From 551d36d384c587d3cee667d44255a055afcdc30e Mon Sep 17 00:00:00 2001
From: Carlo Alberto Ferraris <cafxx@strayorange.com>
Date: Thu, 3 Nov 2022 21:18:21 +0900
Subject: [PATCH] opt_muxtree: set iterations limit based on number of muxes

---
 passes/opt/opt_muxtree.cc | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/passes/opt/opt_muxtree.cc b/passes/opt/opt_muxtree.cc
index 100b1b495..fc71dc8c5 100644
--- a/passes/opt/opt_muxtree.cc
+++ b/passes/opt/opt_muxtree.cc
@@ -36,7 +36,7 @@ struct OptMuxtreeWorker
 	RTLIL::Module *module;
 	SigMap assign_map;
 	int removed_count;
-	int glob_abort_cnt = 100000;
+	int glob_abort_cnt;
 
 	struct bitinfo_t {
 		bool seen_non_mux;
@@ -146,6 +146,10 @@ struct OptMuxtreeWorker
 			log("  No muxes found in this module.\n");
 			return;
 		}
+		
+		// Limit the number of iterations based on the number of muxes.
+		// The multiplier (100) is arbitrary.
+		glob_abort_cnt = GetSize(mux2info) * 100;
 
 		// Populate mux2info[].ports[]:
 		//	.input_muxes