Imported Upstream version 6.10.0.49

Former-commit-id: 1d6753294b2993e1fbf92de9366bb9544db4189b

external/llvm-project/compiler-rt/test/tsan/race_top_suppression.cc

@@ -0,0 +1,29 @@
+// RUN: echo "race_top:TopFunction" > %t.supp
+// RUN: %clangxx_tsan -O1 %s -o %t
+// RUN: %env_tsan_opts=suppressions='%t.supp' %run %t 2>&1 | FileCheck %s
+// RUN: rm %t.supp
+#include "test.h"
+
+int Global;
+
+void TopFunction(int *p) {
+  *p = 1;
+}
+
+void *Thread(void *x) {
+  barrier_wait(&barrier);
+  TopFunction(&Global);
+  return 0;
+}
+
+int main() {
+  barrier_init(&barrier, 2);
+  pthread_t t;
+  pthread_create(&t, 0, Thread, 0);
+  Global--;
+  barrier_wait(&barrier);
+  pthread_join(t, 0);
+  fprintf(stderr, "DONE\n");
+}
+
+// CHECK-NOT: WARNING: ThreadSanitizer: data race