diff --git a/gcc/match.pd b/gcc/match.pd
index 88f2e37a2b89..d3af36f8de3e 100644
--- a/gcc/match.pd
+++ b/gcc/match.pd
@@ -8121,6 +8121,7 @@ and,
 			 ? gimple_assign_rhs1 (SSA_NAME_DEF_STMT (@0)) : @0);
 	    tree elt = ctor_single_nonzero_element (ctor); }
       (if (elt
+	   && types_match (type, TREE_TYPE (elt))
 	   && !HONOR_SNANS (type)
 	   && !HONOR_SIGNED_ZEROS (type))
 	{ elt; }))))
diff --git a/gcc/testsuite/gcc.target/aarch64/torture/pr121772.c b/gcc/testsuite/gcc.target/aarch64/torture/pr121772.c
new file mode 100644
index 000000000000..d47a026c3ce6
--- /dev/null
+++ b/gcc/testsuite/gcc.target/aarch64/torture/pr121772.c
@@ -0,0 +1,6 @@
+/* { dg-do compile } */
+/* { dg-options "-fchecking" } */
+#include <arm_neon.h>
+int16_t f(int16x4_t b) {
+  return vaddvq_s16(vcombine_s16(b, vdup_n_s16 (0)));
+}