Mips and risc-v do not have the flag register and can not decide
whether to jump through flags in JumpIf();

Therefor, we merge the comparison with the jump;

Bug: v8:11803

Change-Id: If53752da93b97e8ff65affdfe99e5de8e1a1493f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2921034
Auto-Submit: Liu yu <liuyu@loongson.cn>
Commit-Queue: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75001}