| /// -fprofile-update=atomic (implied by -fsanitize=thread) requires the |
| /// (potentially concurrent) counter updates to be atomic. |
| // RUN: %clang_cc1 %s -triple x86_64 -emit-llvm -fprofile-update=atomic \ |
| // RUN: -coverage-notes-file /dev/null -coverage-data-file /dev/null -o - | FileCheck %s |
| |
| // CHECK-LABEL: void @foo() |
| /// Two counters are incremented by __tsan_atomic64_fetch_add. |
| // CHECK: atomicrmw add ptr @__llvm_gcov_ctr{{.*}} monotonic, align 8 |
| // CHECK-NEXT: atomicrmw sub ptr |
| |
| _Atomic(int) cnt; |
| void foo(void) { cnt--; } |
