tree 42f262d8610f80c9e78c73f7a8d8cb1acc170e35
parent 5ba7cf603cc215bb13218ac8c813c9437b2ae6ce
author schmitt <schmitt@google.com> 1555957243 -0700
committer Copybara-Service <copybara-worker@google.com> 1555957337 -0700

Reset platform on cpu transitions.

With platform mappings about to be enabled we need to make sure that platforms are reset in any configuration transitions that write flags which may impact the platform. Otherwise a platform may be set before the transition that matches the old flags but platform mapping would not be triggered for the new flag values (because platform mapping only happens if no platform is set).

Step 6/N towards the platforms mapping functionality for https://github.com/bazelbuild/bazel/issues/6426

RELNOTES: None.
PiperOrigin-RevId: 244696779