From ada1d6a6034fdfbbf1d460b5069416f723a9062d Mon Sep 17 00:00:00 2001
From: whitequark <whitequark@whitequark.org>
Date: Mon, 19 Aug 2019 19:29:47 +0000
Subject: [PATCH] build.plat: do not prepare fragments twice.

Fixes #169.
---
 nmigen/build/plat.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/nmigen/build/plat.py b/nmigen/build/plat.py
index 6345850..edb3049 100644
--- a/nmigen/build/plat.py
+++ b/nmigen/build/plat.py
@@ -256,8 +256,8 @@ class TemplatedPlatform(Platform):
             assert False
 
         def emit_design(backend):
-            return {"rtlil": rtlil, "verilog": verilog}[backend].convert(fragment, name=name,
-                ports=list(self.iter_ports()), missing_domain=lambda name: None)
+            backend_mod = {"rtlil": rtlil, "verilog": verilog}[backend]
+            return backend_mod.convert_fragment(fragment, name=name)
 
         def emit_commands(format):
             commands = []
-- 
2.30.2