diff options
Diffstat (limited to 'gcc/testsuite/gcc.target/aarch64/atomic_cmp_exchange_zero_reg_1.c')
| -rw-r--r-- | gcc/testsuite/gcc.target/aarch64/atomic_cmp_exchange_zero_reg_1.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.target/aarch64/atomic_cmp_exchange_zero_reg_1.c b/gcc/testsuite/gcc.target/aarch64/atomic_cmp_exchange_zero_reg_1.c new file mode 100644 index 00000000000..15606b68990 --- /dev/null +++ b/gcc/testsuite/gcc.target/aarch64/atomic_cmp_exchange_zero_reg_1.c @@ -0,0 +1,12 @@ +/* { dg-do compile } */ +/* { dg-options "-O2" } */ + +int +foo (int *a) +{ + int x = 3; + return __atomic_compare_exchange_n (a, &x, 0, 1, __ATOMIC_ACQUIRE, __ATOMIC_ACQUIRE); +} + +/* { dg-final { scan-assembler "stxr\\tw\[0-9\]+, wzr,.*" } } */ +/* { dg-final { scan-assembler-not "mov\\tw\[0-9\]+, 0" } } */ |