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Thanks for everyone giving their feedback! I saw pretty unanimous support for making -mcpu=generic the default and making -mcpu=generic schedule for an in-order CPU (Cortex-A8 in this case). I'll be making those changes shortly. I think the comments also make clear that it's less obvious whether we'd want -mcpu=native to become a default. It's probably good for some use cases, but

Motivation At the moment, when targeting armv7a, clang defaults to generate code as if -mcpu=cortex-a8 was specified. When targeting armv8a, it defaults to generate code as if -mcpu=cortex-a53 was specified. This leads to surprising code generation, by the compiler optimizing for a specific micro-architecture, whereas the intent from the user was probably to generate code that is