1 files changed, 35 insertions, 0 deletions
diff --git a/test/profile/instrprof-write-file-only.c b/test/profile/instrprof-write-file-only.c
new file mode 100644
index 000000000000..0dd61de39f1a
--- /dev/null
+++ b/test/profile/instrprof-write-file-only.c
@@ -0,0 +1,35 @@
+// RUN: %clang_profgen -o %t -O3 %s
+// RUN: env LLVM_PROFILE_FILE=%t.profraw %run %t
+// RUN: llvm-profdata merge -o %t.profdata %t.profraw
+// RUN: %clang_profuse=%t.profdata -o - -S -emit-llvm %s | FileCheck %s
+
+int __llvm_profile_runtime = 0;
+void __llvm_profile_initialize_file(void);
+int __llvm_profile_write_file(void);
+void __llvm_profile_set_filename(const char *);
+int foo(int);
+int main(int argc, const char *argv[]) {
+  // CHECK-LABEL: define {{.*}} @main(
+  // CHECK: br i1 %{{.*}}, label %{{.*}}, label %{{.*}}, !prof ![[PD1:[0-9]+]]
+  if (argc > 1)
+    return 1;
+
+  // Since the runtime has been suppressed, initialize the file name, as the
+  // writing will fail below as the file name has not been specified.
+  __llvm_profile_initialize_file();
+
+  // Write out the profile.
+  __llvm_profile_write_file();
+
+  // Change the profile.
+  return foo(0);
+}
+int foo(int X) {
+  // There should be no profiling information for @foo, since it was called
+  // after the profile was written (and the atexit was suppressed by defining
+  // profile_runtime).
+  // CHECK-LABEL: define {{.*}} @foo(
+  // CHECK: br i1 %{{.*}}, label %{{.*}}, label %{{[^,]+$}}
+  return X <= 0 ? -X : X;
+}
+// CHECK: ![[PD1]] = metadata !{metadata !"branch_weights", i32 1, i32 2}