1 files changed, 18 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/pr77834.c b/gcc/testsuite/gcc.dg/pr77834.c
new file mode 100644
index 00000000000..a9085b95393
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr77834.c
@@ -0,0 +1,18 @@
+/* PR target/77834 */
+/* { dg-do compile } */
+/* { dg-options "-O -ftree-pre -Wno-psabi" } */
+/* { dg-additional-options "-mstringop-strategy=libcall" { target i?86-*-* x86_64-*-* } } */
+
+typedef int V __attribute__ ((vector_size (64)));
+
+V
+foo (V u, V v, int w)
+{
+  do
+    {
+      if (u[0]) v ^= u[w];
+    }
+  while ((V) { 0, u[w] }[1]);
+  u = (V) { v[v[0]], u[u[0]] };
+  return v + u;
+}