12 lines
512 B
C
12 lines
512 B
C
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/// -fprofile-update=atomic requires the (potentially concurrent) counter updates to be atomic.
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// RUN: %clang_cc1 %s -triple x86_64 -emit-llvm -fprofile-update=atomic \
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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 ptr @__llvm_gcov_ctr{{.*}} monotonic, align 8
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// CHECK-NEXT: atomicrmw sub ptr
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_Atomic(int) cnt;
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void foo(void) { cnt--; }
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