Xcode now supports Processor Trace profiling on M4/A18
developer.apple.comHow can I use these without the abomination that is Xcode?
Is this basically like Valgrind, but using CPU counters?
Think like callgrind, but without the overhead.
The true x86 equivalent is probably `vtune`
For open source there's `perf` + `flamegraph` but that's not interactive, or `KDAB/hotspot` which is probably the closest open-source thing to Apple Instruments.