Port 46648402

Original Commit Message:

    CallDebugOnFunctionCall was always using Registers and not Immediates.
    Then ParameterCount is not really needed. Since updating that, we
    could update other functions, e.g InvokeFunction, to only use
    registers too.

    Also removed now irrelevant variables, e.g definitely_mismatches.

R=solanes@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=
LOG=N

Change-Id: Ie0348998503bf4f416440f056e4296d22d064d4d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1892171Reviewed-by: Joran Siu <joransiu@ca.ibm.com>
Commit-Queue: Milad Farazmand <miladfar@ca.ibm.com>
Cr-Commit-Position: refs/heads/master@{#64665}