Jenn Magder bda11b675c Run mac unopt arm builds with arm toolchain (flutter/engine#41353)
Add `--force-mac-arm64` to arm gn commands running on Mac ARM bots to compile natively and not with Rosetta.  Sometimes we've seen random slow-downs in CI when lots of Rosetta processes run at the same time.

This will disable goma for these builds but it doesn't seem to be much slower:

`build ios_debug_sim_arm64` step on prod:
https://ci.chromium.org/ui/p/flutter/builders/prod/Linux%20Production%20Engine%20Drone/123894/overview - 1.1 minute
vs this PR:
https://ci.chromium.org/ui/p/flutter/builders/try/Linux%20Engine%20Drone/747210/overview - 1.8 minute
2023-04-21 00:00:53 +00:00
Languages
Dart 75%
C++ 16.5%
Objective-C++ 2.9%
Java 2.8%
Objective-C 0.7%
Other 1.9%