1 files changed, 42 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/pr17598.c b/gcc/testsuite/gcc.dg/tree-ssa/pr17598.c
new file mode 100644
index 000000000..ac912a2b1
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa/pr17598.c
@@ -0,0 +1,42 @@
+/* { dg-do compile } */
+/* { dg-options "-fdump-tree-gimple" } */
+
+struct f
+{
+  int i;
+  int j;
+};
+
+struct g
+{
+  int i;
+  struct f j;
+  struct f *k;
+};
+
+int foo(struct f *x, struct f *y)
+{
+  return &x->j == &y->j; /* x == y */
+}
+
+struct f y;
+int bar(struct f *x)
+{
+  return &x->j == &y.j; /* x == &y */
+}
+
+struct g yy;
+int foobar(struct g *x)
+{
+  return &x->j.i == &yy.j.i; /* x == &yy */
+}
+int foobar2(struct g *x)
+{
+  return &x->k->i == &yy.k->i; /* x->k == yy.k */
+}
+
+/* { dg-final { scan-tree-dump-times "x == y" 1 "gimple" } } */
+/* { dg-final { scan-tree-dump-times "x == &y" 2 "gimple" } } */
+/* { dg-final { scan-tree-dump "x->k" "gimple" } } */
+/* { dg-final { scan-tree-dump "yy.k" "gimple" } } */
+/* { dg-final { cleanup-tree-dump "gimple" } } */