| Tim Northover | 9dc1d0c | 2018-04-23 08:16:24 +0000 | [diff] [blame^] | 1 | // RUN: %clang_cc1 -triple aarch64-linux-gnu %s -emit-llvm -o /dev/null -verify |
| 2 | |
| 3 | typedef struct { |
| 4 | int a, b; |
| 5 | } IntPair; |
| 6 | |
| 7 | typedef struct { |
| 8 | long long a; |
| 9 | } LongStruct; |
| 10 | |
| 11 | typedef int __attribute__((aligned(1))) unaligned_int; |
| 12 | |
| 13 | void func(IntPair *p) { |
| 14 | IntPair res; |
| 15 | __atomic_load(p, &res, 0); // expected-warning {{misaligned or large atomic operation may incur significant performance penalty}} |
| 16 | __atomic_store(p, &res, 0); // expected-warning {{misaligned or large atomic operation may incur significant performance penalty}} |
| 17 | __atomic_fetch_add((unaligned_int *)p, 1, 2); // expected-warning {{misaligned or large atomic operation may incur significant performance penalty}} |
| 18 | __atomic_fetch_sub((unaligned_int *)p, 1, 3); // expected-warning {{misaligned or large atomic operation may incur significant performance penalty}} |
| 19 | } |
| 20 | |
| 21 | void func1(LongStruct *p) { |
| 22 | LongStruct res; |
| 23 | __atomic_load(p, &res, 0); |
| 24 | __atomic_store(p, &res, 0); |
| 25 | __atomic_fetch_add((int *)p, 1, 2); |
| 26 | __atomic_fetch_sub((int *)p, 1, 3); |
| 27 | } |