add optimize #475

Job	Run time
aarch64	4m 18s
cmake	27m 39s
arenastring-gcc-stdlibc++-default	9m 44s
basic-gcc-dbg-c++20-stdlibc++-asan	3m 17s
arenastring-gcc-stdlibc++-half	9m 43s
basic-gcc-dbg-c++20-stdlibc++-tsan	3m 49s
arenastring-gcc-stdlibc++-full	10m 1s
compatible-gcc-9	2m 18s
basic-gcc-dbg-c++14-stdlibc++-asan	2m 31s
coverage	3m 31s
arenastring-clang-stdlibc++-default	8m 30s
basic-gcc-opt-c++20-stdlibc++-asan	3m 59s
arenastring-clang-libc++-default	8m 49s
cpp14-coroutine	2m 29s
basic-gcc-opt-c++20-stdlibc++-tsan	3m 38s
workspace	1m 45s
basic-gcc-opt-c++14-stdlibc++-asan	3m 19s
basic-clang-dbg-c++20-stdlibc++-asan	1m 5s
basic-clang-dbg-c++20-stdlibc++-tsan	1m 17s
basic-clang-dbg-c++20-libc++-asan	1m 19s
basic-clang-dbg-c++20-libc++-tsan	1m 13s
basic-clang-dbg-c++14-stdlibc++-asan	54s
basic-clang-dbg-c++14-libc++-asan	52s
basic-clang-opt-c++20-stdlibc++-asan	1m 2s
basic-clang-opt-c++20-stdlibc++-tsan	1m 10s
basic-clang-opt-c++20-libc++-asan	1m 10s
basic-clang-opt-c++20-libc++-tsan	1m 8s
basic-clang-opt-c++14-stdlibc++-asan	56s
basic-clang-opt-c++14-libc++-asan	1m 13s
	2h 2m 39s

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