From 41a3d86d8cd8cb65b43f72324454d4b5d5ae32b7 Mon Sep 17 00:00:00 2001
From: James Cherry <cherry@CerezoBook.local>
Date: Wed, 27 May 2026 10:50:44 -0700
Subject: [PATCH] Sta::unsetAnnotatedSlew

Signed-off-by: James Cherry <cherry@CerezoBook.local>
---
 include/sta/Sta.hh |  4 ++++
 search/Sta.cc      | 19 ++++++++++++++++++-
 2 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/include/sta/Sta.hh b/include/sta/Sta.hh
index 6bc3c8eb..913608aa 100644
--- a/include/sta/Sta.hh
+++ b/include/sta/Sta.hh
@@ -899,6 +899,10 @@ public:
                         const MinMaxAll *min_max,
                         const RiseFallBoth *rf,
                         float slew);
+  void unsetAnnotatedSlew(Vertex *vertex,
+                          const Scene *scene,
+                          const MinMaxAll *min_max,
+                          const RiseFallBoth *rf);
   void writeSdf(std::string_view filename,
                 const Scene *scene,
                 char divider,
diff --git a/search/Sta.cc b/search/Sta.cc
index 320e0178..27b2119b 100644
--- a/search/Sta.cc
+++ b/search/Sta.cc
@@ -3875,7 +3875,6 @@ Sta::setAnnotatedSlew(Vertex *vertex,
                       const RiseFallBoth *rf,
                       float slew)
 {
-  ensureGraph();
   for (const MinMax *mm : min_max->range()) {
     DcalcAPIndex ap_index = scene->dcalcAnalysisPtIndex(mm);
     for (const RiseFall *rf1 : rf->range()) {
@@ -3887,6 +3886,24 @@ Sta::setAnnotatedSlew(Vertex *vertex,
   graph_delay_calc_->delayInvalid(vertex);
 }
 
+void
+Sta::unsetAnnotatedSlew(Vertex *vertex,
+                        const Scene *scene,
+                        const MinMaxAll *min_max,
+                        const RiseFallBoth *rf)
+{
+  for (const MinMax *mm : min_max->range()) {
+    DcalcAPIndex ap_index = scene->dcalcAnalysisPtIndex(mm);
+    for (const RiseFall *rf1 : rf->range()) {
+      vertex->setSlewAnnotated(false, rf1, ap_index);
+    }
+  }
+  if (vertex->isDriver(network_))
+    graph_delay_calc_->delayInvalid(vertex);
+  else
+    delaysInvalidFromFanin(vertex);
+}
+
 void
 Sta::writeSdf(std::string_view filename,
               const Scene *scene,