1 files changed, 19 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/pr51505.c b/gcc/testsuite/gcc.dg/pr51505.c
new file mode 100644
index 00000000000..dbcd3226d7d
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr51505.c
@@ -0,0 +1,19 @@
+/* PR rtl-optimization/51505 */
+/* { dg-do compile } */
+/* { dg-options "-O --param max-cse-insns=1" } */
+struct S
+{
+char a[256];
+};
+
+int bar(struct S, char[16]);
+
+void foo ()
+{
+  struct S u, s1, s2;
+  char e[256];
+  char i;
+  e[i] = ~s1.a[i] & s2.a[i];
+  if (bar(u, e))
+    __builtin_abort ();
+}