xori rd, rs, 0x1 mean is that negating bit 0 of rs.
  So we can delte xori and invert the condition of the branch.

Change-Id: I318b7a2def6ec5d848757f85623564922abfcdc5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2847673
Commit-Queue: Yahan Lu <yahan@iscas.ac.cn>
Reviewed-by: Brice Dobry <brice.dobry@futurewei.com>
Cr-Commit-Position: refs/heads/master@{#74197}