From 43631751490235d4fd4c6a05cac39cefcb5e912a Mon Sep 17 00:00:00 2001
From: James Cherry <cherry@parallaxsw.com>
Date: Thu, 7 Mar 2024 10:20:18 -0700
Subject: [PATCH] Sdc::ensureClkGroupExclusions check if necessary

Signed-off-by: James Cherry <cherry@parallaxsw.com>
---
 sdc/Sdc.cc | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/sdc/Sdc.cc b/sdc/Sdc.cc
index 2f345a13..4770bdae 100644
--- a/sdc/Sdc.cc
+++ b/sdc/Sdc.cc
@@ -1908,8 +1908,10 @@ Sdc::makeClockGroup(ClockGroups *clk_groups,
 void
 Sdc::ensureClkGroupExclusions()
 {
-  for (auto name_clk_groups : clk_groups_name_map_)
-    makeClkGroupExclusions(name_clk_groups.second);
+  if (clk_group_exclusions_.empty()) {
+    for (auto name_clk_groups : clk_groups_name_map_)
+      makeClkGroupExclusions(name_clk_groups.second);
+  }
 }
    
 void