https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77378
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |jakub at gcc dot gnu.org
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I think the preprocessor macro in this case would be
__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4
for SImode and
__GCC_HAVE_SYNC_COMPARE_AND_SWAP_8
for DImode, and the compiler side should use a matching:
#ifndef HAVE_sync_compare_and_swapsi
#define HAVE_sync_compare_and_swapsi 0
#endif
#ifndef HAVE_atomic_compare_and_swapsi
#define HAVE_atomic_compare_and_swapsi 0
#endif
if (HAVE_sync_compare_and_swapsi || HAVE_atomic_compare_and_swapsi)
(or s/si/di/g) as in c-cppbuiltin.c.
