4 files changed, 124 insertions, 2 deletions
diff --git a/tests/arch/gowin/mux.ys b/tests/arch/gowin/mux.ys
index 4990be421..afad29a89 100644
--- a/tests/arch/gowin/mux.ys
+++ b/tests/arch/gowin/mux.ys
@@ -45,6 +45,5 @@ design -load postopt # load the post-opt design (otherwise equiv_opt loads the p
 cd mux16 # Constrain all select calls below inside the top module
 select -assert-count 20 t:IBUF
 select -assert-count 1 t:OBUF
-show
 
 select -assert-none t:LUT4 t:MUX2_LUT6 t:MUX2_LUT5 t:MUX2_LUT6 t:MUX2_LUT7 t:MUX2_LUT8 t:IBUF t:OBUF %% t:* %D
diff --git a/tests/simple_abc9/abc9.v b/tests/simple_abc9/abc9.v
index 65eb01338..99075d319 100644
--- a/tests/simple_abc9/abc9.v
+++ b/tests/simple_abc9/abc9.v
@@ -268,7 +268,7 @@ assign o = { 1'b1, 1'bx };
 assign p = { 1'b1, 1'bx, 1'b0 };
 endmodule
 
-module abc9_test029(input clk1, clk2, input d, output reg q1, q2);
+module abc9_test029(input clk1, clk2, d, output reg q1, q2);
 always @(posedge clk1) q1 <= d;
 always @(negedge clk2) q2 <= q1;
 endmodule
@@ -284,3 +284,13 @@ always @(negedge clk or posedge r)
     if (r) q <= 1'b1;
     else q <= d;
 endmodule
+
+module abc9_test033(input clk, d, output reg q1, q2);
+always @(posedge clk) q1 <= d;
+always @(posedge clk) q2 <= q1;
+endmodule
+
+module abc9_test034(input clk, d, output reg [1:0] q);
+always @(posedge clk) q[0] <= d;
+always @(negedge clk) q[1] <= q[0];
+endmodule
diff --git a/tests/various/submod.ys b/tests/various/submod.ys
new file mode 100644
index 000000000..7c6f555ac
--- /dev/null
+++ b/tests/various/submod.ys
@@ -0,0 +1,50 @@
+read_verilog <<EOT
+module top(input a, output [1:0] b);
+wire c;
+(* submod="bar" *) sub s1(a, c);
+assign b[0] = c;
+endmodule
+
+module sub(input a, output c);
+assign c = a;
+endmodule
+EOT
+
+hierarchy -top top
+proc
+design -save gold
+
+submod
+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
+
+
+design -reset
+read_verilog <<EOT
+module top(input a, output [1:0] b);
+(* submod="bar" *) sub s1(a, b[1]);
+assign b[0] = 1'b0;
+endmodule
+
+module sub(input a, output c);
+assign c = a;
+endmodule
+EOT
+
+hierarchy -top top
+proc
+design -save gold
+
+submod
+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
diff --git a/tests/various/svalways.sh b/tests/various/svalways.sh
new file mode 100755
index 000000000..2cc09f801
--- /dev/null
+++ b/tests/various/svalways.sh
@@ -0,0 +1,63 @@
+#!/bin/bash
+
+trap 'echo "ERROR in svalways.sh" >&2; exit 1' ERR
+
+# Good case
+../../yosys -f "verilog -sv" -qp proc - <<EOT
+module top(input clk, en, d, output reg p, q, r);
+
+always_ff @(posedge clk)
+	p <= d;
+
+always_comb
+	q = ~d;
+
+always_latch
+	if (en) r = d;
+
+endmodule
+EOT
+
+# Incorrect always_comb syntax
+((../../yosys -f "verilog -sv" -qp proc -|| true) <<EOT
+module top(input d, output reg q);
+
+always_comb @(d)
+	q = ~d;
+
+endmodule
+EOT
+) 2>&1 | grep -F "<stdin>:3: ERROR: syntax error, unexpected '@'" > /dev/null
+
+# Incorrect use of always_comb
+((../../yosys -f "verilog -sv" -qp proc -|| true) <<EOT
+module top(input en, d, output reg q);
+
+always_comb
+	if (en) q = d;
+
+endmodule
+EOT
+) 2>&1 | grep -F "ERROR: Latch inferred for signal \`\\top.\\q' from always_comb process" > /dev/null
+
+# Incorrect use of always_latch
+((../../yosys -f "verilog -sv" -qp proc -|| true) <<EOT
+module top(input en, d, output reg q);
+
+always_latch
+	q = !d;
+
+endmodule
+EOT
+) 2>&1 | grep -F "ERROR: No latch inferred for signal \`\\top.\\q' from always_latch process" > /dev/null
+
+# Incorrect use of always_ff
+((../../yosys -f "verilog -sv" -qp proc -|| true) <<EOT
+module top(input en, d, output reg q);
+
+always_ff @(*)
+	q = !d;
+
+endmodule
+EOT
+) 2>&1 | grep -F "ERROR: Found non edge/level sensitive event in always_ff process" > /dev/null