Function cretonne_codegen::ir::get_probestack_funcref

pub fn get_probestack_funcref(
    func: &mut Function, 
    reg_type: Type, 
    arg_reg: RegUnit, 
    isa: &TargetIsa
) -> FuncRef

Get a function reference for the probestack function in func.

If there is an existing reference, use it, otherwise make a new one.