2a48b790b2
include/ * xtensa-config.h (XCHAL_HAVE_THREADPTR): New. (XCHAL_HAVE_RELEASE_SYNC, XCHAL_HAVE_S32C1I): New. gcc/ * config/xtensa/xtensa.c (xtensa_expand_mask_and_shift): New. (struct alignment_context, init_alignment_context): New. (xtensa_expand_compare_and_swap, xtensa_expand_atomic): New. * config/xtensa/xtensa.h (XCHAL_HAVE_RELEASE_SYNC): Add default. (XCHAL_HAVE_S32C1I): Likewise. (TARGET_RELEASE_SYNC, TARGET_S32C1I): New. * config/xtensa/xtensa.md (UNSPECV_MEMW): New constant. (UNSPECV_S32RI, UNSPECV_S32C1I): Likewise. (ATOMIC, HQI): New macros. (memory_barrier, *memory_barrier): New. (sync_lock_releasesi): New. (sync_compare_and_swapsi, sync_compare_and_swap<mode>): New. (sync_lock_test_and_set<mode>): New. (sync_<atomic><mode>): New. (sync_old_<atomic><mode>, sync_new_<atomic><mode>): New. * config/xtensa/xtensa-protos.h (xtensa_expand_compare_and_swap): New. (xtensa_expand_atomic): New. gcc/testsuite/ * lib/target-supports.exp (check_effective_target_sync_int_long): Enable for xtensa. (check_effective_target_sync_char_short): Likewise. From-SVN: r126728