JSTests/wasm/stress/simd-exception.js

//@ requireOptions("--useWasmSIMD=1")
//@ skip if !$isSIMDPlatform
import { instantiate } from "../wabt-wrapper.js"
import * as assert from "../assert.js"

const tag = new WebAssembly.Tag({ parameters: ["i32"] });

let wat = `
(module
    (import "m" "tag" (tag $e-i32 (param i32)))

    (func $test_throw (export "test_throw") (param $sz i32)
        (local $i i32)
        (local.set $i (i32.const 0))

        (loop $loop
            local.get $i
            i32.const 1
            i32.add
            local.set $i

            local.get $i
            local.get $sz
            (if (i32.eq) (then (throw $e-i32 (local.get $i))))

            local.get $i
            i32.const 1000
            i32.lt_s
            br_if $loop)
    )

    (func $test_catch (export "test_catch") (result i32)
        (v128.const i32x4 1337 1337 1337 1337)
        (try
            (do 
                (call $test_throw (i32.const 500)))
        (catch $e-i32
            (i32.const 500)
            (if (i32.ne) (then (unreachable)))
        ))

        (i32x4.extract_lane 3))
)
`

async function test() {
    const instance = await instantiate(wat, { m: { tag } }, { simd: true, exceptions: true })
    const { test_throw, test_catch } = instance.exports

    for (let i = 0; i < wasmTestLoopCount; ++i) {
        try {
            test_throw(42)
            assert.truthy(false)
        } catch (e) {
            assert.truthy(e.is(tag))
            assert.eq(e.getArg(tag, 0), 42)
        }
        assert.eq(test_catch(), 1337)
    }
}

await assert.asyncTest(test())