| // RUN: %clang_cc1 -triple aarch64-linux-gnu %s -emit-llvm -o /dev/null -verify |
| |
| typedef struct { |
| int a, b; |
| } IntPair; |
| |
| typedef struct { |
| long long a; |
| } LongStruct; |
| |
| typedef int __attribute__((aligned(1))) unaligned_int; |
| |
| void func(IntPair *p) { |
| IntPair res; |
| __atomic_load(p, &res, 0); // expected-warning {{misaligned atomic operation may incur significant performance penalty; the expected alignment (8 bytes) exceeds the actual alignment (4 bytes)}} |
| __atomic_store(p, &res, 0); // expected-warning {{misaligned atomic operation may incur significant performance penalty; the expected alignment (8 bytes) exceeds the actual alignment (4 bytes)}} |
| __atomic_fetch_add((unaligned_int *)p, 1, 2); // expected-warning {{misaligned atomic operation may incur significant performance penalty; the expected alignment (4 bytes) exceeds the actual alignment (1 bytes)}} |
| __atomic_fetch_sub((unaligned_int *)p, 1, 3); // expected-warning {{misaligned atomic operation may incur significant performance penalty; the expected alignment (4 bytes) exceeds the actual alignment (1 bytes)}} |
| } |
| |
| void func1(LongStruct *p) { |
| LongStruct res; |
| __atomic_load(p, &res, 0); |
| __atomic_store(p, &res, 0); |
| __atomic_fetch_add((int *)p, 1, 2); |
| __atomic_fetch_sub((int *)p, 1, 3); |
| } |
| |
| typedef struct { |
| void *a; |
| void *b; |
| } Foo; |
| |
| typedef struct { |
| void *a; |
| void *b; |
| void *c; |
| void *d; |
| } __attribute__((aligned(32))) ThirtyTwo; |
| |
| void braz(Foo *foo, ThirtyTwo *braz) { |
| Foo bar; |
| __atomic_load(foo, &bar, __ATOMIC_RELAXED); // expected-warning {{misaligned atomic operation may incur significant performance penalty; the expected alignment (16 bytes) exceeds the actual alignment (8 bytes)}} |
| |
| ThirtyTwo thirtyTwo1; |
| ThirtyTwo thirtyTwo2; |
| __atomic_load(&thirtyTwo1, &thirtyTwo2, __ATOMIC_RELAXED); // expected-warning {{large atomic operation may incur significant performance penalty; the access size (32 bytes) exceeds the max lock-free size (16 bytes)}} |
| } |