13 lines
558 B
C
13 lines
558 B
C
/// -fprofile-update=atomic (implied by -fsanitize=thread) requires the
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/// (potentially concurrent) counter updates to be atomic.
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// RUN: %clang_cc1 %s -triple x86_64 -emit-llvm -fprofile-update=atomic -ftest-coverage -fprofile-arcs \
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// RUN: -coverage-notes-file /dev/null -coverage-data-file /dev/null -o - | FileCheck %s
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// CHECK-LABEL: void @foo()
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/// Two counters are incremented by __tsan_atomic64_fetch_add.
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// CHECK: atomicrmw add i64* {{.*}} @__llvm_gcov_ctr
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// CHECK-NEXT: atomicrmw sub i32*
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_Atomic(int) cnt;
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void foo() { cnt--; }
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