independent. */
DF_REF_READ_WRITE = 1,
- /* This flag is set on register references inside a subreg on
- machines which have CANNOT_CHANGE_MODE_CLASS.
- Note, that this flag can also be set on df_refs representing
- the REG itself (i.e., one might not see the subreg anymore).
- Also note, that this flag is set also for hardreg refs, i.e.,
- you must check yourself if it's a pseudo. */
- DF_REF_MODE_CHANGE = 2,
-
/* This flag is set, if we stripped the subreg from the reference.
In this case we must make conservative guesses, at what the
outer mode was. */
- DF_REF_STRIPPED = 4,
-
- /* This flag is set during register allocation if it's okay for
- the reference's INSN to have one of its operands replaced with a
- memory reference. */
- DF_REF_MEM_OK = 8
+ DF_REF_STRIPPED = 2
};