From 2dc70e6756fab40226e490231a7be672218b010b Mon Sep 17 00:00:00 2001
From: Cho Moon <cmoon@precisioninno.com>
Date: Tue, 7 Apr 2026 23:20:30 +0000
Subject: [PATCH] changed 3 RSZ errors to warnings

Signed-off-by: Cho Moon <cmoon@precisioninno.com>
---
 src/rsz/src/Rebuffer.cc | 28 +++++++++++++++++++---------
 1 file changed, 19 insertions(+), 9 deletions(-)

diff --git a/src/rsz/src/Rebuffer.cc b/src/rsz/src/Rebuffer.cc
index 1429f1b487a..642c3cdb169 100644
--- a/src/rsz/src/Rebuffer.cc
+++ b/src/rsz/src/Rebuffer.cc
@@ -625,10 +625,11 @@ BnetPtr Rebuffer::bufferForTiming(const BnetPtr& tree,
                 // of the algorithm (wire_length_step_ should have been chosen
                 // to always allow a minimal size buffer to drive itself without
                 // ERC)
-                logger_->critical(RSZ,
-                                  2008,
-                                  "buffering pin {}: wire step options empty",
-                                  network_->name(pin_));
+                logger_->warn(RSZ,
+                              2008,
+                              "Skipping net buffering because no buffer can "
+                              "drive the wire load on net connected to pin {}.",
+                              network_->name(pin_));
               }
               return opts1;
             }
@@ -673,10 +674,13 @@ BnetPtr Rebuffer::bufferForTiming(const BnetPtr& tree,
               insertBufferOptions(opts, level, std::min(remaining_wl, step));
 
               if (opts.empty()) {
-                logger_->critical(RSZ,
-                                  2007,
-                                  "buffering pin {}: wire step options empty",
-                                  network_->name(pin_));
+                logger_->warn(RSZ,
+                              2007,
+                              "Skipping buffer insertion along long wire "
+                              "segment on net connected to pin {} because no "
+                              "buffer can drive the wire load.",
+                              network_->name(pin_));
+                break;
               }
               round++;
             }
@@ -775,7 +779,13 @@ BnetPtr Rebuffer::bufferForTiming(const BnetPtr& tree,
       tree);
 
   if (top_opts.empty()) {
-    logger_->critical(RSZ, 2009, "buffering pin {}: no options produced");
+    logger_->warn(
+        RSZ,
+        2009,
+        "Skipping buffering because no valid buffering solution satisfying the "
+        "design rules can be found for net connected to pin {}.",
+        network_->name(pin_));
+    return nullptr;
   }
 
   FixedDelay best_slack = -FixedDelay::INF;