llvm-project

5d511b67 - [lldb][test] Unify test infrastructure for checking CPU features (#153914)

[lldb][test] Unify test infrastructure for checking CPU features (#153914) This addresses limitations in our testing infrastructure for checking CPU features. Before this * `getCPUInfo()` was Linux-only, and the * `@skipUnlessFeature` decorator was Darwin-only and did not consider the remote (on device) testing use case. Introduce `CPUFeature` class as an abstraction to hide the platform-specific implementations to check for CPU features. Unify local (on host) and remote (on device) test execution by always going through `test.run_platform_command()` which uses LLDB's `platform shell <cmd>` command. Potential future cleanups: I think `@skipUnlessFeature` decorator could be used in place of code like this: ``` if not self.isAArch64SME(): self.skipTest("SME must be present.") if not self.isAArch64SME2(): self.skipTest("SME2 must be present.") ```