1 files changed, 25 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/pr36504.c b/gcc/testsuite/gcc.dg/pr36504.c
new file mode 100644
index 000000000..dbcf76648
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr36504.c
@@ -0,0 +1,25 @@
+/* PR tree-optimization/36504 */
+/* { dg-do compile } */
+/* { dg-options "-O3 -fprefetch-loop-arrays -w" } */
+
+struct A { struct { int a; } b[8]; };
+struct B { int c; int d; };
+struct C { struct B d; };
+
+void bar (struct C *, int);
+
+struct B
+foo (struct C *p, struct A *e, int b)
+{
+  struct B q;
+  bar (p, e->b[b].a);
+  return q;
+}
+
+void
+baz (int b, struct A *e)
+{
+  struct C p;
+  for (; b; ++b)
+    p.d = foo (&p, e, b);
+}