Cache: Split invalidateBlk up to seperate block vs. tags

This seperates the functionality to clear the state in a block into
blk.hh and the functionality to udpate the tag information into the
tags.  This gets rid of the case where calling invalidateBlk on an
already-invalid block does something different than calling it on a
valid block, which was confusing.

1 files changed, 10 insertions, 0 deletions

diff --git a/src/mem/cache/blk.hh b/src/mem/cache/blk.hh
index 91970e09b..73f569e6a 100644
--- a/src/mem/cache/blk.hh
+++ b/src/mem/cache/blk.hh
@@ -189,6 +189,16 @@ class CacheBlk
     }
 
     /**
+     * Invalidate the block and clear all state.
+     */
+    void invalidate()
+    {
+        status = 0;
+        isTouched = false;
+        clearLoadLocks();
+    }
+
+    /**
      * Check to see if a block has been written.
      * @return True if the block is dirty.
      */