Now you can use 3-letter alias for all modes: rel, opt, dbg
Example: gm.py x64.opt.d8

No-Try: True
Change-Id: I825ebbf4cc1c509599f4fd2ac5aa0ac6fab998c0
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3723506Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81382}