kWasmI32, kExprI32LoadMem, kExprI32StoreMem);
probe(a, i => (0xaabbccee ^ ((i >> 11) * 0x110005)) | 0);
}
{
let a = BuildAccessors(kWasmI32, kExprI32LoadMem16U, kExprI32StoreMem16);
probe(a, i => (0xccee ^ ((i >> 11) * 0x110005)) & 0xFFFF);
}
{
let a = BuildAccessors(kWasmI32, kExprI32LoadMem8U, kExprI32StoreMem8);
probe(a, i => (0xee ^ ((i >> 11) * 0x05)) & 0xFF);
}
{
let a = BuildAccessors(kWasmF64, kExprF64LoadMem, kExprF64StoreMem);
probe(a, i => 0xaabbccee ^ ((i >> 11) * 0x110005));
}
{
let a = BuildAccessors(kWasmF32, kExprF32LoadMem, kExprF32StoreMem);
probe(a, i => Math.fround(0xaabbccee ^ ((i >> 11) * 0x110005)));
}
})();