diff options
Diffstat (limited to 'gcc/optabs.c')
| -rw-r--r-- | gcc/optabs.c | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/gcc/optabs.c b/gcc/optabs.c index b7f1e2c..b657070 100644 --- a/gcc/optabs.c +++ b/gcc/optabs.c @@ -6344,12 +6344,20 @@ expand_atomic_load (rtx target, rtx mem, enum memmodel model) if (icode != CODE_FOR_nothing) { struct expand_operand ops[3]; + rtx_insn *last = get_last_insn (); + if (is_mm_seq_cst (model)) + expand_asm_memory_barrier (); create_output_operand (&ops[0], target, mode); create_fixed_operand (&ops[1], mem); create_integer_operand (&ops[2], model); if (maybe_expand_insn (icode, 3, ops)) - return ops[0].value; + { + if (!is_mm_relaxed (model)) + expand_asm_memory_barrier (); + return ops[0].value; + } + delete_insns_since (last); } /* If the size of the object is greater than word size on this target, @@ -6394,11 +6402,19 @@ expand_atomic_store (rtx mem, rtx val, enum memmodel model, bool use_release) icode = direct_optab_handler (atomic_store_optab, mode); if (icode != CODE_FOR_nothing) { + rtx_insn *last = get_last_insn (); + if (!is_mm_relaxed (model)) + expand_asm_memory_barrier (); create_fixed_operand (&ops[0], mem); create_input_operand (&ops[1], val, mode); create_integer_operand (&ops[2], model); if (maybe_expand_insn (icode, 3, ops)) - return const0_rtx; + { + if (is_mm_seq_cst (model)) + expand_asm_memory_barrier (); + return const0_rtx; + } + delete_insns_since (last); } /* If using __sync_lock_release is a viable alternative, try it. |