// RUN: %clang_cc1 %s -emit-llvm -o - -triple=x86_64-apple-macosx10.9.0 | FileCheck %s
// REQUIRES: x86-registered-target
// Also test serialization of atomic operations here, to avoid duplicating the
// test.
// RUN: %clang_cc1 %s -emit-pch -o %t -triple=x86_64-apple-macosx10.9.0
// RUN: %clang_cc1 %s -include-pch %t -triple=x86_64-apple-macosx10.9.0 -emit-llvm -o - | FileCheck %s
#ifndef ALREADY_INCLUDED
#define ALREADY_INCLUDED
// Basic IRGen tests for __c11_atomic_* and GNU __atomic_*
typedef enum memory_order {
memory_order_relaxed, memory_order_consume, memory_order_acquire,
memory_order_release, memory_order_acq_rel, memory_order_seq_cst
} memory_order;
int fi1(_Atomic(int) *i) {
// CHECK: @fi1
// CHECK: load atomic i32, ptr {{.*}} seq_cst, align 4
return __c11_atomic_load(i, memory_order_seq_cst);
}
int fi1a(int *i) {
// CHECK: @fi1a
// CHECK: load atomic i32, ptr {{.*}} seq_cst, align 4
int v;
__atomic_load(i, &v, memory_order_seq_cst);
return v;
}
int fi1b(int *i) {
// CHECK: @fi1b
// CHECK: load atomic i32, ptr {{.*}} seq_cst, align 4
return __atomic_load_n(i, memory_order_seq_cst);
}
void fi2(_Atomic(int) *i) {
// CHECK: @fi2
// CHECK: store atomic i32 {{.*}} seq_cst, align 4
__c11_atomic_store(i, 1, memory_order_seq_cst);
}
void fi2a(int *i) {
// CHECK: @fi2a
// CHECK: store atomic i32 {{.*}} seq_cst, align 4
int v = 1;
__atomic_store(i, &v, memory_order_seq_cst);
}
void fi2b(int *i) {
// CHECK: @fi2b
// CHECK: store atomic i32 {{.*}} seq_cst, align 4
__atomic_store_n(i, 1, memory_order_seq_cst);
}
int fi3(_Atomic(int) *i) {
// CHECK: @fi3
// CHECK: atomicrmw and {{.*}} seq_cst, align 4
// CHECK-NOT: and
return __c11_atomic_fetch_and(i, 1, memory_order_seq_cst);
}
int fi3a(int *i) {
// CHECK: @fi3a
// CHECK: atomicrmw xor {{.*}} seq_cst, align 4
// CHECK-NOT: xor
return __atomic_fetch_xor(i, 1, memory_order_seq_cst);
}
int fi3b(int *i) {
// CHECK: @fi3b
// CHECK: atomicrmw add {{.*}} seq_cst, align 4
// CHECK: add
return __atomic_add_fetch(i, 1, memory_order_seq_cst);
}
int fi3c(int *i) {
// CHECK: @fi3c
// CHECK: atomicrmw nand {{.*}} seq_cst, align 4
// CHECK-NOT: and
return __atomic_fetch_nand(i, 1, memory_order_seq_cst);
}
int fi3d(int *i) {
// CHECK: @fi3d
// CHECK: atomicrmw nand {{.*}} seq_cst, align 4
// CHECK: and
// CHECK: xor
return __atomic_nand_fetch(i, 1, memory_order_seq_cst);
}
_Bool fi4(_Atomic(int) *i) {
// CHECK: @fi4
// CHECK: cmpxchg ptr {{.*}} acquire acquire, align 4
int cmp = 0;
return __c11_atomic_compare_exchange_strong(i, &cmp, 1, memory_order_acquire, memory_order_acquire);
}
_Bool fi4a(int *i) {
// CHECK: @fi4
// CHECK: cmpxchg ptr {{.*}} acquire acquire, align 4
int cmp = 0;
int desired = 1;
return __atomic_compare_exchange(i, &cmp, &desired, 0, memory_order_acquire, memory_order_acquire);
}
_Bool fi4b(int *i) {
// CHECK: @fi4
// CHECK: cmpxchg weak ptr {{.*}} acquire acquire, align 4
int cmp = 0;
return __atomic_compare_exchange_n(i, &cmp, 1, 1, memory_order_acquire, memory_order_acquire);
}
float ff1(_Atomic(float) *d) {
// CHECK: @ff1
// CHECK: load atomic i32, ptr {{.*}} monotonic, align 4
return __c11_atomic_load(d, memory_order_relaxed);
}
void ff2(_Atomic(float) *d) {
// CHECK: @ff2
// CHECK: store atomic i32 {{.*}} release, align 4
__c11_atomic_store(d, 1, memory_order_release);
}
float ff3(_Atomic(float) *d) {
return __c11_atomic_exchange(d, 2, memory_order_seq_cst);
}
int* fp1(_Atomic(int*) *p) {
// CHECK: @fp1
// CHECK: load atomic i64, ptr {{.*}} seq_cst, align 8
return __c11_atomic_load(p, memory_order_seq_cst);
}
int* fp2(_Atomic(int*) *p) {
// CHECK: @fp2
// CHECK: store i64 4
// CHECK: atomicrmw add {{.*}} monotonic, align 8
return __c11_atomic_fetch_add(p, 1, memory_order_relaxed);
}
int *fp2a(int **p) {
// CHECK: @fp2a
// CHECK: store i64 4
// CHECK: atomicrmw sub {{.*}} monotonic, align 8
// Note, the GNU builtins do not multiply by sizeof(T)!
return __atomic_fetch_sub(p, 4, memory_order_relaxed);
}
_Complex float fc(_Atomic(_Complex float) *c) {
// CHECK: @fc
// CHECK: atomicrmw xchg ptr {{.*}} seq_cst, align 8
return __c11_atomic_exchange(c, 2, memory_order_seq_cst);
}
typedef struct X { int x; } X;
X fs(_Atomic(X) *c) {
// CHECK: @fs
// CHECK: atomicrmw xchg ptr {{.*}} seq_cst, align 4
return __c11_atomic_exchange(c, (X){2}, memory_order_seq_cst);
}
X fsa(X *c, X *d) {
// CHECK: @fsa
// CHECK: atomicrmw xchg ptr {{.*}} seq_cst, align 4
X ret;
__atomic_exchange(c, d, &ret, memory_order_seq_cst);
return ret;
}
_Bool fsb(_Bool *c) {
// CHECK: @fsb
// CHECK: atomicrmw xchg ptr {{.*}} seq_cst, align 1
return __atomic_exchange_n(c, 1, memory_order_seq_cst);
}
char flag1;
volatile char flag2;
void test_and_set(void) {
// CHECK: atomicrmw xchg ptr @flag1, i8 1 seq_cst, align 1
__atomic_test_and_set(&flag1, memory_order_seq_cst);
// CHECK: atomicrmw volatile xchg ptr @flag2, i8 1 acquire, align 1
__atomic_test_and_set(&flag2, memory_order_acquire);
// CHECK: store atomic volatile i8 0, ptr @flag2 release, align 1
__atomic_clear(&flag2, memory_order_release);
// CHECK: store atomic i8 0, ptr @flag1 seq_cst, align 1
__atomic_clear(&flag1, memory_order_seq_cst);
}
struct Sixteen {
char c[16];
} sixteen;
struct Seventeen {
char c[17];
} seventeen;
int lock_free(struct Incomplete *incomplete) {
// CHECK: @lock_free
// CHECK: call zeroext i1 @__atomic_is_lock_free(i64 noundef 3, ptr noundef null)
__c11_atomic_is_lock_free(3);
// CHECK: call zeroext i1 @__atomic_is_lock_free(i64 noundef 16, ptr noundef {{.*}}@sixteen{{.*}})
__atomic_is_lock_free(16, &sixteen);
// CHECK: call zeroext i1 @__atomic_is_lock_free(i64 noundef 17, ptr noundef {{.*}}@seventeen{{.*}})
__atomic_is_lock_free(17, &seventeen);
// CHECK: call zeroext i1 @__atomic_is_lock_free(i64 noundef 4, {{.*}})
__atomic_is_lock_free(4, incomplete);
char cs[20];
// CHECK: call zeroext i1 @__atomic_is_lock_free(i64 noundef 4, {{.*}})
__atomic_is_lock_free(4, cs+1);
// CHECK-NOT: call
__atomic_always_lock_free(3, 0);
__atomic_always_lock_free(16, 0);
__atomic_always_lock_free(17, 0);
__atomic_always_lock_free(16, &sixteen);
__atomic_always_lock_free(17, &seventeen);
int n;
__atomic_is_lock_free(4, &n);
// CHECK: ret i32 1
return __c11_atomic_is_lock_free(sizeof(_Atomic(int)));
}
// Tests for atomic operations on big values. These should call the functions
// defined here:
// http://gcc.gnu.org/wiki/Atomic/GCCMM/LIbrary#The_Library_interface
struct foo {
int big[128];
};
struct bar {
char c[3];
};
struct bar smallThing, thing1, thing2;
struct foo bigThing;
_Atomic(struct foo) bigAtomic;
void structAtomicStore(void) {
// CHECK: @structAtomicStore
struct foo f = {0};
__c11_atomic_store(&bigAtomic, f, 5);
// CHECK: call void @__atomic_store(i64 noundef 512, ptr noundef @bigAtomic,
struct bar b = {0};
__atomic_store(&smallThing, &b, 5);
// CHECK: call void @__atomic_store(i64 noundef 3, ptr noundef @smallThing
__atomic_store(&bigThing, &f, 5);
// CHECK: call void @__atomic_store(i64 noundef 512, ptr noundef @bigThing
}
void structAtomicLoad(void) {
// CHECK: @structAtomicLoad
struct foo f = __c11_atomic_load(&bigAtomic, 5);
// CHECK: call void @__atomic_load(i64 noundef 512, ptr noundef @bigAtomic,
struct bar b;
__atomic_load(&smallThing, &b, 5);
// CHECK: call void @__atomic_load(i64 noundef 3, ptr noundef @smallThing
__atomic_load(&bigThing, &f, 5);
// CHECK: call void @__atomic_load(i64 noundef 512, ptr noundef @bigThing
}
struct foo structAtomicExchange(void) {
// CHECK: @structAtomicExchange
struct foo f = {0};
struct foo old;
__atomic_exchange(&f, &bigThing, &old, 5);
// CHECK: call void @__atomic_exchange(i64 noundef 512, {{.*}}, ptr noundef @bigThing,
return __c11_atomic_exchange(&bigAtomic, f, 5);
// CHECK: call void @__atomic_exchange(i64 noundef 512, ptr noundef @bigAtomic,
}
int structAtomicCmpExchange(void) {
// CHECK: @structAtomicCmpExchange
_Bool x = __atomic_compare_exchange(&smallThing, &thing1, &thing2, 1, 5, 5);
// CHECK: call zeroext i1 @__atomic_compare_exchange(i64 noundef 3, {{.*}} @smallThing{{.*}} @thing1{{.*}} @thing2
struct foo f = {0};
struct foo g = {0};
g.big[12] = 12;
return x & __c11_atomic_compare_exchange_strong(&bigAtomic, &f, g, 5, 5);
// CHECK: call zeroext i1 @__atomic_compare_exchange(i64 noundef 512, ptr noundef @bigAtomic,
}
// Check that no atomic operations are used in any initialisation of _Atomic
// types.
_Atomic(int) atomic_init_i = 42;
// CHECK: @atomic_init_foo
void atomic_init_foo(void)
{
// CHECK-NOT: }
// CHECK-NOT: atomic
// CHECK: store
_Atomic(int) j = 12;
// CHECK-NOT: }
// CHECK-NOT: atomic
// CHECK: store
__c11_atomic_init(&j, 42);
// CHECK-NOT: atomic
// CHECK: }
}
// Check this doesn't crash
// CHECK: @test_atomic_array_param(
void test_atomic_array_param(_Atomic(struct foo) a) {
test_atomic_array_param(a);
}
#endif
Codebase Browser
llvm