| // RUN: %clang_cc1 %s -emit-llvm -o - -ffreestanding -ffake-address-space-map -triple=i686-apple-darwin9 | 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 -ffreestanding -ffake-address-space-map -triple=i686-apple-darwin9 |
| // RUN: %clang_cc1 %s -include-pch %t -ffreestanding -ffake-address-space-map -triple=i686-apple-darwin9 -emit-llvm -o - | FileCheck %s |
| #ifndef ALREADY_INCLUDED |
| #define ALREADY_INCLUDED |
| |
| #include <stdatomic.h> |
| |
| // Basic IRGen tests for __c11_atomic_* and GNU __atomic_* |
| |
| int fi1(_Atomic(int) *i) { |
| // CHECK-LABEL: @fi1 |
| // CHECK: load atomic i32, ptr {{.*}} seq_cst, align 4 |
| return __c11_atomic_load(i, memory_order_seq_cst); |
| } |
| |
| int fi1a(int *i) { |
| // CHECK-LABEL: @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-LABEL: @fi1b |
| // CHECK: load atomic i32, ptr {{.*}} seq_cst, align 4 |
| return __atomic_load_n(i, memory_order_seq_cst); |
| } |
| |
| int fi1c(atomic_int *i) { |
| // CHECK-LABEL: @fi1c |
| // CHECK: load atomic i32, ptr {{.*}} seq_cst, align 4 |
| return atomic_load(i); |
| } |
| |
| void fi2(_Atomic(int) *i) { |
| // CHECK-LABEL: @fi2 |
| // CHECK: store atomic i32 {{.*}} seq_cst, align 4 |
| __c11_atomic_store(i, 1, memory_order_seq_cst); |
| } |
| |
| void fi2a(int *i) { |
| // CHECK-LABEL: @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-LABEL: @fi2b |
| // CHECK: store atomic i32 {{.*}} seq_cst, align 4 |
| __atomic_store_n(i, 1, memory_order_seq_cst); |
| } |
| |
| void fi2c(atomic_int *i) { |
| // CHECK-LABEL: @fi2c |
| // CHECK: store atomic i32 {{.*}} seq_cst, align 4 |
| atomic_store(i, 1); |
| } |
| |
| int fi3(_Atomic(int) *i) { |
| // CHECK-LABEL: @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-LABEL: @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-LABEL: @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-LABEL: @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-LABEL: @fi3d |
| // CHECK: atomicrmw nand {{.*}} seq_cst, align 4 |
| // CHECK: and |
| // CHECK: xor |
| return __atomic_nand_fetch(i, 1, memory_order_seq_cst); |
| } |
| |
| int fi3e(atomic_int *i) { |
| // CHECK-LABEL: @fi3e |
| // CHECK: atomicrmw or {{.*}} seq_cst, align 4 |
| // CHECK-NOT: {{ or }} |
| return atomic_fetch_or(i, 1); |
| } |
| |
| int fi3f(int *i) { |
| // CHECK-LABEL: @fi3f |
| // CHECK-NOT: store volatile |
| // CHECK: atomicrmw or {{.*}} seq_cst, align 4 |
| // CHECK-NOT: {{ or }} |
| return __atomic_fetch_or(i, (short)1, memory_order_seq_cst); |
| } |
| |
| _Bool fi4(_Atomic(int) *i) { |
| // CHECK-LABEL: @fi4( |
| // CHECK: [[PAIR:%[.0-9A-Z_a-z]+]] = cmpxchg ptr [[PTR:%[.0-9A-Z_a-z]+]], i32 [[EXPECTED:%[.0-9A-Z_a-z]+]], i32 [[DESIRED:%[.0-9A-Z_a-z]+]] acquire acquire, align 4 |
| // CHECK: [[OLD:%[.0-9A-Z_a-z]+]] = extractvalue { i32, i1 } [[PAIR]], 0 |
| // CHECK: [[CMP:%[.0-9A-Z_a-z]+]] = extractvalue { i32, i1 } [[PAIR]], 1 |
| // CHECK: br i1 [[CMP]], label %[[STORE_EXPECTED:[.0-9A-Z_a-z]+]], label %[[CONTINUE:[.0-9A-Z_a-z]+]] |
| // CHECK: store i32 [[OLD]] |
| int cmp = 0; |
| return __c11_atomic_compare_exchange_strong(i, &cmp, 1, memory_order_acquire, memory_order_acquire); |
| } |
| |
| _Bool fi4a(int *i) { |
| // CHECK-LABEL: @fi4a |
| // CHECK: [[PAIR:%[.0-9A-Z_a-z]+]] = cmpxchg ptr [[PTR:%[.0-9A-Z_a-z]+]], i32 [[EXPECTED:%[.0-9A-Z_a-z]+]], i32 [[DESIRED:%[.0-9A-Z_a-z]+]] acquire acquire, align 4 |
| // CHECK: [[OLD:%[.0-9A-Z_a-z]+]] = extractvalue { i32, i1 } [[PAIR]], 0 |
| // CHECK: [[CMP:%[.0-9A-Z_a-z]+]] = extractvalue { i32, i1 } [[PAIR]], 1 |
| // CHECK: br i1 [[CMP]], label %[[STORE_EXPECTED:[.0-9A-Z_a-z]+]], label %[[CONTINUE:[.0-9A-Z_a-z]+]] |
| // CHECK: store i32 [[OLD]] |
| 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-LABEL: @fi4b( |
| // CHECK: [[PAIR:%[.0-9A-Z_a-z]+]] = cmpxchg weak ptr [[PTR:%[.0-9A-Z_a-z]+]], i32 [[EXPECTED:%[.0-9A-Z_a-z]+]], i32 [[DESIRED:%[.0-9A-Z_a-z]+]] acquire acquire, align 4 |
| // CHECK: [[OLD:%[.0-9A-Z_a-z]+]] = extractvalue { i32, i1 } [[PAIR]], 0 |
| // CHECK: [[CMP:%[.0-9A-Z_a-z]+]] = extractvalue { i32, i1 } [[PAIR]], 1 |
| // CHECK: br i1 [[CMP]], label %[[STORE_EXPECTED:[.0-9A-Z_a-z]+]], label %[[CONTINUE:[.0-9A-Z_a-z]+]] |
| // CHECK: store i32 [[OLD]] |
| int cmp = 0; |
| return __atomic_compare_exchange_n(i, &cmp, 1, 1, memory_order_acquire, memory_order_acquire); |
| } |
| |
| _Bool fi4c(atomic_int *i) { |
| // CHECK-LABEL: @fi4c |
| // CHECK: cmpxchg ptr {{.*}} seq_cst seq_cst, align 4 |
| int cmp = 0; |
| return atomic_compare_exchange_strong(i, &cmp, 1); |
| } |
| |
| #define _AS1 __attribute__((address_space(1))) |
| _Bool fi4d(_Atomic(int) *i, int _AS1 *ptr2) { |
| // CHECK-LABEL: @fi4d( |
| // CHECK: [[EXPECTED:%[.0-9A-Z_a-z]+]] = load i32, ptr addrspace(1) %{{[0-9]+}} |
| // CHECK: cmpxchg ptr %{{[0-9]+}}, i32 [[EXPECTED]], i32 %{{[0-9]+}} acquire acquire, align 4 |
| return __c11_atomic_compare_exchange_strong(i, ptr2, 1, memory_order_acquire, memory_order_acquire); |
| } |
| |
| float ff1(_Atomic(float) *d) { |
| // CHECK-LABEL: @ff1 |
| // CHECK: load atomic i32, ptr {{.*}} monotonic, align 4 |
| return __c11_atomic_load(d, memory_order_relaxed); |
| } |
| |
| void ff2(_Atomic(float) *d) { |
| // CHECK-LABEL: @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); |
| } |
| |
| struct S { |
| double x; |
| }; |
| |
| void implicit_store(_Atomic(struct S) *a, struct S s) { |
| // CHECK-LABEL: @implicit_store( |
| // CHECK: store atomic i64 %{{.*}}, ptr %{{.*}} seq_cst, align 8 |
| *a = s; |
| } |
| |
| struct S implicit_load(_Atomic(struct S) *a) { |
| // CHECK-LABEL: @implicit_load( |
| // CHECK: load atomic i64, ptr %{{.*}} seq_cst, align 8 |
| return *a; |
| } |
| |
| struct S fd1(struct S *a) { |
| // CHECK-LABEL: @fd1 |
| // CHECK: [[RETVAL:%.*]] = alloca %struct.S, align 4 |
| // CHECK: [[TMP1:%.*]] = load atomic i64, ptr {{%.*}} seq_cst, align 4 |
| // CHECK-NEXT: store i64 [[TMP1]], ptr [[RETVAL]], align 4 |
| // CHECK: ret |
| struct S ret; |
| __atomic_load(a, &ret, memory_order_seq_cst); |
| return ret; |
| } |
| |
| void fd2(struct S *a, struct S *b) { |
| // CHECK-LABEL: @fd2 |
| // CHECK: [[A_ADDR:%.*]] = alloca ptr, align 4 |
| // CHECK-NEXT: [[B_ADDR:%.*]] = alloca ptr, align 4 |
| // CHECK-NEXT: store ptr %a, ptr [[A_ADDR]], align 4 |
| // CHECK-NEXT: store ptr %b, ptr [[B_ADDR]], align 4 |
| // CHECK-NEXT: [[LOAD_A_PTR:%.*]] = load ptr, ptr [[A_ADDR]], align 4 |
| // CHECK-NEXT: [[LOAD_B_PTR:%.*]] = load ptr, ptr [[B_ADDR]], align 4 |
| // CHECK-NEXT: [[LOAD_B:%.*]] = load i64, ptr [[LOAD_B_PTR]], align 4 |
| // CHECK-NEXT: store atomic i64 [[LOAD_B]], ptr [[LOAD_A_PTR]] seq_cst, align 4 |
| // CHECK-NEXT: ret void |
| __atomic_store(a, b, memory_order_seq_cst); |
| } |
| |
| void fd3(struct S *a, struct S *b, struct S *c) { |
| // CHECK-LABEL: @fd3 |
| // CHECK: [[A_ADDR:%.*]] = alloca ptr, align 4 |
| // CHECK-NEXT: [[B_ADDR:%.*]] = alloca ptr, align 4 |
| // CHECK-NEXT: [[C_ADDR:%.*]] = alloca ptr, align 4 |
| // CHECK-NEXT: store ptr %a, ptr [[A_ADDR]], align 4 |
| // CHECK-NEXT: store ptr %b, ptr [[B_ADDR]], align 4 |
| // CHECK-NEXT: store ptr %c, ptr [[C_ADDR]], align 4 |
| // CHECK-NEXT: [[LOAD_A_PTR:%.*]] = load ptr, ptr [[A_ADDR]], align 4 |
| // CHECK-NEXT: [[LOAD_B_PTR:%.*]] = load ptr, ptr [[B_ADDR]], align 4 |
| // CHECK-NEXT: [[LOAD_C_PTR:%.*]] = load ptr, ptr [[C_ADDR]], align 4 |
| // CHECK-NEXT: [[LOAD_B:%.*]] = load i64, ptr [[LOAD_B_PTR]], align 4 |
| // CHECK-NEXT: [[RESULT:%.*]] = atomicrmw xchg ptr [[LOAD_A_PTR]], i64 [[LOAD_B]] seq_cst, align 4 |
| // CHECK-NEXT: store i64 [[RESULT]], ptr [[LOAD_C_PTR]], align 4 |
| |
| __atomic_exchange(a, b, c, memory_order_seq_cst); |
| } |
| |
| _Bool fd4(struct S *a, struct S *b, struct S *c) { |
| // CHECK-LABEL: @fd4 |
| // CHECK: [[A_ADDR:%.*]] = alloca ptr, align 4 |
| // CHECK-NEXT: [[B_ADDR:%.*]] = alloca ptr, align 4 |
| // CHECK-NEXT: [[C_ADDR:%.*]] = alloca ptr, align 4 |
| // CHECK: store ptr %a, ptr [[A_ADDR]], align 4 |
| // CHECK-NEXT: store ptr %b, ptr [[B_ADDR]], align 4 |
| // CHECK-NEXT: store ptr %c, ptr [[C_ADDR]], align 4 |
| // CHECK-NEXT: [[LOAD_A_PTR:%.*]] = load ptr, ptr [[A_ADDR]], align 4 |
| // CHECK-NEXT: [[LOAD_B_PTR:%.*]] = load ptr, ptr [[B_ADDR]], align 4 |
| // CHECK-NEXT: [[LOAD_C_PTR:%.*]] = load ptr, ptr [[C_ADDR]], align 4 |
| // CHECK-NEXT: [[LOAD_B:%.*]] = load i64, ptr [[LOAD_B_PTR]], align 4 |
| // CHECK-NEXT: [[LOAD_C:%.*]] = load i64, ptr [[LOAD_C_PTR]], align 4 |
| // CHECK-NEXT: {{.*}} = cmpxchg weak ptr [[LOAD_A_PTR]], i64 [[LOAD_B]], i64 [[LOAD_C]] seq_cst seq_cst, align 4 |
| return __atomic_compare_exchange(a, b, c, 1, 5, 5); |
| } |
| |
| int* fp1(_Atomic(int*) *p) { |
| // CHECK-LABEL: @fp1 |
| // CHECK: load atomic i32, ptr {{.*}} seq_cst, align 4 |
| return __c11_atomic_load(p, memory_order_seq_cst); |
| } |
| |
| int* fp2(_Atomic(int*) *p) { |
| // CHECK-LABEL: @fp2 |
| // CHECK: store i32 4 |
| // CHECK: atomicrmw add {{.*}} monotonic, align 4 |
| return __c11_atomic_fetch_add(p, 1, memory_order_relaxed); |
| } |
| |
| int *fp2a(int **p) { |
| // CHECK-LABEL: @fp2a |
| // CHECK: store i32 4 |
| // CHECK: atomicrmw sub {{.*}} monotonic, align 4 |
| // 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-LABEL: @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-LABEL: @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-LABEL: @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-LABEL: @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; |
| |
| struct Incomplete; |
| |
| int lock_free(struct Incomplete *incomplete) { |
| // CHECK-LABEL: @lock_free |
| |
| // CHECK: call zeroext i1 @__atomic_is_lock_free(i32 noundef 3, ptr noundef null) |
| __c11_atomic_is_lock_free(3); |
| |
| // CHECK: call zeroext i1 @__atomic_is_lock_free(i32 noundef 16, ptr noundef {{.*}}@sixteen{{.*}}) |
| __atomic_is_lock_free(16, &sixteen); |
| |
| // CHECK: call zeroext i1 @__atomic_is_lock_free(i32 noundef 17, ptr noundef {{.*}}@seventeen{{.*}}) |
| __atomic_is_lock_free(17, &seventeen); |
| |
| // CHECK: call zeroext i1 @__atomic_is_lock_free(i32 noundef 4, {{.*}}) |
| __atomic_is_lock_free(4, incomplete); |
| |
| char cs[20]; |
| // CHECK: call zeroext i1 @__atomic_is_lock_free(i32 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-LABEL: @structAtomicStore |
| struct foo f = {0}; |
| struct bar b = {0}; |
| __atomic_store(&smallThing, &b, 5); |
| // CHECK: call void @__atomic_store(i32 noundef 3, ptr noundef @smallThing |
| |
| __atomic_store(&bigThing, &f, 5); |
| // CHECK: call void @__atomic_store(i32 noundef 512, ptr noundef @bigThing |
| } |
| void structAtomicLoad(void) { |
| // CHECK-LABEL: @structAtomicLoad |
| struct bar b; |
| __atomic_load(&smallThing, &b, 5); |
| // CHECK: call void @__atomic_load(i32 noundef 3, ptr noundef @smallThing |
| |
| struct foo f = {0}; |
| __atomic_load(&bigThing, &f, 5); |
| // CHECK: call void @__atomic_load(i32 noundef 512, ptr noundef @bigThing |
| } |
| struct foo structAtomicExchange(void) { |
| // CHECK-LABEL: @structAtomicExchange |
| struct foo f = {0}; |
| struct foo old; |
| __atomic_exchange(&f, &bigThing, &old, 5); |
| // CHECK: call void @__atomic_exchange(i32 noundef 512, {{.*}}, ptr noundef @bigThing, |
| |
| return __c11_atomic_exchange(&bigAtomic, f, 5); |
| // CHECK: call void @__atomic_exchange(i32 noundef 512, ptr noundef @bigAtomic, |
| } |
| int structAtomicCmpExchange(void) { |
| // CHECK-LABEL: @structAtomicCmpExchange |
| // CHECK: %[[x_mem:.*]] = alloca i8 |
| _Bool x = __atomic_compare_exchange(&smallThing, &thing1, &thing2, 1, 5, 5); |
| // CHECK: %[[call1:.*]] = call zeroext i1 @__atomic_compare_exchange(i32 noundef 3, {{.*}} @smallThing{{.*}} @thing1{{.*}} @thing2 |
| // CHECK: %[[zext1:.*]] = zext i1 %[[call1]] to i8 |
| // CHECK: store i8 %[[zext1]], ptr %[[x_mem]], align 1 |
| // CHECK: %[[x:.*]] = load i8, ptr %[[x_mem]] |
| // CHECK: %[[x_bool:.*]] = trunc i8 %[[x]] to i1 |
| // CHECK: %[[conv1:.*]] = zext i1 %[[x_bool]] to i32 |
| |
| 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: %[[call2:.*]] = call zeroext i1 @__atomic_compare_exchange(i32 noundef 512, ptr noundef @bigAtomic, |
| // CHECK: %[[conv2:.*]] = zext i1 %[[call2]] to i32 |
| // CHECK: %[[and:.*]] = and i32 %[[conv1]], %[[conv2]] |
| // CHECK: ret i32 %[[and]] |
| } |
| |
| // Check that no atomic operations are used in any initialisation of _Atomic |
| // types. |
| _Atomic(int) atomic_init_i = 42; |
| |
| // CHECK-LABEL: @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-LABEL: @failureOrder |
| void failureOrder(_Atomic(int) *ptr, int *ptr2) { |
| __c11_atomic_compare_exchange_strong(ptr, ptr2, 43, memory_order_acquire, memory_order_relaxed); |
| // CHECK: cmpxchg ptr {{%[0-9A-Za-z._]+}}, i32 {{%[0-9A-Za-z._]+}}, i32 {{%[0-9A-Za-z_.]+}} acquire monotonic, align 4 |
| |
| __c11_atomic_compare_exchange_weak(ptr, ptr2, 43, memory_order_seq_cst, memory_order_acquire); |
| // CHECK: cmpxchg weak ptr {{%[0-9A-Za-z._]+}}, i32 {{%[0-9A-Za-z._]+}}, i32 {{%[0-9A-Za-z_.]+}} seq_cst acquire, align 4 |
| |
| // Unknown ordering: conservatively pick strongest valid option (for now!). |
| __atomic_compare_exchange(ptr2, ptr2, ptr2, 0, memory_order_acq_rel, *ptr2); |
| // CHECK: cmpxchg ptr {{%[0-9A-Za-z._]+}}, i32 {{%[0-9A-Za-z._]+}}, i32 {{%[0-9A-Za-z_.]+}} acq_rel acquire, align 4 |
| |
| // Undefined behaviour: don't really care what that last ordering is so leave |
| // it out: |
| __atomic_compare_exchange_n(ptr2, ptr2, 43, 1, memory_order_seq_cst, 42); |
| // CHECK: cmpxchg weak ptr {{%[0-9A-Za-z._]+}}, i32 {{%[0-9A-Za-z._]+}}, i32 {{%[0-9A-Za-z_.]+}} seq_cst {{.*}}, align 4 |
| } |
| |
| // CHECK-LABEL: @generalFailureOrder |
| void generalFailureOrder(_Atomic(int) *ptr, int *ptr2, int success, int fail) { |
| __c11_atomic_compare_exchange_strong(ptr, ptr2, 42, success, fail); |
| // CHECK: switch i32 {{.*}}, label %[[MONOTONIC:[0-9a-zA-Z._]+]] [ |
| // CHECK-NEXT: i32 1, label %[[ACQUIRE:[0-9a-zA-Z._]+]] |
| // CHECK-NEXT: i32 2, label %[[ACQUIRE]] |
| // CHECK-NEXT: i32 3, label %[[RELEASE:[0-9a-zA-Z._]+]] |
| // CHECK-NEXT: i32 4, label %[[ACQREL:[0-9a-zA-Z._]+]] |
| // CHECK-NEXT: i32 5, label %[[SEQCST:[0-9a-zA-Z._]+]] |
| |
| // CHECK: [[MONOTONIC]] |
| // CHECK: switch {{.*}}, label %[[MONOTONIC_MONOTONIC:[0-9a-zA-Z._]+]] [ |
| // CHECK-NEXT: i32 1, label %[[MONOTONIC_ACQUIRE:[0-9a-zA-Z._]+]] |
| // CHECK-NEXT: i32 2, label %[[MONOTONIC_ACQUIRE:[0-9a-zA-Z._]+]] |
| // CHECK-NEXT: i32 5, label %[[MONOTONIC_SEQCST:[0-9a-zA-Z._]+]] |
| // CHECK-NEXT: ] |
| |
| // CHECK: [[ACQUIRE]] |
| // CHECK: switch {{.*}}, label %[[ACQUIRE_MONOTONIC:[0-9a-zA-Z._]+]] [ |
| // CHECK-NEXT: i32 1, label %[[ACQUIRE_ACQUIRE:[0-9a-zA-Z._]+]] |
| // CHECK-NEXT: i32 2, label %[[ACQUIRE_ACQUIRE:[0-9a-zA-Z._]+]] |
| // CHECK-NEXT: i32 5, label %[[ACQUIRE_SEQCST:[0-9a-zA-Z._]+]] |
| // CHECK-NEXT: ] |
| |
| // CHECK: [[RELEASE]] |
| // CHECK: switch {{.*}}, label %[[RELEASE_MONOTONIC:[0-9a-zA-Z._]+]] [ |
| // CHECK-NEXT: i32 1, label %[[RELEASE_ACQUIRE:[0-9a-zA-Z._]+]] |
| // CHECK-NEXT: i32 2, label %[[RELEASE_ACQUIRE:[0-9a-zA-Z._]+]] |
| // CHECK-NEXT: i32 5, label %[[RELEASE_SEQCST:[0-9a-zA-Z._]+]] |
| // CHECK-NEXT: ] |
| |
| // CHECK: [[ACQREL]] |
| // CHECK: switch {{.*}}, label %[[ACQREL_MONOTONIC:[0-9a-zA-Z._]+]] [ |
| // CHECK-NEXT: i32 1, label %[[ACQREL_ACQUIRE:[0-9a-zA-Z._]+]] |
| // CHECK-NEXT: i32 2, label %[[ACQREL_ACQUIRE:[0-9a-zA-Z._]+]] |
| // CHECK-NEXT: i32 5, label %[[ACQREL_SEQCST:[0-9a-zA-Z._]+]] |
| // CHECK-NEXT: ] |
| |
| // CHECK: [[SEQCST]] |
| // CHECK: switch {{.*}}, label %[[SEQCST_MONOTONIC:[0-9a-zA-Z._]+]] [ |
| // CHECK-NEXT: i32 1, label %[[SEQCST_ACQUIRE:[0-9a-zA-Z._]+]] |
| // CHECK-NEXT: i32 2, label %[[SEQCST_ACQUIRE]] |
| // CHECK-NEXT: i32 5, label %[[SEQCST_SEQCST:[0-9a-zA-Z._]+]] |
| // CHECK-NEXT: ] |
| |
| // CHECK: [[MONOTONIC_MONOTONIC]] |
| // CHECK: cmpxchg {{.*}} monotonic monotonic, align |
| // CHECK: br |
| |
| // CHECK: [[MONOTONIC_ACQUIRE]] |
| // CHECK: cmpxchg {{.*}} monotonic acquire, align |
| // CHECK: br |
| |
| // CHECK: [[MONOTONIC_SEQCST]] |
| // CHECK: cmpxchg {{.*}} monotonic seq_cst, align |
| // CHECK: br |
| |
| // CHECK: [[ACQUIRE_MONOTONIC]] |
| // CHECK: cmpxchg {{.*}} acquire monotonic, align |
| // CHECK: br |
| |
| // CHECK: [[ACQUIRE_ACQUIRE]] |
| // CHECK: cmpxchg {{.*}} acquire acquire, align |
| // CHECK: br |
| |
| // CHECK: [[ACQUIRE_SEQCST]] |
| // CHECK: cmpxchg {{.*}} acquire seq_cst, align |
| // CHECK: br |
| |
| // CHECK: [[RELEASE_MONOTONIC]] |
| // CHECK: cmpxchg {{.*}} release monotonic, align |
| // CHECK: br |
| |
| // CHECK: [[RELEASE_ACQUIRE]] |
| // CHECK: cmpxchg {{.*}} release acquire, align |
| // CHECK: br |
| |
| // CHECK: [[RELEASE_SEQCST]] |
| // CHECK: cmpxchg {{.*}} release seq_cst, align |
| // CHECK: br |
| |
| // CHECK: [[ACQREL_MONOTONIC]] |
| // CHECK: cmpxchg {{.*}} acq_rel monotonic, align |
| // CHECK: br |
| |
| // CHECK: [[ACQREL_ACQUIRE]] |
| // CHECK: cmpxchg {{.*}} acq_rel acquire, align |
| // CHECK: br |
| |
| // CHECK: [[ACQREL_SEQCST]] |
| // CHECK: cmpxchg {{.*}} acq_rel seq_cst, align |
| // CHECK: br |
| |
| // CHECK: [[SEQCST_MONOTONIC]] |
| // CHECK: cmpxchg {{.*}} seq_cst monotonic, align |
| // CHECK: br |
| |
| // CHECK: [[SEQCST_ACQUIRE]] |
| // CHECK: cmpxchg {{.*}} seq_cst acquire, align |
| // CHECK: br |
| |
| // CHECK: [[SEQCST_SEQCST]] |
| // CHECK: cmpxchg {{.*}} seq_cst seq_cst, align |
| // CHECK: br |
| } |
| |
| void generalWeakness(int *ptr, int *ptr2, _Bool weak) { |
| __atomic_compare_exchange_n(ptr, ptr2, 42, weak, memory_order_seq_cst, memory_order_seq_cst); |
| // CHECK: switch i1 {{.*}}, label %[[WEAK:[0-9a-zA-Z._]+]] [ |
| // CHECK-NEXT: i1 false, label %[[STRONG:[0-9a-zA-Z._]+]] |
| |
| // CHECK: [[STRONG]] |
| // CHECK-NOT: br |
| // CHECK: cmpxchg {{.*}} seq_cst seq_cst, align |
| // CHECK: br |
| |
| // CHECK: [[WEAK]] |
| // CHECK-NOT: br |
| // CHECK: cmpxchg weak {{.*}} seq_cst seq_cst, align |
| // CHECK: br |
| |
| __atomic_compare_exchange_n(ptr, ptr2, 42, weak, memory_order_release, memory_order_acquire); |
| // CHECK: switch i1 {{.*}}, label %[[WEAK:[0-9a-zA-Z._]+]] [ |
| // CHECK-NEXT: i1 false, label %[[STRONG:[0-9a-zA-Z._]+]] |
| |
| // CHECK: [[STRONG]] |
| // CHECK-NOT: br |
| // CHECK: cmpxchg {{.*}} release acquire |
| // CHECK: br |
| |
| // CHECK: [[WEAK]] |
| // CHECK-NOT: br |
| // CHECK: cmpxchg weak {{.*}} release acquire |
| // CHECK: br |
| } |
| |
| // Having checked the flow in the previous two cases, we'll trust clang to |
| // combine them sanely. |
| void EMIT_ALL_THE_THINGS(int *ptr, int *ptr2, int new, _Bool weak, int success, int fail) { |
| __atomic_compare_exchange(ptr, ptr2, &new, weak, success, fail); |
| |
| // CHECK: = cmpxchg {{.*}} monotonic monotonic, align |
| // CHECK: = cmpxchg {{.*}} monotonic acquire, align |
| // CHECK: = cmpxchg {{.*}} monotonic seq_cst, align |
| // CHECK: = cmpxchg weak {{.*}} monotonic monotonic, align |
| // CHECK: = cmpxchg weak {{.*}} monotonic acquire, align |
| // CHECK: = cmpxchg weak {{.*}} monotonic seq_cst, align |
| // CHECK: = cmpxchg {{.*}} acquire monotonic, align |
| // CHECK: = cmpxchg {{.*}} acquire acquire, align |
| // CHECK: = cmpxchg {{.*}} acquire seq_cst, align |
| // CHECK: = cmpxchg weak {{.*}} acquire monotonic, align |
| // CHECK: = cmpxchg weak {{.*}} acquire acquire, align |
| // CHECK: = cmpxchg weak {{.*}} acquire seq_cst, align |
| // CHECK: = cmpxchg {{.*}} release monotonic, align |
| // CHECK: = cmpxchg {{.*}} release acquire, align |
| // CHECK: = cmpxchg {{.*}} release seq_cst, align |
| // CHECK: = cmpxchg weak {{.*}} release monotonic, align |
| // CHECK: = cmpxchg weak {{.*}} release acquire, align |
| // CHECK: = cmpxchg weak {{.*}} release seq_cst, align |
| // CHECK: = cmpxchg {{.*}} acq_rel monotonic, align |
| // CHECK: = cmpxchg {{.*}} acq_rel acquire, align |
| // CHECK: = cmpxchg {{.*}} acq_rel seq_cst, align |
| // CHECK: = cmpxchg weak {{.*}} acq_rel monotonic, align |
| // CHECK: = cmpxchg weak {{.*}} acq_rel acquire, align |
| // CHECK: = cmpxchg weak {{.*}} acq_rel seq_cst, align |
| // CHECK: = cmpxchg {{.*}} seq_cst monotonic, align |
| // CHECK: = cmpxchg {{.*}} seq_cst acquire, align |
| // CHECK: = cmpxchg {{.*}} seq_cst seq_cst, align |
| // CHECK: = cmpxchg weak {{.*}} seq_cst monotonic, align |
| // CHECK: = cmpxchg weak {{.*}} seq_cst acquire, align |
| // CHECK: = cmpxchg weak {{.*}} seq_cst seq_cst, align |
| } |
| |
| int PR21643(void) { |
| return __atomic_or_fetch((int __attribute__((address_space(257))) *)0x308, 1, |
| __ATOMIC_RELAXED); |
| // CHECK: %[[atomictmp:.*]] = alloca i32, align 4 |
| // CHECK: %[[atomicdst:.*]] = alloca i32, align 4 |
| // CHECK: store i32 1, ptr %[[atomictmp]] |
| // CHECK: %[[one:.*]] = load i32, ptr %[[atomictmp]], align 4 |
| // CHECK: %[[old:.*]] = atomicrmw or ptr addrspace(257) inttoptr (i32 776 to ptr addrspace(257)), i32 %[[one]] monotonic, align 4 |
| // CHECK: %[[new:.*]] = or i32 %[[old]], %[[one]] |
| // CHECK: store i32 %[[new]], ptr %[[atomicdst]], align 4 |
| // CHECK: %[[ret:.*]] = load i32, ptr %[[atomicdst]], align 4 |
| // CHECK: ret i32 %[[ret]] |
| } |
| |
| int PR17306_1(volatile _Atomic(int) *i) { |
| // CHECK-LABEL: @PR17306_1 |
| // CHECK: %[[i_addr:.*]] = alloca ptr |
| // CHECK-NEXT: %[[atomicdst:.*]] = alloca i32 |
| // CHECK-NEXT: store ptr %i, ptr %[[i_addr]] |
| // CHECK-NEXT: %[[addr:.*]] = load ptr, ptr %[[i_addr]] |
| // CHECK-NEXT: %[[res:.*]] = load atomic volatile i32, ptr %[[addr]] seq_cst, align 4 |
| // CHECK-NEXT: store i32 %[[res]], ptr %[[atomicdst]] |
| // CHECK-NEXT: %[[retval:.*]] = load i32, ptr %[[atomicdst]] |
| // CHECK-NEXT: ret i32 %[[retval]] |
| return __c11_atomic_load(i, memory_order_seq_cst); |
| } |
| |
| int PR17306_2(volatile int *i, int value) { |
| // CHECK-LABEL: @PR17306_2 |
| // CHECK: %[[i_addr:.*]] = alloca ptr |
| // CHECK-NEXT: %[[value_addr:.*]] = alloca i32 |
| // CHECK-NEXT: %[[atomictmp:.*]] = alloca i32 |
| // CHECK-NEXT: %[[atomicdst:.*]] = alloca i32 |
| // CHECK-NEXT: store ptr %i, ptr %[[i_addr]] |
| // CHECK-NEXT: store i32 %value, ptr %[[value_addr]] |
| // CHECK-NEXT: %[[i_lval:.*]] = load ptr, ptr %[[i_addr]] |
| // CHECK-NEXT: %[[value:.*]] = load i32, ptr %[[value_addr]] |
| // CHECK-NEXT: store i32 %[[value]], ptr %[[atomictmp]] |
| // CHECK-NEXT: %[[value_lval:.*]] = load i32, ptr %[[atomictmp]] |
| // CHECK-NEXT: %[[old_val:.*]] = atomicrmw volatile add ptr %[[i_lval]], i32 %[[value_lval]] seq_cst, align 4 |
| // CHECK-NEXT: %[[new_val:.*]] = add i32 %[[old_val]], %[[value_lval]] |
| // CHECK-NEXT: store i32 %[[new_val]], ptr %[[atomicdst]] |
| // CHECK-NEXT: %[[retval:.*]] = load i32, ptr %[[atomicdst]] |
| // CHECK-NEXT: ret i32 %[[retval]] |
| return __atomic_add_fetch(i, value, memory_order_seq_cst); |
| } |
| |
| void test_underaligned(void) { |
| // CHECK-LABEL: @test_underaligned |
| struct Underaligned { char c[8]; } underaligned_a, underaligned_b, underaligned_c; |
| |
| // CHECK: load atomic i64, {{.*}}, align 1 |
| __atomic_load(&underaligned_a, &underaligned_b, memory_order_seq_cst); |
| // CHECK: store atomic i64 {{.*}}, align 1 |
| __atomic_store(&underaligned_a, &underaligned_b, memory_order_seq_cst); |
| // CHECK: atomicrmw xchg ptr {{.*}}, align 1 |
| __atomic_exchange(&underaligned_a, &underaligned_b, &underaligned_c, memory_order_seq_cst); |
| // CHECK: cmpxchg weak ptr {{.*}}, align 1 |
| __atomic_compare_exchange(&underaligned_a, &underaligned_b, &underaligned_c, 1, memory_order_seq_cst, memory_order_seq_cst); |
| |
| __attribute__((aligned)) struct Underaligned aligned_a, aligned_b, aligned_c; |
| |
| // CHECK: load atomic i64, {{.*}}, align 16 |
| __atomic_load(&aligned_a, &aligned_b, memory_order_seq_cst); |
| // CHECK: store atomic i64 {{.*}}, align 16 |
| __atomic_store(&aligned_a, &aligned_b, memory_order_seq_cst); |
| // CHECK: atomicrmw xchg ptr {{.*}}, align 16 |
| __atomic_exchange(&aligned_a, &aligned_b, &aligned_c, memory_order_seq_cst); |
| // CHECK: cmpxchg weak ptr {{.*}}, align 16 |
| __atomic_compare_exchange(&aligned_a, &aligned_b, &aligned_c, 1, memory_order_seq_cst, memory_order_seq_cst); |
| } |
| |
| void test_c11_minmax(_Atomic(int) * si, _Atomic(unsigned) * ui, _Atomic(short) * ss, _Atomic(unsigned char) * uc, _Atomic(long long) * sll) { |
| // CHECK-LABEL: @test_c11_minmax |
| |
| // CHECK: atomicrmw max ptr {{.*}} acquire, align 4 |
| *si = __c11_atomic_fetch_max(si, 42, memory_order_acquire); |
| // CHECK: atomicrmw min ptr {{.*}} acquire, align 4 |
| *si = __c11_atomic_fetch_min(si, 42, memory_order_acquire); |
| // CHECK: atomicrmw umax ptr {{.*}} acquire, align 4 |
| *ui = __c11_atomic_fetch_max(ui, 42, memory_order_acquire); |
| // CHECK: atomicrmw umin ptr {{.*}} acquire, align 4 |
| *ui = __c11_atomic_fetch_min(ui, 42, memory_order_acquire); |
| |
| // CHECK: atomicrmw max ptr {{.*}} acquire, align 2 |
| *ss = __c11_atomic_fetch_max(ss, 42, memory_order_acquire); |
| // CHECK: atomicrmw min ptr {{.*}} acquire, align 2 |
| *ss = __c11_atomic_fetch_min(ss, 42, memory_order_acquire); |
| |
| // CHECK: atomicrmw umax ptr {{.*}} acquire, align 1 |
| *uc = __c11_atomic_fetch_max(uc, 42, memory_order_acquire); |
| // CHECK: atomicrmw umin ptr {{.*}} acquire, align 1 |
| *uc = __c11_atomic_fetch_min(uc, 42, memory_order_acquire); |
| |
| // CHECK: atomicrmw max ptr {{.*}} acquire, align 8 |
| *sll = __c11_atomic_fetch_max(sll, 42, memory_order_acquire); |
| // CHECK: atomicrmw min ptr {{.*}} acquire, align 8 |
| *sll = __c11_atomic_fetch_min(sll, 42, memory_order_acquire); |
| |
| } |
| |
| void test_minmax_postop(int *si, unsigned *ui, unsigned short *us, signed char *sc, unsigned long long *ull) { |
| int val = 42; |
| // CHECK-LABEL: @test_minmax_postop |
| |
| // CHECK: [[OLD:%.*]] = atomicrmw max ptr [[PTR:%.*]], i32 [[RHS:%.*]] release, align 4 |
| // CHECK: [[TST:%.*]] = icmp sgt i32 [[OLD]], [[RHS]] |
| // CHECK: [[NEW:%.*]] = select i1 [[TST]], i32 [[OLD]], i32 [[RHS]] |
| // CHECK: store i32 [[NEW]], ptr |
| *si = __atomic_max_fetch(si, 42, memory_order_release); |
| |
| // CHECK: [[OLD:%.*]] = atomicrmw min ptr [[PTR:%.*]], i32 [[RHS:%.*]] release, align 4 |
| // CHECK: [[TST:%.*]] = icmp slt i32 [[OLD]], [[RHS]] |
| // CHECK: [[NEW:%.*]] = select i1 [[TST]], i32 [[OLD]], i32 [[RHS]] |
| // CHECK: store i32 [[NEW]], ptr |
| *si = __atomic_min_fetch(si, 42, memory_order_release); |
| |
| // CHECK: [[OLD:%.*]] = atomicrmw umax ptr [[PTR:%.*]], i32 [[RHS:%.*]] release, align 4 |
| // CHECK: [[TST:%.*]] = icmp ugt i32 [[OLD]], [[RHS]] |
| // CHECK: [[NEW:%.*]] = select i1 [[TST]], i32 [[OLD]], i32 [[RHS]] |
| // CHECK: store i32 [[NEW]], ptr |
| *ui = __atomic_max_fetch(ui, 42, memory_order_release); |
| |
| // CHECK: [[OLD:%.*]] = atomicrmw umin ptr [[PTR:%.*]], i32 [[RHS:%.*]] release, align 4 |
| // CHECK: [[TST:%.*]] = icmp ult i32 [[OLD]], [[RHS]] |
| // CHECK: [[NEW:%.*]] = select i1 [[TST]], i32 [[OLD]], i32 [[RHS]] |
| // CHECK: store i32 [[NEW]], ptr |
| *ui = __atomic_min_fetch(ui, 42, memory_order_release); |
| |
| // CHECK: [[OLD:%.*]] = atomicrmw umin ptr [[PTR:%.*]], i16 [[RHS:%.*]] release, align 2 |
| // CHECK: [[TST:%.*]] = icmp ult i16 [[OLD]], [[RHS]] |
| // CHECK: [[NEW:%.*]] = select i1 [[TST]], i16 [[OLD]], i16 [[RHS]] |
| // CHECK: store i16 [[NEW]], ptr |
| *us = __atomic_min_fetch(us, 42, memory_order_release); |
| |
| // CHECK: [[OLD:%.*]] = atomicrmw min ptr [[PTR:%.*]], i8 [[RHS:%.*]] release, align 1 |
| // CHECK: [[TST:%.*]] = icmp slt i8 [[OLD]], [[RHS]] |
| // CHECK: [[NEW:%.*]] = select i1 [[TST]], i8 [[OLD]], i8 [[RHS]] |
| // CHECK: store i8 [[NEW]], ptr |
| *sc = __atomic_min_fetch(sc, 42, memory_order_release); |
| |
| // CHECK: [[OLD:%.*]] = atomicrmw umin ptr {{%.*}}, i64 [[RHS:%.*]] release, align 4 |
| // CHECK: [[TST:%.*]] = icmp ult i64 [[OLD]], [[RHS]] |
| // CHECK: [[NEW:%.*]] = select i1 [[TST]], i64 [[OLD]], i64 [[RHS]] |
| // CHECK: store i64 [[NEW]], ptr |
| *ull = __atomic_min_fetch(ull, 42, memory_order_release); |
| |
| } |
| |
| #endif |
