| /* { dg-do compile } */ |
| /* { dg-options "-O2" } */ |
| |
| #include <stdatomic.h> |
| #include <stdbool.h> |
| |
| #define MASK 0x1234 |
| |
| bool |
| foo1 (_Atomic long *v) |
| { |
| return atomic_fetch_and_explicit (v, ~MASK, memory_order_relaxed) & MASK; |
| } |
| |
| bool |
| foo2 (_Atomic long *v, long mask) |
| { |
| return atomic_fetch_and_explicit (v, ~mask, memory_order_relaxed) & mask; |
| } |
| |
| bool |
| foo3 (_Atomic long *v, long mask) |
| { |
| return !(atomic_fetch_and_explicit (v, ~mask, memory_order_relaxed) & mask); |
| } |
| |
| /* { dg-final { scan-assembler-times "lock;?\[ \t\]*cmpxchg" 3 } } */ |
| /* { dg-final { scan-assembler-not "btr" } } */ |
