The default value of this macro returns 1 if @var{class} has exactly one
register and zero otherwise. On most machines, this default should be
-used. Only define this macro to some other expression if pseudo
+used. Only define this macro to some other expression if pseudos
allocated by @file{local-alloc.c} end up in memory because their hard
registers were needed for spill registers. If this macro returns nonzero
for those classes, those pseudos will only be allocated by