Function wasmI64Const

deps/v8/test/mjsunit/wasm/wasm-module-builder.js:2463–2465

(val)

// Note: Since {val} is a JS number, the generated constant only has 53 bits of
// precision.
function wasmI64Const(val) {
  return [kExprI64Const, ...wasmSignedLeb64(val, 10)];
}

function wasmF32Const(f) {
  // Write in little-endian order at offset 0.