1 files changed, 60 insertions, 0 deletions
diff --git a/test/profile/instrprof-without-libc.c b/test/profile/instrprof-without-libc.c
new file mode 100644
index 0000000000000..60ca9496c6115
--- /dev/null
+++ b/test/profile/instrprof-without-libc.c
@@ -0,0 +1,60 @@
+// RUN: %clang_profgen -DCHECK_SYMBOLS -O3 -o %t.symbols %s
+// RUN: llvm-nm %t.symbols | FileCheck %s --check-prefix=CHECK-SYMBOLS
+// RUN: %clang_profgen -O3 -o %t %s
+// RUN: %run %t %t.profraw
+// RUN: llvm-profdata merge -o %t.profdata %t.profraw
+// RUN: %clang_profuse=%t.profdata -o - -S -emit-llvm %s | FileCheck %s
+
+#include <stdint.h>
+#include <stdlib.h>
+
+#ifndef CHECK_SYMBOLS
+#include <stdio.h>
+#endif
+
+int __llvm_profile_runtime = 0;
+uint64_t __llvm_profile_get_size_for_buffer(void);
+int __llvm_profile_write_buffer(char *);
+int write_buffer(uint64_t, const char *);
+int main(int argc, const char *argv[]) {
+  // CHECK-LABEL: define {{.*}} @main(
+  // CHECK: br i1 %{{.*}}, label %{{.*}}, label %{{.*}}, !prof ![[PD1:[0-9]+]]
+  if (argc < 2)
+    return 1;
+
+  const uint64_t MaxSize = 10000;
+  static char Buffer[MaxSize];
+
+  uint64_t Size = __llvm_profile_get_size_for_buffer();
+  if (Size > MaxSize)
+    return 1;
+  int Write = __llvm_profile_write_buffer(Buffer);
+  if (__llvm_profile_write_buffer(Buffer))
+    return Write;
+
+#ifdef CHECK_SYMBOLS
+  // Don't write it out.  Since we're checking the symbols, we don't have libc
+  // available.
+  return 0;
+#else
+  // Actually write it out so we can FileCheck the output.
+  FILE *File = fopen(argv[1], "w");
+  if (!File)
+    return 1;
+  if (fwrite(Buffer, 1, Size, File) != Size)
+    return 1;
+  return fclose(File);
+#endif
+}
+// CHECK: ![[PD1]] = metadata !{metadata !"branch_weights", i32 1, i32 2}
+
+// CHECK-SYMBOLS-NOT: ___cxx_global_var_init
+// CHECK-SYMBOLS-NOT: ___llvm_profile_register_write_file_atexit
+// CHECK-SYMBOLS-NOT: ___llvm_profile_set_filename
+// CHECK-SYMBOLS-NOT: ___llvm_profile_write_file
+// CHECK-SYMBOLS-NOT: _fdopen
+// CHECK-SYMBOLS-NOT: _fopen
+// CHECK-SYMBOLS-NOT: _fwrite
+// CHECK-SYMBOLS-NOT: _getenv
+// CHECK-SYMBOLS-NOT: _malloc
+// CHECK-SYMBOLS-NOT: _open