xtensa-config.h (XCHAL_HAVE_THREADPTR): New.
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
2a48b790b2