MemOperand is declared as:
````
MemOperand(Register rx, Register rb, Disp offset = 0);
```

Change-Id: I56b89dec8f206081f08c674fc160b6bc2347877b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3001173Reviewed-by: Junliang Yan <junyan@redhat.com>
Commit-Queue: Milad Fa <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/master@{#75530}