I expect Apple to do something smarter, e.g. extend the ARM instruction set with operations that speed up x86 emulation. For example, emulation of x86 on ARM i

I expect Apple to do something smarter, e.g. extend the ARM instruction set with operations that speed up x86 emulation. For example, emulation of x86 on ARM is expensive due to subtle differences in memory model. Why not make an ARM chip that can operate with x86's memory model?