v8/test/mjsunit/wasm/empirical_max_memory.js
Sven Sauleau 5bdb13297f [wasm] merge js constants file in module-builder
We noticed that almost every call site were loading both files,
the split isn't necessary anymore.

In some message tests, removed the absolute line number to allow future
changes.

Bug: v8:8726
Change-Id: I8527f0a1ecfa685aa01a5e2f5f47ddf1cb13a545
Reviewed-on: https://chromium-review.googlesource.com/c/1446452
Commit-Queue: Sven Sauleau <ssauleau@igalia.com>
Reviewed-by: Ben Titzer <titzer@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59220}
2019-01-30 22:10:34 +00:00

85 lines
2.4 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
load('test/mjsunit/wasm/wasm-module-builder.js');
let k1MiB = 1 * 1024 * 1024;
let k1GiB = 1 * 1024 * 1024 * 1024;
let k4GiB = 4 * k1GiB;
let kMaxMemory = 2 * k1GiB - kPageSize; // TODO(titzer): raise this to 4GiB
(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([ // --
kExprGetLocal, 0, // --
load_opcode, 0, 0, // --
]) // --
.exportFunc();
builder.addFunction("store", makeSig([kWasmI32, type], []))
.addBody([ // --
kExprGetLocal, 0, // --
kExprGetLocal, 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;
let max = kMaxMemory;
for (let i = 0; i < max; i += stride) {
a.store(i, f(i));
}
for (let i = 0; i < max; i += stride) {
// print(`${i} = ${f(i)}`);
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)));
}
})();