[PATCH] arm: [MVE intrinsics] Add default clause to full_width_access::memory_vector_mode

[Christophe Lyon]

My recent commit 0c2037d9d93a8f768cb11698ff794278246bb31f added a
switch statement lacking a default clause, leading to warnings or
errors when building with --enable-werror-always.

Fix by adding an empty default.

Committed as obvious.

2023-11-23  Christophe Lyon  <christophe.l...@linaro.org>

        gcc/
        * config/arm/arm-mve-builtins-functions.h
        (full_width_access::memory_vector_mode): Add default clause.
---
 gcc/config/arm/arm-mve-builtins-functions.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/gcc/config/arm/arm-mve-builtins-functions.h 
b/gcc/config/arm/arm-mve-builtins-functions.h
index 6d234a2dd7c..1c93e6436b5 100644
--- a/gcc/config/arm/arm-mve-builtins-functions.h
+++ b/gcc/config/arm/arm-mve-builtins-functions.h
@@ -1013,6 +1013,8 @@ public:
       case E_V8HFmode:
        mode = E_V8HImode;
        break;
+      default:
+       break;
       }
 
     if (m_vectors_per_tuple != 1)
-- 
2.34.1