From: Eddie Hung <eddie@fpgeh.com>
Date: Tue, 16 Apr 2019 20:10:13 +0000 (-0700)
Subject: abc9 to call "setundef -zero" behaving as for abc
X-Git-Tag: working-ls180~1237^2~228
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=afcb86c3d143c95643855da1159b0f245f75262c;p=yosys.git

abc9 to call "setundef -zero" behaving as for abc
---

diff --git a/passes/techmap/abc9.cc b/passes/techmap/abc9.cc
index edc07092b..3c4919b1f 100644
--- a/passes/techmap/abc9.cc
+++ b/passes/techmap/abc9.cc
@@ -403,6 +403,9 @@ void abc9_module(RTLIL::Design *design, RTLIL::Module *current_module, std::stri
 	RTLIL::Selection& sel = design->selection_stack.back();
 	sel.select(module);
 
+	// Behave as for "abc" where BLIF writer implicitly outputs all undef as zero
+	Pass::call(design, "setundef -zero");
+
 	Pass::call(design, "aigmap");
 
 	handle_loops(design);