1 files changed, 21 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/forwprop-2.c b/gcc/testsuite/gcc.dg/tree-ssa/forwprop-2.c
new file mode 100644
index 000000000..2aefb9ace
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa/forwprop-2.c
@@ -0,0 +1,21 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -fdump-tree-forwprop1" }  */
+
+/* We should be able to optimize this to b->t[i] = 1 during
+   early optimizations.  */
+
+struct a
+{
+  char t[10];
+};
+
+struct a *b;
+
+void f(__SIZE_TYPE__ i)
+{
+  char *c = b->t;
+  c[i] = 1;
+}
+
+/* { dg-final { scan-tree-dump-times "t\\\[i.*\\\].* = 1;" 1 "forwprop1" } } */
+/* { dg-final { cleanup-tree-dump "forwprop?" } } */