Port commit a0ace8a8

On mips64 and loong64, sign-extend the 32-bit value.

Change-Id: I058e3fcba94c25ad36ab1d751dea6bfc0558471a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3189854Reviewed-by: Liu yu <liuyu@loongson.cn>
Commit-Queue: Liu yu <liuyu@loongson.cn>
Commit-Queue: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn>
Cr-Commit-Position: refs/heads/main@{#77110}