wasm-to-js-2.js - mozsearch

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

// Ensure readGeckoProfilingStack finds at least 1 Wasm frame on the stack.

function calledFromWasm() {

    let frames = readGeckoProfilingStack().flat();

    assertEq(frames.filter(f => f.kind === "wasm").length >= 1, true);

enableGeckoProfiling();

const text = `(module

    (import "m" "f" (func $f))

    (func (export "test")

    (call $f)

))`;

const bytes = wasmTextToBinary(text);

const mod = new WebAssembly.Module(bytes);

const imports = {"m": {"f": calledFromWasm}};

const instance = new WebAssembly.Instance(mod, imports);

for (let i = 0; i < 150; i++) {

    instance.exports.test();