| /* { dg-do compile } */ |
| /* { dg-options "-O2" } */ |
| |
| #include <stdatomic.h> |
| #include <stdbool.h> |
| |
| bool |
| foo0 (_Atomic int *v) |
| { |
| #define BIT (1 << 0) |
| return atomic_fetch_and_explicit (v, ~BIT, memory_order_relaxed) & BIT; |
| #undef BIT |
| } |
| |
| bool |
| foo30 (_Atomic int *v) |
| { |
| #define BIT (1 << 30) |
| return atomic_fetch_and_explicit (v, ~BIT, memory_order_relaxed) & BIT; |
| #undef BIT |
| } |
| |
| bool |
| foo31 (_Atomic int *v) |
| { |
| #define BIT (1 << 31) |
| return atomic_fetch_and_explicit (v, ~BIT, memory_order_relaxed) & BIT; |
| #undef BIT |
| } |
| |
| /* { dg-final { scan-assembler-times "lock;?\[ \t\]*btrl" 3 } } */ |
| /* { dg-final { scan-assembler-not "cmpxchg" } } */ |
