gcc/ 2015-12-10 Claudiu Zissulescu <claziss@synopsys.com> * config/arc/arc-protos.h (arc_expand_atomic_op): Prototype. (arc_split_compare_and_swap): Likewise. (arc_expand_compare_and_swap): Likewise. * config/arc/arc.c (arc_init): Check usage atomic option. (arc_pre_atomic_barrier): New function. (arc_post_atomic_barrier): Likewise. (emit_unlikely_jump): Likewise. (arc_expand_compare_and_swap_qh): Likewise. (arc_expand_compare_and_swap): Likewise. (arc_split_compare_and_swap): Likewise. (arc_expand_atomic_op): Likewise. * config/arc/arc.h (TARGET_CPU_CPP_BUILTINS): New C macro. (ASM_SPEC): Enable mlock option when matomic is used. * config/arc/arc.md (UNSPEC_ARC_MEMBAR): Define. (VUNSPEC_ARC_CAS): Likewise. (VUNSPEC_ARC_LL): Likewise. (VUNSPEC_ARC_SC): Likewise. (VUNSPEC_ARC_EX): Likewise. * config/arc/arc.opt (matomic): New option. * config/arc/constraints.md (ATO): New constraint. * config/arc/predicates.md (mem_noofs_operand): New predicate. * doc/invoke.texi: Document -matomic. * config/arc/atomic.md: New file. gcc/testsuite 2015-12-10 Claudiu Zissulescu <claziss@synopsys.com> * lib/target-supports.exp (check_effective_target_arc_atomic): New function. (check_effective_target_sync_int_long): Add checks for ARC atomic feature. (check_effective_target_sync_char_short): Likewise. From-SVN: r231509
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