emcc -s EMTERPRETIFY=1 -s EMTERPRETIFY_ASYNC=1 # 〜v1.39.16, EMTERPRETIFY* is supported by the LLVM wasm backend
emcc -s ASYNCIFY=1 # v1.39.17〜
leftside, rightside, uniside
emcc -s EMTERPRETIFY=1 -s EMTERPRETIFY_ASYNC=1 # 〜v1.39.16, EMTERPRETIFY* is supported by the LLVM wasm backend
emcc -s ASYNCIFY=1 # v1.39.17〜