Ah, your gcc example does have the branchful branch that could be done branchlessly; I was thinking about my original example with a load, which can't be transf

Ah, your gcc example does have the branchful branch that could be done branchlessly; I was thinking about my original example with a load, which can't be transformed back. On fusion, https://dougallj.github.io/applecpu/firestorm.html https://dougallj.github.io/applecpu/firestorm.html mentions ones that Apple's M1 does - arith+branch, and very specialized stuff.