"Avoiding needing to spill registers to the stack" is a focus of much optimisation work in lots of places - and, yeah, it's absolutely work but the performance

"Avoiding needing to spill registers to the stack" is a focus of much optimisation work in lots of places - and, yeah, it's absolutely work but the performance gains can still be worth it. Plus I'd argue that SPARC is enough simpler to work with than x86 in other ways that you could look at it as "spending your complexity budget somewhere else" more than it being more headache inducing. (though admittedly I cut my teeth on assembly on an ARM2 so basically every modern architecture is kinda headache inducingly complicated to me ;)