From 0e6c83027f24cdf7082606a5631468ad28f41574 Mon Sep 17 00:00:00 2001
From: Clifford Wolf <clifford@clifford.at>
Date: Mon, 15 Jul 2019 12:12:21 +0200
Subject: [PATCH] Add log_checkpoint function and use it in opt_muxtree

Signed-off-by: Clifford Wolf <clifford@clifford.at>
---
 kernel/log.cc             | 7 +++++++
 kernel/log.h              | 1 +
 passes/opt/opt_muxtree.cc | 1 +
 3 files changed, 9 insertions(+)

diff --git a/kernel/log.cc b/kernel/log.cc
index a7820950c..1a2c89a9c 100644
--- a/kernel/log.cc
+++ b/kernel/log.cc
@@ -420,6 +420,13 @@ void log_pop()
 	log_flush();
 }
 
+void log_checkpoint()
+{
+	log_id_cache.clear();
+	IdString::checkpoint();
+	log_flush();
+}
+
 #if (defined(__linux__) || defined(__FreeBSD__)) && defined(YOSYS_ENABLE_PLUGINS)
 void log_backtrace(const char *prefix, int levels)
 {
diff --git a/kernel/log.h b/kernel/log.h
index 3e1facae8..3328018f3 100644
--- a/kernel/log.h
+++ b/kernel/log.h
@@ -130,6 +130,7 @@ void log_spacer();
 void log_push();
 void log_pop();
 
+void log_checkpoint();
 void log_backtrace(const char *prefix, int levels);
 void log_reset_stack();
 void log_flush();
diff --git a/passes/opt/opt_muxtree.cc b/passes/opt/opt_muxtree.cc
index 6511e091b..79f0e9639 100644
--- a/passes/opt/opt_muxtree.cc
+++ b/passes/opt/opt_muxtree.cc
@@ -204,6 +204,7 @@ struct OptMuxtreeWorker
 
 		log("  Analyzing evaluation results.\n");
 		log_assert(glob_abort_cnt > 0);
+		log_checkpoint();
 
 		for (auto &mi : mux2info)
 		{