From 7ec740b7ad4ee4bc02e2564671e0153cdd08152f Mon Sep 17 00:00:00 2001
From: whitequark <whitequark@whitequark.org>
Date: Fri, 7 Dec 2018 17:13:52 +0000
Subject: opt_lut: leave intact LUTs with cascade feeding module outputs.

---
 tests/opt/opt_lut_port.il | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 tests/opt/opt_lut_port.il

(limited to 'tests/opt/opt_lut_port.il')

diff --git a/tests/opt/opt_lut_port.il b/tests/opt/opt_lut_port.il
new file mode 100644
index 000000000..7eb71890f
--- /dev/null
+++ b/tests/opt/opt_lut_port.il
@@ -0,0 +1,18 @@
+module $1
+  wire width 4 input 2 \_0_
+  wire output 4 \_1_
+  wire input 3 \_2_
+  wire output 1 \o
+  cell $lut \_3_
+    parameter \LUT 16'0011000000000011
+    parameter \WIDTH 4
+    connect \A { \_0_ [3] \o 2'00 }
+    connect \Y \_1_
+  end
+  cell $lut \_4_
+    parameter \LUT 4'0001
+    parameter \WIDTH 4
+    connect \A { 3'000 \_2_ }
+    connect \Y \o
+  end
+end
-- 
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