diff options
author | Richard Henderson <rth@redhat.com> | 2011-11-07 23:11:55 +0000 |
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committer | Richard Henderson <rth@redhat.com> | 2011-11-07 23:11:55 +0000 |
commit | 87747f78874a34a3d66721f582bf1f6434bcc68a (patch) | |
tree | 52678eae26470ab300ea093fc393e910585625cb /gcc/genopinit.c | |
parent | b39a28151de44fd442c417852a95bf10117664c1 (diff) |
Allow libcalls to be installed for legacy __sync optabs.
This allows a target which implements the __sync interfaces
in libgcc to continue to use them transparently with the
new __atomic builtins.
It is assumed that these libgcc routines DO NOT use spinlocks.
This is true of all extant libgcc instances.
* optabs.h (OTI_sync_compare_and_swap, OTI_sync_lock_test_and_set,
OTI_sync_old_add, OTI_sync_old_sub, OTI_sync_old_ior,
OTI_sync_old_and, OTI_sync_old_xor, OTI_sync_old_nand,
OTI_sync_new_add, OTI_sync_new_sub, OTI_sync_new_ior,
OTI_sync_new_and, OTI_sync_new_xor, OTI_sync_new_nand): Move and
rename from the direct_optab_index enum.
(sync_compare_and_swap_optab, sync_lock_test_and_set_optab,
sync_old_add_optab, sync_old_sub_optab, sync_old_ior_optab,
sync_old_and_optab, sync_old_xor_optab, sync_old_nand_optab,
sync_new_add_optab, sync_new_sub_optab, sync_new_ior_optab,
sync_new_and_optab, sync_new_xor_optab, sync_new_nand_optab): Read
from the optab_table, not the direct_optab_table.
(init_sync_libfuncs): Declare.
(can_compare_and_swap_p): Update parameters.
* optabs.c (init_sync_libfuncs_1, init_sync_libfuncs): New.
(can_compare_and_swap_p): Add allow_libcall parameter; if true,
test for the legacy compare-and-swap libcall.
(expand_atomic_exchange): Use the legacy test-and-set libcall.
(expand_atomic_compare_and_swap): Use the legacy CAS libcall.
(struct atomic_op_functions): Update for optab type changes.
(maybe_emit_op): Likewise.
(expand_atomic_fetch_op): Use the legacy fetch-op libcalls.
* builtins.c (fold_builtin_atomic_always_lock_free): Update call
to can_compare_and_swap_p.
* omp-low.c (expand_omp_atomic_fetch_op): Likewise.
(expand_omp_atomic_pipeline): Likewise.
* genopinit.c (optabs): Make sync_old_*_optab, sync_new_*_optab,
sync_compare_and_swap_optab, sync_lock_test_and_set_optab regular
optabs.
git-svn-id: https://gcc.gnu.org/svn/gcc/trunk@181134 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/genopinit.c')
-rw-r--r-- | gcc/genopinit.c | 28 |
1 files changed, 14 insertions, 14 deletions
diff --git a/gcc/genopinit.c b/gcc/genopinit.c index 44eba24f11a..63c58a8237a 100644 --- a/gcc/genopinit.c +++ b/gcc/genopinit.c @@ -228,20 +228,20 @@ static const char * const optabs[] = "set_direct_optab_handler (sync_and_optab, $A, CODE_FOR_$(sync_and$I$a$))", "set_direct_optab_handler (sync_xor_optab, $A, CODE_FOR_$(sync_xor$I$a$))", "set_direct_optab_handler (sync_nand_optab, $A, CODE_FOR_$(sync_nand$I$a$))", - "set_direct_optab_handler (sync_old_add_optab, $A, CODE_FOR_$(sync_old_add$I$a$))", - "set_direct_optab_handler (sync_old_sub_optab, $A, CODE_FOR_$(sync_old_sub$I$a$))", - "set_direct_optab_handler (sync_old_ior_optab, $A, CODE_FOR_$(sync_old_ior$I$a$))", - "set_direct_optab_handler (sync_old_and_optab, $A, CODE_FOR_$(sync_old_and$I$a$))", - "set_direct_optab_handler (sync_old_xor_optab, $A, CODE_FOR_$(sync_old_xor$I$a$))", - "set_direct_optab_handler (sync_old_nand_optab, $A, CODE_FOR_$(sync_old_nand$I$a$))", - "set_direct_optab_handler (sync_new_add_optab, $A, CODE_FOR_$(sync_new_add$I$a$))", - "set_direct_optab_handler (sync_new_sub_optab, $A, CODE_FOR_$(sync_new_sub$I$a$))", - "set_direct_optab_handler (sync_new_ior_optab, $A, CODE_FOR_$(sync_new_ior$I$a$))", - "set_direct_optab_handler (sync_new_and_optab, $A, CODE_FOR_$(sync_new_and$I$a$))", - "set_direct_optab_handler (sync_new_xor_optab, $A, CODE_FOR_$(sync_new_xor$I$a$))", - "set_direct_optab_handler (sync_new_nand_optab, $A, CODE_FOR_$(sync_new_nand$I$a$))", - "set_direct_optab_handler (sync_compare_and_swap_optab, $A, CODE_FOR_$(sync_compare_and_swap$I$a$))", - "set_direct_optab_handler (sync_lock_test_and_set_optab, $A, CODE_FOR_$(sync_lock_test_and_set$I$a$))", + "set_optab_handler (sync_old_add_optab, $A, CODE_FOR_$(sync_old_add$I$a$))", + "set_optab_handler (sync_old_sub_optab, $A, CODE_FOR_$(sync_old_sub$I$a$))", + "set_optab_handler (sync_old_ior_optab, $A, CODE_FOR_$(sync_old_ior$I$a$))", + "set_optab_handler (sync_old_and_optab, $A, CODE_FOR_$(sync_old_and$I$a$))", + "set_optab_handler (sync_old_xor_optab, $A, CODE_FOR_$(sync_old_xor$I$a$))", + "set_optab_handler (sync_old_nand_optab, $A, CODE_FOR_$(sync_old_nand$I$a$))", + "set_optab_handler (sync_new_add_optab, $A, CODE_FOR_$(sync_new_add$I$a$))", + "set_optab_handler (sync_new_sub_optab, $A, CODE_FOR_$(sync_new_sub$I$a$))", + "set_optab_handler (sync_new_ior_optab, $A, CODE_FOR_$(sync_new_ior$I$a$))", + "set_optab_handler (sync_new_and_optab, $A, CODE_FOR_$(sync_new_and$I$a$))", + "set_optab_handler (sync_new_xor_optab, $A, CODE_FOR_$(sync_new_xor$I$a$))", + "set_optab_handler (sync_new_nand_optab, $A, CODE_FOR_$(sync_new_nand$I$a$))", + "set_optab_handler (sync_compare_and_swap_optab, $A, CODE_FOR_$(sync_compare_and_swap$I$a$))", + "set_optab_handler (sync_lock_test_and_set_optab, $A, CODE_FOR_$(sync_lock_test_and_set$I$a$))", "set_direct_optab_handler (sync_lock_release_optab, $A, CODE_FOR_$(sync_lock_release$I$a$))", "set_direct_optab_handler (atomic_exchange_optab, $A, CODE_FOR_$(atomic_exchange$I$a$))", "set_direct_optab_handler (atomic_compare_and_swap_optab, $A, CODE_FOR_$(atomic_compare_and_swap$I$a$))", |