text: // Copyright 2020 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: --experimental-wasm-simd
  
  load('test/mjsunit/wasm/wasm-module-builder.js');
  
  // Tests function calls containing s128 parameters. It also checks that
  // lowering of simd calls are correct, so we create 2 functions with s128
  // arguments: function 2 has a single s128 parameter, function 3 has a i32 then
  // s128, to ensure that the arguments in different indices are correctly lowered.
  (function TestSimd128Params() {
    const builder = new WasmModuleBuilder();
    builder.addImportedMemory('m', 'imported_mem', 1, 2);
  
    builder
      .addFunction("main", makeSig([], []))
      .addBodyWithEnd([
        kExprI32Const, 0,
        kSimdPrefix, kExprS128LoadMem, 0, 0,
        kExprCallFunction, 0x01,
        kExprEnd,
      ]);
  
    // Writes s128 argument to memory starting byte 16.
    builder
      .addFunction("function2", makeSig([kWasmS128], []))
      .addBodyWithEnd([
        kExprI32Const, 16,
        kExprLocalGet, 0,
        kSimdPrefix, kExprS128StoreMem, 0, 0,
        kExprI32Const, 9, // This constant doesn't matter.
        kExprLocalGet, 0,
        kExprCallFunction, 0x02,
        kExprEnd,
      ]);
  
    // Writes s128 argument to memory starting byte 32.
    builder
      .addFunction("function3", makeSig([kWasmI32, kWasmS128], []))
      .addBodyWithEnd([
        kExprI32Const, 32,
        kExprLocalGet, 1,
        kSimdPrefix, kExprS128StoreMem, 0, 0,
        kExprEnd,
      ]);
  
    builder.addExport('main', 0);
    var memory = new WebAssembly.Memory({initial:1, maximum:2});
    const instance = builder.instantiate({m: {imported_mem: memory}});
  
    const arr = new Uint8Array(memory.buffer);
    // Fill the initial memory with some values, this is read by main and passed
    // as arguments to function2, and then to function3.
    for (let i = 0; i < 16; i++) {
      arr[i] = i * 2;
    }
  
    instance.exports.main();
  
    for (let i = 0; i < 16; i++) {
      assertEquals(arr[i], arr[i+16]);
      assertEquals(arr[i], arr[i+32]);
    }
  })();
  