| /* { dg-do compile } */ |
| /* { dg-options "-O2" } */ |
| |
| #include <stdatomic.h> |
| #include <stdbool.h> |
| |
| typedef int __attribute__ ((mode (__word__))) int_type; |
| |
| #define BIT (1 << 0) |
| |
| bool |
| foo0 (_Atomic int_type *v) |
| { |
| return atomic_fetch_or_explicit (v, BIT, memory_order_relaxed) & ~1; |
| } |
| |
| bool |
| foo1 (_Atomic int_type *v) |
| { |
| return atomic_fetch_or_explicit (v, BIT, memory_order_relaxed) & ~2; |
| } |
| |
| bool |
| foo2 (_Atomic int_type *v) |
| { |
| return atomic_fetch_or_explicit (v, BIT, memory_order_relaxed) & ~3; |
| } |
| |
| /* { dg-final { scan-assembler-times "lock;?\[ \t\]*cmpxchg" 3 } } */ |
| /* { dg-final { scan-assembler-not "bts" } } */ |
