inorder: remove events for zero-cycle resources

if a resource has a zero cycle latency (e.g. RegFile write), then dont allocate an event
for it to use

1 files changed, 5 insertions, 1 deletions

diff --git a/src/cpu/inorder/resources/use_def.cc b/src/cpu/inorder/resources/use_def.cc
index 85bf14500..19246a30b 100644
--- a/src/cpu/inorder/resources/use_def.cc
+++ b/src/cpu/inorder/resources/use_def.cc
@@ -92,7 +92,11 @@ void
 UseDefUnit::init()
 {
     // Set Up Resource Events to Appropriate Resource BandWidth
-    resourceEvent = new ResourceEvent[width];
+    if (latency > 0) {
+        resourceEvent = new ResourceEvent[width];
+    } else {
+        resourceEvent = NULL;
+    }
 
     for (int i = 0; i < width; i++) {
         reqs[i] = new UseDefRequest(this);