PR target/52941
* config/sh/predicates.md (atomic_arith_operand,
atomic_logical_operand): New predicates.
* config/sh/sh.c (sh_option_override): Check atomic options.
* config/sh/sh.h (TARGET_ANY_ATOMIC, UNSUPPORTED_ATOMIC_OPTIONS,
UNSUPPORTED_HARD_ATOMIC_CPU): New macros.
(DRIVER_SELF_SPECS): Use UNSUPPORTED_ATOMIC_OPTIONS and
UNSUPPORTED_HARD_ATOMIC_CPU.
* config/sh/sync.md: Update description comments.
(I12): New mode iterator.
(fetchop_predicate, fetchop_constraint): New code attributes.
(atomic_compare_and_swapsi_hard, atomic_compare_and_swap<mode>_hard,
atomic_exchangesi_hard, atomic_exchange<mode>_hard,
atomic_fetch_<fetchop_name>si_hard,
atomic_fetch_<fetchop_name><mode>_hard,
atomic_fetch_nandsi_hard, atomic_fetch_nand<mode>_hard,
atomic_<fetchop_name>_fetchsi_hard,
atomic_<fetchop_name>_fetch<mode>_hard,
atomic_nand_fetchsi_hard, atomic_nand_fetch<mode>_hard,
atomic_test_and_set_hard): New insns.
(atomic_compare_and_swap<mode>_soft, atomic_exchange<mode>_soft,
atomic_fetch_<fetchop_name><mode>_soft, atomic_fetch_nand<mode>_soft,
atomic_<fetchop_name>_fetch<mode>_soft, atomic_nand_fetch<mode>_soft,
atomic_test_and_set_soft): Use same formatting for the first line of
the asm block as in new insns above.
(atomic_compare_and_swap<mode>, atomic_exchange<mode>,
atomic_fetch_<fetchop_name><mode>, atomic_<fetchop_name>_fetch<mode>,
atomic_test_and_set): Integrate new *_hard insns into expanders.
* config/sh/sh.opt (mhard-atomic): New option.
* doc/invoke.texi (SH Options): Document it.
From-SVN: r187987
