1 files changed, 31 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-14.c b/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-14.c
new file mode 100644
index 000000000..2b677d5b5
--- /dev/null
+++ b/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-14.c
@@ -0,0 +1,31 @@
+/* { dg-do compile } */
+/* { dg-options "-O -fno-tree-sra -fdump-tree-fre1-details" } */
+
+/* Should be optimized, propagating &a into (*p)[i].  */
+
+struct Foo
+{
+  void *data;
+  double size;
+};
+void bar(double *);
+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];
+      /* We want a PHI for the VOP for accessing tmp1.data, so place
+ 	 this store to tmp1 here.  */
+      tmp1.size -= 1.0;
+    }
+  bar(a);
+}
+
+/* { dg-final { scan-tree-dump "Replaced tmp1.data with &a" "fre1" } } */
+/* { dg-final { cleanup-tree-dump "fre1" } } */