bug1992316.js - mozsearch

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// |jit-test| skip-if: !isAsmJSCompilationAvailable()

// Generate a function with many parameters and local variables.

// We want to test the limits and this module should fail validation.

function build_asm_code(num_params, num_locals_decl_extra) {

  let params = [];

  let param_annots = [];

  for (let i = 0; i < num_params; ++i) {

    params.push(`p${i}`);

    param_annots.push(`  p${i} = p${i} | 0;`);

  let local_inits = [];

  local_inits.push(`x = 0`);

  for (let i = 0; i < num_locals_decl_extra; ++i) {

    let name = `l${i}`;

    local_inits.push(`${name} = 0`);

  if (local_inits.length > 0) {

    local_decl = `  var ${local_inits.join()};`;

  const body = `

    x = p0 | 0;

    switch (x | 0) {

      case 0:

        return 1;

      case 1:

        return 2;

      default:

        return 3;

    return 0;

`;

  const code = `

function Module(stdlib, foreign, buffer) {

  "use asm";

  // No stdlib imports needed

  // Function 'f' with specified parameters and locals

  function f(${params.join()}) {

    ${param_annots.join("")}

    ${local_decl}

    ${body}

  // Export function 'f'

  return { f: f };

`;

  return code;

const num_params = 10;

const num_locals_decl_extra = 49997;

const code = build_asm_code(num_params, num_locals_decl_extra);

const module = eval(`(${code})`);