[committed][GCC][PATCH][AArch64] Fix unused variable warning breaking bootstrap.

[Tamar Christina]

Hi All,

This marks the parameter &fi as unused so it doesn't
cause a boostrap failure.

Bootstrapped aarch64-none-linux-gnu.

committed under the obvious rule.

Thanks,
Tamar

gcc/ChangeLog:

2020-01-18  Tamar Christina  <tamar.christ...@arm.com>

        * config/aarch64/aarch64-sve-builtins-base.cc (memory_vector_mode):
        Mark parameter unused.

-- 

diff --git a/gcc/config/aarch64/aarch64-sve-builtins-base.cc b/gcc/config/aarch64/aarch64-sve-builtins-base.cc
index 868a6afaf2e77a77df8a97e2c874d52f5c0b7029..b48932f6a4fd265e1f5d0bd62d222c163857b63e 100644
--- a/gcc/config/aarch64/aarch64-sve-builtins-base.cc
+++ b/gcc/config/aarch64/aarch64-sve-builtins-base.cc
@@ -1206,7 +1206,7 @@ class svld1ro_impl : public load_replicate
 {
 public:
   machine_mode
-  memory_vector_mode (const function_instance &fi) const OVERRIDE
+  memory_vector_mode (const function_instance &fi ATTRIBUTE_UNUSED) const OVERRIDE
   {
     return OImode;
   }