1 files changed, 34 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-24.c b/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-24.c
new file mode 100644
index 000000000..c68321879
--- /dev/null
+++ b/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-24.c
@@ -0,0 +1,34 @@
+/* { dg-do compile } */
+/* { dg-options "-O -fno-tree-sra -fdump-tree-fre1" } */
+
+int foo(void)
+{
+  int a[16] = {};
+  return a[3];
+}
+
+int bar(void)
+{
+  int a[16];
+  __builtin_memset (a, 0, sizeof(a));
+  return a[3];
+}
+
+struct X { int i; };
+int baz(void)
+{
+  struct X a,b;
+  a.i = 0;
+  b = a;
+  return b.i;
+}
+
+int bazzoo (void)
+{
+  struct X b, a = {};
+  b = a;
+  return b.i;
+}
+
+/* { dg-final { scan-tree-dump-times "= 0;" 5 "fre1" } } */
+/* { dg-final { cleanup-tree-dump "fre1" } } */