Imported Upstream version 6.0.0.172

Former-commit-id: f3cc9b82f3e5bd8f0fd3ebc098f789556b44e9cd

external/llvm/test/tools/sancov/Inputs/test.cpp

@@ -0,0 +1,19 @@
+// compile & generate coverage data using:
+// clang++ -g -o test-linux_x86_64 -fsanitize=address -fsanitize-coverage=bb test.cpp ../Inputs/foo.cpp
+// ASAN_OPTIONS="coverage=1" ./test-linux_x86_64 && mv test-linux_x86_64.??*.sancov test-linux_x86_64.0.sancov
+// ASAN_OPTIONS="coverage=1" ./test-linux_x86_64 1 && mv test-linux_x86_64.??*.sancov test-linux_x86_64.1.sancov
+
+#include <stdio.h>
+#include <string>
+
+void foo();
+
+__attribute__((noinline))
+std::string bar(std::string str) { printf("bar\n"); return str; }
+
+int main(int argc, char **argv) {
+    if (argc == 2)
+        foo();
+    bar("str");
+    printf("main\n");
+}