From 83e13cef46d087174a508c396cee0a638ee9dffd Mon Sep 17 00:00:00 2001
From: David Harris <david_harris@hmc.edu>
Date: Thu, 23 Mar 2023 17:25:27 -0700
Subject: [PATCH] 100% IEU coverage

---
 sim/coverage-exclusions-rv64gc.do | 19 +++++++++++++++----
 tests/coverage/ieu.S              |  2 ++
 2 files changed, 17 insertions(+), 4 deletions(-)

diff --git a/sim/coverage-exclusions-rv64gc.do b/sim/coverage-exclusions-rv64gc.do
index 8f79b7d5..9905c897 100644
--- a/sim/coverage-exclusions-rv64gc.do
+++ b/sim/coverage-exclusions-rv64gc.do
@@ -24,11 +24,22 @@
 #// and limitations under the License.
 #////////////////////////////////////////////////////////////////////////////////////////////////
 
+# LZA (i<64) statement confuses coverage tool 
+# This is ugly to exlcude the whole file - is there a better option
+coverage exclude -srcfile lzc.sv 
+
+
+######################
+# Toggle exclusions
+#   Not used because toggle coverage isn't measured
+######################
+
 # Exclude DivBusyE from all design units because rv64gc uses the fdivsqrt unit for integer division
-coverage exclude -togglenode DivBusyE -du *
+#coverage exclude -togglenode DivBusyE -du *
 # Exclude QuotM and RemM from MDU because rv64gc uses the fdivsqrt rather tha div unit for integer division
-coverage exclude -togglenode /dut/core/mdu/mdu/QuotM
-coverage exclude -togglenode /dut/core/mdu/mdu/RemM
+#coverage exclude -togglenode /dut/core/mdu/mdu/QuotM
+#coverage exclude -togglenode /dut/core/mdu/mdu/RemM
 
 # StallFCause is hardwired to 0
-coverage exclude -togglenode /dut/core/hzu/StallFCause
+#coverage exclude -togglenode /dut/core/hzu/StallFCause
+
diff --git a/tests/coverage/ieu.S b/tests/coverage/ieu.S
index 8467f2d4..e1b23937 100644
--- a/tests/coverage/ieu.S
+++ b/tests/coverage/ieu.S
@@ -33,6 +33,8 @@ main:
     clz t1, t0
     li t0, -1
     clz t1, t0
+    li t0, 1
+    clz t1, t0
 
     # Test forwarding from store conditional
     lr.w t0, 0(a0)