1 files changed, 27 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-13.c b/gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-13.c
new file mode 100644
index 000000000..972e6c69e
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-13.c
@@ -0,0 +1,27 @@
+/* { dg-do compile } */
+/* { dg-options "-O -fstrict-aliasing -fno-tree-sra -fdump-tree-fre-details" } */
+
+/* Should be optimized, propagating &a into (*p)[i].  */
+
+/* For this testcase we need TBAA to work.  */
+
+struct Foo
+{
+  void *data;
+  int size;
+};
+void foo(double (*q)[4], struct Foo *tmp1)
+{
+  double a[4];
+  int i;
+  tmp1->data = &a;
+  tmp1->size = 4;
+  for (i=0; i<4; ++i)
+    {
+      double (*p)[4] = tmp1->data;
+      (*p)[i] = (*q)[i];
+    }
+}
+
+/* { dg-final { scan-tree-dump "Replaced tmp1_.\\\(D\\\)->data with &a" "fre" } } */
+/* { dg-final { cleanup-tree-dump "fre" } } */