compiler.cfg.utilities compiler.cfg compiler.cfg.rpo
compiler.cfg.instructions compiler.cfg.def-use ;
FROM: compiler.cfg.instructions.syntax => insn-def-slot insn-use-slots insn-temp-slots scalar-rep ;
+FROM: namespaces => set ;
IN: compiler.cfg.representations.preferred
GENERIC: defs-vreg-rep ( insn -- rep/f )