From 1da12c5071a738504d22e68d66cab7c5c5afb07e Mon Sep 17 00:00:00 2001
From: Eddie Hung <eddie@fpgeh.com>
Date: Fri, 7 Jun 2019 12:12:11 -0700
Subject: [PATCH] Add @cliffordwolf freduce testcase
---
tests/various/muxpack.v | 13 +++++++++++++
tests/various/muxpack.ys | 17 +++++++++++++++++
2 files changed, 30 insertions(+)
diff --git a/tests/various/muxpack.v b/tests/various/muxpack.v
index f3c25db8d..d45ce4045 100644
--- a/tests/various/muxpack.v
+++ b/tests/various/muxpack.v
@@ -166,3 +166,16 @@ module cliffordwolf_nonexclusive_select (
if (z) o = d;
end
endmodule
+
+module cliffordwolf_freduce (
+ input wire [1:0] s,
+ input wire a, b, c, d,
+ output reg [3:0] o
+);
+ always @* begin
+ o = {4{a}};
+ if (s == 0) o = {3{b}};
+ if (s == 1) o = {2{c}};
+ if (s == 2) o = d;
+ end
+endmodule
diff --git a/tests/various/muxpack.ys b/tests/various/muxpack.ys
index 7c3fe5070..afdacdf30 100644
--- a/tests/various/muxpack.ys
+++ b/tests/various/muxpack.ys
@@ -178,3 +178,20 @@ design -import gold -as gold
design -import gate -as gate
miter -equiv -flatten -make_assert -make_outputs gold gate miter
sat -verify -prove-asserts -show-ports miter
+
+design -load read
+hierarchy -top cliffordwolf_freduce
+prep
+design -save gold
+proc; opt; freduce; opt
+write_verilog -noexpr -norename
+muxpack
+opt
+stat
+select -assert-count 0 t:$mux
+select -assert-count 1 t:$pmux
+design -stash gate
+design -import gold -as gold
+design -import gate -as gate
+miter -equiv -flatten -make_assert -make_outputs gold gate miter
+sat -verify -prove-asserts -show-ports miter