Besides, skip write barrier for storing Smis.

Port: a3776a63
Port: 1c507667
Change-Id: I4626c1811e3e23e06adccd65fabc8bc41b6628f0
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2717301
Auto-Submit: Liu yu <liuyu@loongson.cn>
Reviewed-by: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn>
Commit-Queue: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn>
Cr-Commit-Position: refs/heads/master@{#72990}