2 files changed, 40 insertions, 0 deletions
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 13acfbb..7140f1d 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2019-11-04  Richard Biener  <rguenther@suse.de>
+
+	PR tree-optimization/92301
+	* gcc.dg/pr92301.c: New testcase.
+
 2019-11-03  Martin Sebor  <msebor@redhat.com>
 
 	PR c++/88565
diff --git a/gcc/testsuite/gcc.dg/pr92301.c b/gcc/testsuite/gcc.dg/pr92301.c
new file mode 100644
index 0000000..9a47e12
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr92301.c
@@ -0,0 +1,35 @@
+/* { dg-do run } */
+/* { dg-options "-O3" } */
+
+unsigned int m;
+
+#define N 128
+unsigned int a[N];
+
+unsigned int
+__attribute__((noipa))
+df_count_refs (_Bool include_defs)
+{
+  int size = 0;
+
+  for (unsigned int regno = 0; regno < m; regno++)
+    if (include_defs)
+      size += a[regno];
+  return size;
+}
+
+int main(int argc, char **argv)
+{
+  for (unsigned i = 0; i < N; i++)
+    a[i] = i;
+
+  if (argc == 1)
+    m = 17;
+
+  unsigned int r = df_count_refs(1);
+  __builtin_printf ("r: %d\n", r);
+  if (r != 136)
+    __builtin_abort ();
+
+  return 0;
+}