From c41f4d2e7b67c8861addf1f5212463ff0bfcbea1 Mon Sep 17 00:00:00 2001
From: Alec Vercruysse <vercruysse.alec@gmail.com>
Date: Mon, 3 Apr 2023 13:44:07 -0700
Subject: [PATCH] Exclude CacheLRU log2 function from coverage

---
 src/cache/cacheLRU.sv | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/cache/cacheLRU.sv b/src/cache/cacheLRU.sv
index 780807943..125a4ae10 100644
--- a/src/cache/cacheLRU.sv
+++ b/src/cache/cacheLRU.sv
@@ -67,11 +67,14 @@ module cacheLRU
   assign AllValid = &ValidWay;
 
   ///// Update replacement bits.
+
+  // coverage off: Untestable without varying NUMWAYS.
   function integer log2 (integer value);
     for (log2=0; value>0; log2=log2+1)
       value = value>>1;
     return log2;
   endfunction // log2
+  // coverage on
 
   // On a miss we need to ignore HitWay and derive the new replacement bits with the VictimWay.
   mux2 #(NUMWAYS) WayMux(HitWay, VictimWay, SetValid, Way);