From 8a79cafc18d72b2e633bd8ebfea0515db69ff36d Mon Sep 17 00:00:00 2001
From: nella <simontupy64@gmail.com>
Date: Wed, 3 Jun 2026 14:54:19 +0200
Subject: [PATCH] Fix depth bug.

---
 kernel/compressor_tree.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/compressor_tree.cc b/kernel/compressor_tree.cc
index ee7b2a2fc..90b632126 100644
--- a/kernel/compressor_tree.cc
+++ b/kernel/compressor_tree.cc
@@ -180,7 +180,7 @@ std::pair<SigSpec, SigSpec> reduce_scheduled(Module *module, std::vector<DepthSi
 				DepthSig d = ready[i + 3];
 
 				auto [sum, carry] = emit_compressor_42(module, a.sig, b.sig, c.sig, d.sig, width);
-				int dmax = std::max({a.depth, a.depth, a.depth, a.depth});
+				int dmax = std::max({a.depth, b.depth, c.depth, d.depth});
 
 				compressed.push_back({sum, dmax + 2});
 				compressed.push_back({carry, dmax + 2});