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