From 04b0a1f80d3c0d85c32270763e355da15e5288f6 Mon Sep 17 00:00:00 2001
From: Martin Whitaker <icarus@martin-whitaker.me.uk>
Date: Sun, 13 Dec 2020 21:49:42 +0000
Subject: [PATCH] Add extra debug output.

(cherry picked from commit fbd87b4fee19d464fdadeaceeff4228340942808)
---
 elaborate.cc | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/elaborate.cc b/elaborate.cc
index 5de343e74..6036600ba 100644
--- a/elaborate.cc
+++ b/elaborate.cc
@@ -3905,8 +3905,13 @@ NetProc* PCallTask::elaborate_build_call_(Design*des, NetScope*scope,
 	   task, all the assignments, etc. Just return a no-op. */
 
       if (const NetBlock*tp = dynamic_cast<const NetBlock*>(def->proc())) {
-	    if (tp->proc_first() == 0)
+	    if (tp->proc_first() == 0) {
+		  if (debug_elaborate) {
+			cerr << get_fileline() << ": PCallTask::elaborate_build_call_: "
+			     << "Eliding call to empty task " << task->basename() << endl;
+		  }
 		  return block;
+	    }
       }
 
         /* If this is an automatic task, generate a statement to