[Bug target/50457] SH2A atomic functions

[olegendo at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50457

--- Comment #7 from Oleg Endo <olegendo at gcc dot gnu.org> 2012-10-01 08:34:11 UTC ---
Author: olegendo
Date: Mon Oct  1 08:34:02 2012
New Revision: 191899

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=191899
Log:
    PR target/50457
    * config/sh/sh.opt (matomic-model): New option.
    (msoft-atomic): Mark as deprecated and alias to matomic-model=soft-gusa.
    (mhard-atomic): Delete.
    * config/sh/predicates.md (gbr_displacement): New predicate.
    * config/sh/sh-protos.h (sh_atomic_model): New struct.
    (selected_atomic_model): New declaration.
    (TARGET_ATOMIC_ANY, TARGET_ATOMIC_STRICT, TARGET_ATOMIC_SOFT_GUSA,
    TARGET_ATOMIC_HARD_LLCS, TARGET_ATOMIC_SOFT_TCB,
    TARGET_ATOMIC_SOFT_TCB_GBR_OFFSET_RTX, TARGET_ATOMIC_SOFT_IMASK):
    New macros.
    * config/sh/linux.h (SUBTARGET_OVERRIDE_OPTIONS): Adapt setting to
    default atomic model.
    * config/sh/sh.c (selected_atomic_model_): New global variable.
    (selected_atomic_model, parse_validate_atomic_model_option): New
    functions.
    (sh_option_override): Replace atomic selection checks with call to
    parse_validate_atomic_model_option.
    * config/sh/sh.h (TARGET_ANY_ATOMIC, UNSUPPORTED_ATOMIC_OPTIONS,
    UNSUPPORTED_HARD_ATOMIC_CPU): Delete.
    (DRIVER_SELF_SPECS): Remove atomic checks.
    config/sh/sync.md: Update documentation comments.
    (atomic_compare_and_swap<mode>, atomic_exchange<mode>,
    atomic_fetch_<fetchop_name><mode>, atomic_fetch_nand<mode>,
    atomic_<fetchop_name>_fetch<mode>, atomic_nand_fetch<mode>): Use
    TARGET_ATOMIC_ANY as condition.  Add TARGET_ATOMIC_STRICT check for
    SH4A case.  Handle new TARGET_ATOMIC_SOFT_TCB and
    TARGET_ATOMIC_SOFT_IMASK cases.
    (atomic_test_and_set): Handle new TARGET_ATOMIC_SOFT_TCB and
    TARGET_ATOMIC_SOFT_IMASK cases.
    (atomic_compare_and_swapsi_hard, atomic_exchangesi_hard,
    atomic_fetch_<fetchop_name>si_hard, atomic_fetch_nandsi_hard,
    atomic_<fetchop_name>_fetchsi_hard, atomic_nand_fetchsi_hard):
    Add TARGET_ATOMIC_STRICT check.
    (atomic_compare_and_swap<mode>_hard, atomic_exchange<mode>_hard,
    atomic_fetch_<fetchop_name><mode>_hard, atomic_fetch_nand<mode>_hard,
    atomic_<fetchop_name>_fetch<mode>_hard, atomic_nand_fetch<mode>_hard,
    atomic_test_and_set_hard): Use TARGET_ATOMIC_HARD_LLCS condition.
    (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): Append _gusa to the insn names and use
    TARGET_ATOMIC_SOFT_GUSA as condition.
    (atomic_compare_and_swap<mode>_soft_tcb, atomic_exchange<mode>_soft_tcb,
    atomic_fetch_<fetchop_name><mode>_soft_tcb,
    atomic_fetch_nand<mode>_soft_tcb,
    atomic_<fetchop_name>_fetch<mode>_soft_tcb,
    atomic_nand_fetch<mode>_soft_tcb, atomic_test_and_set_soft_tcb):
    New insns.
    (atomic_compare_and_swap<mode>_soft_imask,
    atomic_exchange<mode>_soft_imask,
    atomic_fetch_<fetchop_name><mode>_soft_imask,
    atomic_fetch_nand<mode>_soft_imask,
    atomic_<fetchop_name>_fetch<mode>_soft_imask,
    atomic_nand_fetch<mode>_soft_imask, atomic_test_and_set_soft_imask):
    New insns.
    * doc/invoke.texi (SH Options): Document new matomic-model option.
    Remove msoft-atomic and mhard-atomic options.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/sh/linux.h
    trunk/gcc/config/sh/predicates.md
    trunk/gcc/config/sh/sh-protos.h
    trunk/gcc/config/sh/sh.c
    trunk/gcc/config/sh/sh.h
    trunk/gcc/config/sh/sh.opt
    trunk/gcc/config/sh/sync.md
    trunk/gcc/doc/invoke.texi