From 378e1d8c113b8d765ce559f9ce0f851a19ddafaf Mon Sep 17 00:00:00 2001
From: matt venn <matt@mattvenn.net>
Date: Thu, 8 Jul 2021 12:28:10 +0200
Subject: [PATCH] dump a post techmap dot file

useful for explaining how the flow works. The hierarchy dot file doesn't show any standard cells.
---
 scripts/synth.tcl | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/scripts/synth.tcl b/scripts/synth.tcl
index 36474de48..bd715d832 100755
--- a/scripts/synth.tcl
+++ b/scripts/synth.tcl
@@ -345,6 +345,9 @@ if { [info exists ::env(SYNTH_EXPLORE)] && $::env(SYNTH_EXPLORE) } {
 	write_verilog -noattr -noexpr -nohex -nodec -defparam "$::env(SAVE_NETLIST)"
 }
 
+# dump a post techmap dot file
+show -format dot -prefix $::env(TMP_DIR)/synthesis/post_techmap $vtop
+
 if { $::env(SYNTH_NO_FLAT) } {
 	design -reset
 	read_liberty -lib -ignore_miss_dir -setattr blackbox $::env(LIB_SYNTH_COMPLETE_NO_PG)