misc: Add explicit overrides and fix other clang >= 3.5 issues

This patch adds explicit overrides as this is now required when using
"-Wall" with clang >= 3.5, the latter now part of the most recent
XCode. The patch consequently removes "virtual" for those methods
where "override" is added. The latter should be enough of an
indication.

As part of this patch, a few minor issues that clang >= 3.5 complains
about are also resolved (unused methods and variables).

1 files changed, 6 insertions, 6 deletions

diff --git a/src/mem/cache/cache.hh b/src/mem/cache/cache.hh
index 0ee0696d8..ec436201b 100644
--- a/src/mem/cache/cache.hh
+++ b/src/mem/cache/cache.hh
@@ -334,9 +334,9 @@ class Cache : public BaseCache
     PacketPtr cleanEvictBlk(CacheBlk *blk);
 
 
-    void memWriteback();
-    void memInvalidate();
-    bool isDirty() const;
+    void memWriteback() override;
+    void memInvalidate() override;
+    bool isDirty() const override;
 
     /**
      * Cache block visitor that writes back dirty cache blocks using
@@ -410,11 +410,11 @@ class Cache : public BaseCache
         return tags->findBlock(addr, is_secure);
     }
 
-    bool inCache(Addr addr, bool is_secure) const {
+    bool inCache(Addr addr, bool is_secure) const override {
         return (tags->findBlock(addr, is_secure) != 0);
     }
 
-    bool inMissQueue(Addr addr, bool is_secure) const {
+    bool inMissQueue(Addr addr, bool is_secure) const override {
         return (mshrQueue.findMatch(addr, is_secure) != 0);
     }
 
@@ -430,7 +430,7 @@ class Cache : public BaseCache
     /** Non-default destructor is needed to deallocate memory. */
     virtual ~Cache();
 
-    void regStats();
+    void regStats() override;
 
     /** serialize the state of the caches
      * We currently don't support checkpointing cache state, so this panics.