1 files changed, 30 insertions, 0 deletions
diff --git a/test/CodeGen/code-coverage.c b/test/CodeGen/code-coverage.c
new file mode 100644
index 0000000..1b87d64
--- /dev/null
+++ b/test/CodeGen/code-coverage.c
@@ -0,0 +1,30 @@
+// RUN: %clang_cc1 -emit-llvm -disable-red-zone -femit-coverage-data %s -o - | FileCheck %s
+// RUN: %clang_cc1 -emit-llvm -disable-red-zone -femit-coverage-data -coverage-no-function-names-in-data %s -o - | FileCheck %s --check-prefix WITHOUTNAMES
+
+// <rdar://problem/12843084>
+
+int test1(int a) {
+  switch (a % 2) {
+  case 0:
+    ++a;
+  case 1:
+    a /= 2;
+  }
+  return a;
+}
+
+// Check that the noredzone flag is set on the generated functions.
+
+// CHECK: void @__llvm_gcov_indirect_counter_increment(i32* %{{.*}}, i64** %{{.*}}) unnamed_addr [[NRZ:#[0-9]+]]
+
+// Inside llvm_gcov_writeout, check that -coverage-no-function-names-in-data
+// passes null as the function name.
+// CHECK: void @__llvm_gcov_writeout() unnamed_addr [[NRZ]]
+// CHECK: call void @llvm_gcda_emit_function({{.*}}, i8* getelementptr {{.*}}, {{.*}})
+// WITHOUTNAMES: void @__llvm_gcov_writeout() unnamed_addr
+// WITHOUTNAMES: call void @llvm_gcda_emit_function({{.*}}, i8* null, {{.*}})
+
+// CHECK: void @__llvm_gcov_flush() unnamed_addr [[NRZ]]
+// CHECK: void @__llvm_gcov_init() unnamed_addr [[NRZ]]
+
+// CHECK: attributes [[NRZ]] = { {{.*}}noredzone{{.*}} }