bug2042728.js - mozsearch

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

// Regression test: Ion MIR emitters for suspend/resume omitted

// mirGen().ensureBallast() in per-parameter loops, causing a LifoAlloc

// assertion failure in debug builds when a tag carried many parameters.

const N = 500;

const tagParams = new Array(N).fill("i64").join(" ");

const pushes = "(i64.const 0) ".repeat(N);

const blockResults = new Array(N).fill("i64").join(" ") + " (ref $ct)";

const drops = "drop ".repeat(N + 1);

wasmEvalText(`(module

  (type $ft (func))

  (type $ct (cont $ft))

  (tag $tag (param ${tagParams}))

  (func $f (type $ft) ${pushes} suspend $tag)

  (elem declare func $f)

  (func (export "run")

    (block (result ${blockResults})

      ref.func $f

      cont.new $ct

      resume $ct (on $tag 0)

      unreachable)

    ${drops}))`);