407 lines
14 KiB
Diff
407 lines
14 KiB
Diff
2017-03-08 Jakub Jelinek <jakub@redhat.com>
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PR sanitizer/79944
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* asan.c (get_mem_refs_of_builtin_call): For BUILT_IN_ATOMIC* and
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BUILT_IN_SYNC*, determine the access type from the size suffix and
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always build a MEM_REF with that type. Handle forgotten
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BUILT_IN_SYNC_FETCH_AND_NAND_16 and BUILT_IN_SYNC_NAND_AND_FETCH_16.
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* c-c++-common/asan/pr79944.c: New test.
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--- gcc/asan.c.jj 2017-03-06 12:32:28.000000000 +0100
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+++ gcc/asan.c 2017-03-08 12:24:11.151353229 +0100
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@@ -603,218 +603,208 @@ get_mem_refs_of_builtin_call (const gcal
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case BUILT_IN_STRLEN:
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source0 = gimple_call_arg (call, 0);
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len = gimple_call_lhs (call);
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- break ;
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+ break;
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/* And now the __atomic* and __sync builtins.
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These are handled differently from the classical memory memory
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access builtins above. */
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case BUILT_IN_ATOMIC_LOAD_1:
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- case BUILT_IN_ATOMIC_LOAD_2:
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- case BUILT_IN_ATOMIC_LOAD_4:
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- case BUILT_IN_ATOMIC_LOAD_8:
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- case BUILT_IN_ATOMIC_LOAD_16:
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is_store = false;
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- /* fall through. */
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-
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+ /* FALLTHRU */
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case BUILT_IN_SYNC_FETCH_AND_ADD_1:
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- case BUILT_IN_SYNC_FETCH_AND_ADD_2:
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- case BUILT_IN_SYNC_FETCH_AND_ADD_4:
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- case BUILT_IN_SYNC_FETCH_AND_ADD_8:
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- case BUILT_IN_SYNC_FETCH_AND_ADD_16:
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-
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case BUILT_IN_SYNC_FETCH_AND_SUB_1:
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- case BUILT_IN_SYNC_FETCH_AND_SUB_2:
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- case BUILT_IN_SYNC_FETCH_AND_SUB_4:
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- case BUILT_IN_SYNC_FETCH_AND_SUB_8:
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- case BUILT_IN_SYNC_FETCH_AND_SUB_16:
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-
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case BUILT_IN_SYNC_FETCH_AND_OR_1:
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- case BUILT_IN_SYNC_FETCH_AND_OR_2:
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- case BUILT_IN_SYNC_FETCH_AND_OR_4:
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- case BUILT_IN_SYNC_FETCH_AND_OR_8:
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- case BUILT_IN_SYNC_FETCH_AND_OR_16:
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-
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case BUILT_IN_SYNC_FETCH_AND_AND_1:
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- case BUILT_IN_SYNC_FETCH_AND_AND_2:
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- case BUILT_IN_SYNC_FETCH_AND_AND_4:
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- case BUILT_IN_SYNC_FETCH_AND_AND_8:
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- case BUILT_IN_SYNC_FETCH_AND_AND_16:
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-
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case BUILT_IN_SYNC_FETCH_AND_XOR_1:
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- case BUILT_IN_SYNC_FETCH_AND_XOR_2:
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- case BUILT_IN_SYNC_FETCH_AND_XOR_4:
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- case BUILT_IN_SYNC_FETCH_AND_XOR_8:
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- case BUILT_IN_SYNC_FETCH_AND_XOR_16:
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-
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case BUILT_IN_SYNC_FETCH_AND_NAND_1:
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- case BUILT_IN_SYNC_FETCH_AND_NAND_2:
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- case BUILT_IN_SYNC_FETCH_AND_NAND_4:
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- case BUILT_IN_SYNC_FETCH_AND_NAND_8:
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-
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case BUILT_IN_SYNC_ADD_AND_FETCH_1:
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- case BUILT_IN_SYNC_ADD_AND_FETCH_2:
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- case BUILT_IN_SYNC_ADD_AND_FETCH_4:
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- case BUILT_IN_SYNC_ADD_AND_FETCH_8:
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- case BUILT_IN_SYNC_ADD_AND_FETCH_16:
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-
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case BUILT_IN_SYNC_SUB_AND_FETCH_1:
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- case BUILT_IN_SYNC_SUB_AND_FETCH_2:
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- case BUILT_IN_SYNC_SUB_AND_FETCH_4:
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- case BUILT_IN_SYNC_SUB_AND_FETCH_8:
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- case BUILT_IN_SYNC_SUB_AND_FETCH_16:
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-
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case BUILT_IN_SYNC_OR_AND_FETCH_1:
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- case BUILT_IN_SYNC_OR_AND_FETCH_2:
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- case BUILT_IN_SYNC_OR_AND_FETCH_4:
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- case BUILT_IN_SYNC_OR_AND_FETCH_8:
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- case BUILT_IN_SYNC_OR_AND_FETCH_16:
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-
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case BUILT_IN_SYNC_AND_AND_FETCH_1:
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- case BUILT_IN_SYNC_AND_AND_FETCH_2:
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- case BUILT_IN_SYNC_AND_AND_FETCH_4:
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- case BUILT_IN_SYNC_AND_AND_FETCH_8:
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- case BUILT_IN_SYNC_AND_AND_FETCH_16:
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-
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case BUILT_IN_SYNC_XOR_AND_FETCH_1:
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- case BUILT_IN_SYNC_XOR_AND_FETCH_2:
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- case BUILT_IN_SYNC_XOR_AND_FETCH_4:
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- case BUILT_IN_SYNC_XOR_AND_FETCH_8:
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- case BUILT_IN_SYNC_XOR_AND_FETCH_16:
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-
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case BUILT_IN_SYNC_NAND_AND_FETCH_1:
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- case BUILT_IN_SYNC_NAND_AND_FETCH_2:
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- case BUILT_IN_SYNC_NAND_AND_FETCH_4:
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- case BUILT_IN_SYNC_NAND_AND_FETCH_8:
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-
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case BUILT_IN_SYNC_BOOL_COMPARE_AND_SWAP_1:
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- case BUILT_IN_SYNC_BOOL_COMPARE_AND_SWAP_2:
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- case BUILT_IN_SYNC_BOOL_COMPARE_AND_SWAP_4:
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- case BUILT_IN_SYNC_BOOL_COMPARE_AND_SWAP_8:
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- case BUILT_IN_SYNC_BOOL_COMPARE_AND_SWAP_16:
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-
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case BUILT_IN_SYNC_VAL_COMPARE_AND_SWAP_1:
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- case BUILT_IN_SYNC_VAL_COMPARE_AND_SWAP_2:
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- case BUILT_IN_SYNC_VAL_COMPARE_AND_SWAP_4:
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- case BUILT_IN_SYNC_VAL_COMPARE_AND_SWAP_8:
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- case BUILT_IN_SYNC_VAL_COMPARE_AND_SWAP_16:
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-
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case BUILT_IN_SYNC_LOCK_TEST_AND_SET_1:
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- case BUILT_IN_SYNC_LOCK_TEST_AND_SET_2:
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- case BUILT_IN_SYNC_LOCK_TEST_AND_SET_4:
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- case BUILT_IN_SYNC_LOCK_TEST_AND_SET_8:
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- case BUILT_IN_SYNC_LOCK_TEST_AND_SET_16:
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-
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case BUILT_IN_SYNC_LOCK_RELEASE_1:
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- case BUILT_IN_SYNC_LOCK_RELEASE_2:
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- case BUILT_IN_SYNC_LOCK_RELEASE_4:
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- case BUILT_IN_SYNC_LOCK_RELEASE_8:
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- case BUILT_IN_SYNC_LOCK_RELEASE_16:
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-
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case BUILT_IN_ATOMIC_EXCHANGE_1:
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- case BUILT_IN_ATOMIC_EXCHANGE_2:
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- case BUILT_IN_ATOMIC_EXCHANGE_4:
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- case BUILT_IN_ATOMIC_EXCHANGE_8:
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- case BUILT_IN_ATOMIC_EXCHANGE_16:
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-
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case BUILT_IN_ATOMIC_COMPARE_EXCHANGE_1:
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- case BUILT_IN_ATOMIC_COMPARE_EXCHANGE_2:
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- case BUILT_IN_ATOMIC_COMPARE_EXCHANGE_4:
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- case BUILT_IN_ATOMIC_COMPARE_EXCHANGE_8:
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- case BUILT_IN_ATOMIC_COMPARE_EXCHANGE_16:
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-
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case BUILT_IN_ATOMIC_STORE_1:
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- case BUILT_IN_ATOMIC_STORE_2:
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- case BUILT_IN_ATOMIC_STORE_4:
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- case BUILT_IN_ATOMIC_STORE_8:
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- case BUILT_IN_ATOMIC_STORE_16:
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-
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case BUILT_IN_ATOMIC_ADD_FETCH_1:
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- case BUILT_IN_ATOMIC_ADD_FETCH_2:
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- case BUILT_IN_ATOMIC_ADD_FETCH_4:
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- case BUILT_IN_ATOMIC_ADD_FETCH_8:
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- case BUILT_IN_ATOMIC_ADD_FETCH_16:
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-
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case BUILT_IN_ATOMIC_SUB_FETCH_1:
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- case BUILT_IN_ATOMIC_SUB_FETCH_2:
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- case BUILT_IN_ATOMIC_SUB_FETCH_4:
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- case BUILT_IN_ATOMIC_SUB_FETCH_8:
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- case BUILT_IN_ATOMIC_SUB_FETCH_16:
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-
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case BUILT_IN_ATOMIC_AND_FETCH_1:
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- case BUILT_IN_ATOMIC_AND_FETCH_2:
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- case BUILT_IN_ATOMIC_AND_FETCH_4:
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- case BUILT_IN_ATOMIC_AND_FETCH_8:
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- case BUILT_IN_ATOMIC_AND_FETCH_16:
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-
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case BUILT_IN_ATOMIC_NAND_FETCH_1:
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- case BUILT_IN_ATOMIC_NAND_FETCH_2:
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- case BUILT_IN_ATOMIC_NAND_FETCH_4:
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- case BUILT_IN_ATOMIC_NAND_FETCH_8:
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- case BUILT_IN_ATOMIC_NAND_FETCH_16:
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-
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case BUILT_IN_ATOMIC_XOR_FETCH_1:
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- case BUILT_IN_ATOMIC_XOR_FETCH_2:
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- case BUILT_IN_ATOMIC_XOR_FETCH_4:
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- case BUILT_IN_ATOMIC_XOR_FETCH_8:
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- case BUILT_IN_ATOMIC_XOR_FETCH_16:
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-
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case BUILT_IN_ATOMIC_OR_FETCH_1:
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- case BUILT_IN_ATOMIC_OR_FETCH_2:
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- case BUILT_IN_ATOMIC_OR_FETCH_4:
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- case BUILT_IN_ATOMIC_OR_FETCH_8:
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- case BUILT_IN_ATOMIC_OR_FETCH_16:
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-
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case BUILT_IN_ATOMIC_FETCH_ADD_1:
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- case BUILT_IN_ATOMIC_FETCH_ADD_2:
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- case BUILT_IN_ATOMIC_FETCH_ADD_4:
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- case BUILT_IN_ATOMIC_FETCH_ADD_8:
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- case BUILT_IN_ATOMIC_FETCH_ADD_16:
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-
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case BUILT_IN_ATOMIC_FETCH_SUB_1:
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- case BUILT_IN_ATOMIC_FETCH_SUB_2:
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- case BUILT_IN_ATOMIC_FETCH_SUB_4:
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- case BUILT_IN_ATOMIC_FETCH_SUB_8:
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- case BUILT_IN_ATOMIC_FETCH_SUB_16:
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-
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case BUILT_IN_ATOMIC_FETCH_AND_1:
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- case BUILT_IN_ATOMIC_FETCH_AND_2:
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- case BUILT_IN_ATOMIC_FETCH_AND_4:
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- case BUILT_IN_ATOMIC_FETCH_AND_8:
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- case BUILT_IN_ATOMIC_FETCH_AND_16:
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-
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case BUILT_IN_ATOMIC_FETCH_NAND_1:
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- case BUILT_IN_ATOMIC_FETCH_NAND_2:
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- case BUILT_IN_ATOMIC_FETCH_NAND_4:
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- case BUILT_IN_ATOMIC_FETCH_NAND_8:
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- case BUILT_IN_ATOMIC_FETCH_NAND_16:
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-
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case BUILT_IN_ATOMIC_FETCH_XOR_1:
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- case BUILT_IN_ATOMIC_FETCH_XOR_2:
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- case BUILT_IN_ATOMIC_FETCH_XOR_4:
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- case BUILT_IN_ATOMIC_FETCH_XOR_8:
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- case BUILT_IN_ATOMIC_FETCH_XOR_16:
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-
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case BUILT_IN_ATOMIC_FETCH_OR_1:
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+ access_size = 1;
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+ goto do_atomic;
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+
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+ case BUILT_IN_ATOMIC_LOAD_2:
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+ is_store = false;
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+ /* FALLTHRU */
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+ case BUILT_IN_SYNC_FETCH_AND_ADD_2:
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+ case BUILT_IN_SYNC_FETCH_AND_SUB_2:
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+ case BUILT_IN_SYNC_FETCH_AND_OR_2:
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+ case BUILT_IN_SYNC_FETCH_AND_AND_2:
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+ case BUILT_IN_SYNC_FETCH_AND_XOR_2:
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+ case BUILT_IN_SYNC_FETCH_AND_NAND_2:
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+ case BUILT_IN_SYNC_ADD_AND_FETCH_2:
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+ case BUILT_IN_SYNC_SUB_AND_FETCH_2:
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+ case BUILT_IN_SYNC_OR_AND_FETCH_2:
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+ case BUILT_IN_SYNC_AND_AND_FETCH_2:
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+ case BUILT_IN_SYNC_XOR_AND_FETCH_2:
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+ case BUILT_IN_SYNC_NAND_AND_FETCH_2:
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+ case BUILT_IN_SYNC_BOOL_COMPARE_AND_SWAP_2:
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+ case BUILT_IN_SYNC_VAL_COMPARE_AND_SWAP_2:
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+ case BUILT_IN_SYNC_LOCK_TEST_AND_SET_2:
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+ case BUILT_IN_SYNC_LOCK_RELEASE_2:
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+ case BUILT_IN_ATOMIC_EXCHANGE_2:
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+ case BUILT_IN_ATOMIC_COMPARE_EXCHANGE_2:
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+ case BUILT_IN_ATOMIC_STORE_2:
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+ case BUILT_IN_ATOMIC_ADD_FETCH_2:
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+ case BUILT_IN_ATOMIC_SUB_FETCH_2:
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+ case BUILT_IN_ATOMIC_AND_FETCH_2:
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+ case BUILT_IN_ATOMIC_NAND_FETCH_2:
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+ case BUILT_IN_ATOMIC_XOR_FETCH_2:
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+ case BUILT_IN_ATOMIC_OR_FETCH_2:
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+ case BUILT_IN_ATOMIC_FETCH_ADD_2:
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+ case BUILT_IN_ATOMIC_FETCH_SUB_2:
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+ case BUILT_IN_ATOMIC_FETCH_AND_2:
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+ case BUILT_IN_ATOMIC_FETCH_NAND_2:
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+ case BUILT_IN_ATOMIC_FETCH_XOR_2:
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case BUILT_IN_ATOMIC_FETCH_OR_2:
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+ access_size = 2;
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+ goto do_atomic;
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+
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+ case BUILT_IN_ATOMIC_LOAD_4:
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+ is_store = false;
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+ /* FALLTHRU */
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+ case BUILT_IN_SYNC_FETCH_AND_ADD_4:
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+ case BUILT_IN_SYNC_FETCH_AND_SUB_4:
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+ case BUILT_IN_SYNC_FETCH_AND_OR_4:
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+ case BUILT_IN_SYNC_FETCH_AND_AND_4:
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+ case BUILT_IN_SYNC_FETCH_AND_XOR_4:
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+ case BUILT_IN_SYNC_FETCH_AND_NAND_4:
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+ case BUILT_IN_SYNC_ADD_AND_FETCH_4:
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+ case BUILT_IN_SYNC_SUB_AND_FETCH_4:
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+ case BUILT_IN_SYNC_OR_AND_FETCH_4:
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+ case BUILT_IN_SYNC_AND_AND_FETCH_4:
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+ case BUILT_IN_SYNC_XOR_AND_FETCH_4:
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+ case BUILT_IN_SYNC_NAND_AND_FETCH_4:
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+ case BUILT_IN_SYNC_BOOL_COMPARE_AND_SWAP_4:
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+ case BUILT_IN_SYNC_VAL_COMPARE_AND_SWAP_4:
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+ case BUILT_IN_SYNC_LOCK_TEST_AND_SET_4:
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+ case BUILT_IN_SYNC_LOCK_RELEASE_4:
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+ case BUILT_IN_ATOMIC_EXCHANGE_4:
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+ case BUILT_IN_ATOMIC_COMPARE_EXCHANGE_4:
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+ case BUILT_IN_ATOMIC_STORE_4:
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+ case BUILT_IN_ATOMIC_ADD_FETCH_4:
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+ case BUILT_IN_ATOMIC_SUB_FETCH_4:
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+ case BUILT_IN_ATOMIC_AND_FETCH_4:
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+ case BUILT_IN_ATOMIC_NAND_FETCH_4:
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+ case BUILT_IN_ATOMIC_XOR_FETCH_4:
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+ case BUILT_IN_ATOMIC_OR_FETCH_4:
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+ case BUILT_IN_ATOMIC_FETCH_ADD_4:
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+ case BUILT_IN_ATOMIC_FETCH_SUB_4:
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+ case BUILT_IN_ATOMIC_FETCH_AND_4:
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+ case BUILT_IN_ATOMIC_FETCH_NAND_4:
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+ case BUILT_IN_ATOMIC_FETCH_XOR_4:
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case BUILT_IN_ATOMIC_FETCH_OR_4:
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+ access_size = 4;
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+ goto do_atomic;
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+
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+ case BUILT_IN_ATOMIC_LOAD_8:
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+ is_store = false;
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+ /* FALLTHRU */
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+ case BUILT_IN_SYNC_FETCH_AND_ADD_8:
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+ case BUILT_IN_SYNC_FETCH_AND_SUB_8:
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+ case BUILT_IN_SYNC_FETCH_AND_OR_8:
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+ case BUILT_IN_SYNC_FETCH_AND_AND_8:
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+ case BUILT_IN_SYNC_FETCH_AND_XOR_8:
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+ case BUILT_IN_SYNC_FETCH_AND_NAND_8:
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+ case BUILT_IN_SYNC_ADD_AND_FETCH_8:
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+ case BUILT_IN_SYNC_SUB_AND_FETCH_8:
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+ case BUILT_IN_SYNC_OR_AND_FETCH_8:
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+ case BUILT_IN_SYNC_AND_AND_FETCH_8:
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+ case BUILT_IN_SYNC_XOR_AND_FETCH_8:
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+ case BUILT_IN_SYNC_NAND_AND_FETCH_8:
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+ case BUILT_IN_SYNC_BOOL_COMPARE_AND_SWAP_8:
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+ case BUILT_IN_SYNC_VAL_COMPARE_AND_SWAP_8:
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+ case BUILT_IN_SYNC_LOCK_TEST_AND_SET_8:
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+ case BUILT_IN_SYNC_LOCK_RELEASE_8:
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+ case BUILT_IN_ATOMIC_EXCHANGE_8:
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+ case BUILT_IN_ATOMIC_COMPARE_EXCHANGE_8:
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+ case BUILT_IN_ATOMIC_STORE_8:
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+ case BUILT_IN_ATOMIC_ADD_FETCH_8:
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+ case BUILT_IN_ATOMIC_SUB_FETCH_8:
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+ case BUILT_IN_ATOMIC_AND_FETCH_8:
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+ case BUILT_IN_ATOMIC_NAND_FETCH_8:
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+ case BUILT_IN_ATOMIC_XOR_FETCH_8:
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+ case BUILT_IN_ATOMIC_OR_FETCH_8:
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+ case BUILT_IN_ATOMIC_FETCH_ADD_8:
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+ case BUILT_IN_ATOMIC_FETCH_SUB_8:
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+ case BUILT_IN_ATOMIC_FETCH_AND_8:
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+ case BUILT_IN_ATOMIC_FETCH_NAND_8:
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+ case BUILT_IN_ATOMIC_FETCH_XOR_8:
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case BUILT_IN_ATOMIC_FETCH_OR_8:
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+ access_size = 8;
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+ goto do_atomic;
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+
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+ case BUILT_IN_ATOMIC_LOAD_16:
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+ is_store = false;
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+ /* FALLTHRU */
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+ case BUILT_IN_SYNC_FETCH_AND_ADD_16:
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+ case BUILT_IN_SYNC_FETCH_AND_SUB_16:
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+ case BUILT_IN_SYNC_FETCH_AND_OR_16:
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+ case BUILT_IN_SYNC_FETCH_AND_AND_16:
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+ case BUILT_IN_SYNC_FETCH_AND_XOR_16:
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+ case BUILT_IN_SYNC_FETCH_AND_NAND_16:
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+ case BUILT_IN_SYNC_ADD_AND_FETCH_16:
|
|
+ case BUILT_IN_SYNC_SUB_AND_FETCH_16:
|
|
+ case BUILT_IN_SYNC_OR_AND_FETCH_16:
|
|
+ case BUILT_IN_SYNC_AND_AND_FETCH_16:
|
|
+ case BUILT_IN_SYNC_XOR_AND_FETCH_16:
|
|
+ case BUILT_IN_SYNC_NAND_AND_FETCH_16:
|
|
+ case BUILT_IN_SYNC_BOOL_COMPARE_AND_SWAP_16:
|
|
+ case BUILT_IN_SYNC_VAL_COMPARE_AND_SWAP_16:
|
|
+ case BUILT_IN_SYNC_LOCK_TEST_AND_SET_16:
|
|
+ case BUILT_IN_SYNC_LOCK_RELEASE_16:
|
|
+ case BUILT_IN_ATOMIC_EXCHANGE_16:
|
|
+ case BUILT_IN_ATOMIC_COMPARE_EXCHANGE_16:
|
|
+ case BUILT_IN_ATOMIC_STORE_16:
|
|
+ case BUILT_IN_ATOMIC_ADD_FETCH_16:
|
|
+ case BUILT_IN_ATOMIC_SUB_FETCH_16:
|
|
+ case BUILT_IN_ATOMIC_AND_FETCH_16:
|
|
+ case BUILT_IN_ATOMIC_NAND_FETCH_16:
|
|
+ case BUILT_IN_ATOMIC_XOR_FETCH_16:
|
|
+ case BUILT_IN_ATOMIC_OR_FETCH_16:
|
|
+ case BUILT_IN_ATOMIC_FETCH_ADD_16:
|
|
+ case BUILT_IN_ATOMIC_FETCH_SUB_16:
|
|
+ case BUILT_IN_ATOMIC_FETCH_AND_16:
|
|
+ case BUILT_IN_ATOMIC_FETCH_NAND_16:
|
|
+ case BUILT_IN_ATOMIC_FETCH_XOR_16:
|
|
case BUILT_IN_ATOMIC_FETCH_OR_16:
|
|
+ access_size = 16;
|
|
+ /* FALLTHRU */
|
|
+ do_atomic:
|
|
{
|
|
dest = gimple_call_arg (call, 0);
|
|
/* DEST represents the address of a memory location.
|
|
instrument_derefs wants the memory location, so lets
|
|
dereference the address DEST before handing it to
|
|
instrument_derefs. */
|
|
- if (TREE_CODE (dest) == ADDR_EXPR)
|
|
- dest = TREE_OPERAND (dest, 0);
|
|
- else if (TREE_CODE (dest) == SSA_NAME || TREE_CODE (dest) == INTEGER_CST)
|
|
- dest = build2 (MEM_REF, TREE_TYPE (TREE_TYPE (dest)),
|
|
- dest, build_int_cst (TREE_TYPE (dest), 0));
|
|
- else
|
|
- gcc_unreachable ();
|
|
-
|
|
- access_size = int_size_in_bytes (TREE_TYPE (dest));
|
|
+ tree type = build_nonstandard_integer_type (access_size
|
|
+ * BITS_PER_UNIT, 1);
|
|
+ dest = build2 (MEM_REF, type, dest,
|
|
+ build_int_cst (build_pointer_type (char_type_node), 0));
|
|
+ break;
|
|
}
|
|
|
|
default:
|
|
--- gcc/testsuite/c-c++-common/asan/pr79944.c.jj 2017-03-08 12:50:40.428617273 +0100
|
|
+++ gcc/testsuite/c-c++-common/asan/pr79944.c 2017-03-08 12:34:47.000000000 +0100
|
|
@@ -0,0 +1,18 @@
|
|
+/* PR sanitizer/79944 */
|
|
+/* { dg-do run } */
|
|
+
|
|
+struct S { int i; char p[1024]; };
|
|
+
|
|
+int
|
|
+main ()
|
|
+{
|
|
+ struct S *p = (struct S *) __builtin_malloc (__builtin_offsetof (struct S, p) + 64);
|
|
+ p->i = 5;
|
|
+ asm volatile ("" : "+r" (p) : : "memory");
|
|
+ __atomic_fetch_add ((int *) p, 5, __ATOMIC_RELAXED);
|
|
+ asm volatile ("" : "+r" (p) : : "memory");
|
|
+ if (p->i != 10)
|
|
+ __builtin_abort ();
|
|
+ __builtin_free (p);
|
|
+ return 0;
|
|
+}
|