regress-7353.js 898 Bytes
Newer Older
1 2 3 4 5 6 7 8 9 10 11
// 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: --wasm-lazy-compilation

load('test/mjsunit/wasm/wasm-module-builder.js');

const builder = new WasmModuleBuilder();
builder.addMemory(16, 32);
builder.addFunction('grow', kSig_i_i).addBody([
12
  kExprLocalGet, 0,
13
  kExprMemoryGrow, 0,
14 15 16
]).exportFunc();
builder.addFunction('main', kSig_i_i).addBody([
  ...wasmI32Const(0x41),
17
  kExprLocalSet, 0,
18 19 20 21
  // Enter loop, such that values are spilled to the stack.
  kExprLoop, kWasmStmt,
  kExprEnd,
  // Reload value. This must be loaded as 32 bit value.
22
  kExprLocalGet, 0,
23 24 25 26 27 28
  kExprI32LoadMem, 0, 0,
]).exportFunc();
const instance = builder.instantiate();
// Execute grow, such that the stack contains garbage data afterwards.
instance.exports.grow(1);
instance.exports.main();