This is a fabulous tool for exploring micro-optimizations across a range of CPUs. I've used it for investigating how some inner loops get pipelined across AVR,

This is a fabulous tool for exploring micro-optimizations across a range of CPUs. I've used it for investigating how some inner loops get pipelined across AVR, ARM+Thumb, ARM32, ARM64, PowerPC, x86-32, and x86-64 processors.