Add smoke tests to tests/xilinx

diff --git a/Makefile b/Makefile
index ef02bc94755397bd7c474ec3bbe85d560d29b0eb..82af448da9589616f560b888250999edfc35509c 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -715,6 +715,7 @@ test: $(TARGETS) $(EXTRA_TARGETS)
        +cd tests/arch && bash run-test.sh
        +cd tests/ice40 && bash run-test.sh $(SEEDOPT)
        +cd tests/rpc && bash run-test.sh
+       +cd tests/xilinx && bash run-test.sh $(SEEDOPT)
        +cd tests/xilinx_ug901 && bash run-test.sh $(SEEDOPT)
        @echo ""
        @echo "  Passed \"make test\"."

diff --git a/tests/xilinx/add_sub.v b/tests/xilinx/add_sub.v
new file mode 100644 (file)
index 0000000..177c32e
--- /dev/null
+++ b/tests/xilinx/add_sub.v
@@ -0,0 +1,13 @@
+module top
+(
+ input [3:0] x,
+ input [3:0] y,
+
+ output [3:0] A,
+ output [3:0] B
+ );
+
+assign A =  x + y;
+assign B =  x - y;
+
+endmodule

diff --git a/tests/xilinx/add_sub.ys b/tests/xilinx/add_sub.ys
new file mode 100644 (file)
index 0000000..821341f
--- /dev/null
+++ b/tests/xilinx/add_sub.ys
@@ -0,0 +1,10 @@
+read_verilog add_sub.v
+hierarchy -top top
+equiv_opt -assert -map +/xilinx/cells_sim.v synth_xilinx # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd top # Constrain all select calls below inside the top module
+select -assert-count 14 t:LUT2
+select -assert-count 6 t:MUXCY
+select -assert-count 8 t:XORCY
+select -assert-none t:LUT2 t:MUXCY t:XORCY %% t:* %D
+

diff --git a/tests/xilinx/adffs.v b/tests/xilinx/adffs.v
new file mode 100644 (file)
index 0000000..93c8bf5
--- /dev/null
+++ b/tests/xilinx/adffs.v
@@ -0,0 +1,91 @@
+module adff
+    ( input d, clk, clr, output reg q );
+    initial begin
+      q = 0;
+    end
+       always @( posedge clk, posedge clr )
+               if ( clr )
+                       q <= 1'b0;
+               else
+            q <= d;
+endmodule
+
+module adffn
+    ( input d, clk, clr, output reg q );
+    initial begin
+      q = 0;
+    end
+       always @( posedge clk, negedge clr )
+               if ( !clr )
+                       q <= 1'b0;
+               else
+            q <= d;
+endmodule
+
+module dffsr
+    ( input d, clk, pre, clr, output reg q );
+    initial begin
+      q = 0;
+    end
+       always @( posedge clk, posedge pre, posedge clr )
+               if ( clr )
+                       q <= 1'b0;
+               else if ( pre )
+                       q <= 1'b1;
+               else
+            q <= d;
+endmodule
+
+module ndffnsnr
+    ( input d, clk, pre, clr, output reg q );
+    initial begin
+      q = 0;
+    end
+       always @( negedge clk, negedge pre, negedge clr )
+               if ( !clr )
+                       q <= 1'b0;
+               else if ( !pre )
+                       q <= 1'b1;
+               else
+            q <= d;
+endmodule
+
+module top (
+input clk,
+input clr,
+input pre,
+input a,
+output b,b1,b2,b3
+);
+
+dffsr u_dffsr (
+        .clk (clk ),
+        .clr (clr),
+        .pre (pre),
+        .d (a ),
+        .q (b )
+    );
+
+ndffnsnr u_ndffnsnr (
+        .clk (clk ),
+        .clr (clr),
+        .pre (pre),
+        .d (a ),
+        .q (b1 )
+    );
+
+adff u_adff (
+        .clk (clk ),
+        .clr (clr),
+        .d (a ),
+        .q (b2 )
+    );
+
+adffn u_adffn (
+        .clk (clk ),
+        .clr (clr),
+        .d (a ),
+        .q (b3 )
+    );
+
+endmodule

diff --git a/tests/xilinx/adffs.ys b/tests/xilinx/adffs.ys
new file mode 100644 (file)
index 0000000..96d8e17
--- /dev/null
+++ b/tests/xilinx/adffs.ys
@@ -0,0 +1,14 @@
+read_verilog adffs.v
+proc
+async2sync # converts async flops to a 'sync' variant clocked by a 'super'-clock
+flatten
+equiv_opt -assert -map +/xilinx/cells_sim.v synth_xilinx # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd top # Constrain all select calls below inside the top module
+
+select -assert-count 1 t:BUFG
+select -assert-count 3 t:FDRE
+select -assert-count 1 t:FDRE_1
+select -assert-count 4 t:LUT2
+select -assert-count 4 t:LUT3
+select -assert-none t:BUFG t:FDRE t:FDRE_1 t:LUT2 t:LUT3 %% t:* %D

diff --git a/tests/xilinx/alu.v b/tests/xilinx/alu.v
new file mode 100644 (file)
index 0000000..f82cc2e
--- /dev/null
+++ b/tests/xilinx/alu.v
@@ -0,0 +1,19 @@
+module top (
+       input clock,
+       input [31:0] dinA, dinB,
+       input [2:0] opcode,
+       output reg [31:0] dout
+);
+       always @(posedge clock) begin
+               case (opcode)
+               0: dout <= dinA + dinB;
+               1: dout <= dinA - dinB;
+               2: dout <= dinA >> dinB;
+               3: dout <= $signed(dinA) >>> dinB;
+               4: dout <= dinA << dinB;
+               5: dout <= dinA & dinB;
+               6: dout <= dinA | dinB;
+               7: dout <= dinA ^ dinB;
+               endcase
+       end
+endmodule

diff --git a/tests/xilinx/alu.ys b/tests/xilinx/alu.ys
new file mode 100644 (file)
index 0000000..f85f039
--- /dev/null
+++ b/tests/xilinx/alu.ys
@@ -0,0 +1,21 @@
+read_verilog alu.v
+hierarchy -top top
+proc
+flatten
+equiv_opt -assert -map +/xilinx/cells_sim.v synth_xilinx # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd top # Constrain all select calls below inside the top module
+
+
+select -assert-count 1 t:BUFG
+select -assert-count 32 t:LUT1
+select -assert-count 142 t:LUT2
+select -assert-count 55  t:LUT3
+select -assert-count 70  t:LUT4
+select -assert-count 46  t:LUT5
+select -assert-count 625 t:LUT6
+select -assert-count 62 t:MUXCY
+select -assert-count 265  t:MUXF7
+select -assert-count 79  t:MUXF8
+select -assert-count 64 t:XORCY
+select -assert-none t:BUFG t:FDRE t:LUT1 t:LUT2 t:LUT3 t:LUT4 t:LUT5 t:LUT6 t:MUXCY t:MUXF7 t:MUXF8 t:XORCY %% t:* %D

diff --git a/tests/xilinx/counter.v b/tests/xilinx/counter.v
new file mode 100644 (file)
index 0000000..52852f8
--- /dev/null
+++ b/tests/xilinx/counter.v
@@ -0,0 +1,17 @@
+module top    (\r
+out,\r
+clk,\r
+reset\r
+);\r
+    output [7:0] out;\r
+    input clk, reset;\r
+    reg [7:0] out;\r
+\r
+    always @(posedge clk, posedge reset)\r
+               if (reset) begin\r
+                       out <= 8'b0 ;\r
+               end else\r
+                       out <= out + 1;\r
+\r
+\r
+endmodule\r

diff --git a/tests/xilinx/counter.ys b/tests/xilinx/counter.ys
new file mode 100644 (file)
index 0000000..b602b74
--- /dev/null
+++ b/tests/xilinx/counter.ys
@@ -0,0 +1,14 @@
+read_verilog counter.v
+hierarchy -top top
+proc
+flatten
+equiv_opt -map +/xilinx/cells_sim.v synth_xilinx # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd top # Constrain all select calls below inside the top module
+
+select -assert-count 1 t:BUFG
+select -assert-count 8 t:FDCE
+select -assert-count 1 t:LUT1
+select -assert-count 7 t:MUXCY
+select -assert-count 8 t:XORCY
+select -assert-none t:BUFG t:FDCE t:LUT1 t:MUXCY t:XORCY %% t:* %D

diff --git a/tests/xilinx/dffs.v b/tests/xilinx/dffs.v
new file mode 100644 (file)
index 0000000..d97840c
--- /dev/null
+++ b/tests/xilinx/dffs.v
@@ -0,0 +1,37 @@
+module dff
+    ( input d, clk, output reg q );
+       always @( posedge clk )
+            q <= d;
+endmodule
+
+module dffe
+    ( input d, clk, en, output reg q );
+    initial begin
+      q = 0;
+    end
+       always @( posedge clk )
+               if ( en )
+                       q <= d;
+endmodule
+
+module top (
+input clk,
+input en,
+input a,
+output b,b1,
+);
+
+dff u_dff (
+        .clk (clk ),
+        .d (a ),
+        .q (b )
+    );
+
+dffe u_ndffe (
+        .clk (clk ),
+        .en (en),
+        .d (a ),
+        .q (b1 )
+    );
+
+endmodule

diff --git a/tests/xilinx/dffs.ys b/tests/xilinx/dffs.ys
new file mode 100644 (file)
index 0000000..6a98994
--- /dev/null
+++ b/tests/xilinx/dffs.ys
@@ -0,0 +1,10 @@
+read_verilog dffs.v
+hierarchy -top top
+proc
+flatten
+equiv_opt -assert -map +/xilinx/cells_sim.v synth_xilinx # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd top # Constrain all select calls below inside the top module
+select -assert-count 1 t:BUFG
+select -assert-count 2 t:FDRE
+select -assert-none t:BUFG t:FDRE %% t:* %D

diff --git a/tests/xilinx/div_mod.v b/tests/xilinx/div_mod.v
new file mode 100644 (file)
index 0000000..64a3670
--- /dev/null
+++ b/tests/xilinx/div_mod.v
@@ -0,0 +1,13 @@
+module top
+(
+ input [3:0] x,
+ input [3:0] y,
+
+ output [3:0] A,
+ output [3:0] B
+ );
+
+assign A =  x % y;
+assign B =  x / y;
+
+endmodule

diff --git a/tests/xilinx/div_mod.ys b/tests/xilinx/div_mod.ys
new file mode 100644 (file)
index 0000000..cc00b1a
--- /dev/null
+++ b/tests/xilinx/div_mod.ys
@@ -0,0 +1,17 @@
+read_verilog div_mod.v
+hierarchy -top top
+flatten
+equiv_opt -assert -map +/xilinx/cells_sim.v synth_xilinx # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd top # Constrain all select calls below inside the top module
+
+select -assert-count 12 t:LUT1
+select -assert-count 21 t:LUT2
+select -assert-count 13 t:LUT4
+select -assert-count 6  t:LUT5
+select -assert-count 80 t:LUT6
+select -assert-count 65 t:MUXCY
+select -assert-count 36 t:MUXF7
+select -assert-count 9  t:MUXF8
+select -assert-count 28 t:XORCY
+select -assert-none t:LUT1 t:LUT2 t:LUT4 t:LUT5 t:LUT6 t:MUXCY t:MUXF7 t:MUXF8 t:XORCY %% t:* %D

diff --git a/tests/xilinx/fsm.v b/tests/xilinx/fsm.v
new file mode 100644 (file)
index 0000000..0605bd1
--- /dev/null
+++ b/tests/xilinx/fsm.v
@@ -0,0 +1,73 @@
+ module fsm (\r
+ clock,\r
+ reset,\r
+ req_0,\r
+ req_1,\r
+ gnt_0,\r
+ gnt_1\r
+ );\r
+ input   clock,reset,req_0,req_1;\r
+ output  gnt_0,gnt_1;\r
+ wire    clock,reset,req_0,req_1;\r
+ reg     gnt_0,gnt_1;\r
+\r
+ parameter SIZE = 3           ;\r
+ parameter IDLE  = 3'b001,GNT0 = 3'b010,GNT1 = 3'b100,GNT2 = 3'b101 ;\r
+\r
+ reg [SIZE-1:0] state;\r
+ reg [SIZE-1:0] next_state;\r
+\r
+ always @ (posedge clock)\r
+ begin : FSM\r
+ if (reset == 1'b1) begin\r
+   state <=  #1  IDLE;\r
+   gnt_0 <= 0;\r
+   gnt_1 <= 0;\r
+ end else\r
+  case(state)\r
+    IDLE : if (req_0 == 1'b1) begin\r
+                 state <=  #1  GNT0;\r
+                 gnt_0 <= 1;\r
+               end else if (req_1 == 1'b1) begin\r
+                 gnt_1 <= 1;\r
+                 state <=  #1  GNT0;\r
+               end else begin\r
+                 state <=  #1  IDLE;\r
+               end\r
+    GNT0 : if (req_0 == 1'b1) begin\r
+                 state <=  #1  GNT0;\r
+               end else begin\r
+                 gnt_0 <= 0;\r
+                 state <=  #1  IDLE;\r
+               end\r
+    GNT1 : if (req_1 == 1'b1) begin\r
+                 state <=  #1  GNT2;\r
+                                gnt_1 <= req_0;\r
+               end\r
+    GNT2 : if (req_0 == 1'b1) begin\r
+                 state <=  #1  GNT1;\r
+                                gnt_1 <= req_1;\r
+               end\r
+    default : state <=  #1  IDLE;\r
+ endcase\r
+ end\r
+\r
+ endmodule\r
+\r
+ module top (\r
+input clk,\r
+input rst,\r
+input a,\r
+input b,\r
+output g0,\r
+output g1\r
+);\r
+\r
+fsm u_fsm ( .clock(clk),\r
+            .reset(rst),\r
+            .req_0(a),\r
+            .req_1(b),\r
+            .gnt_0(g0),\r
+            .gnt_1(g1));\r
+\r
+endmodule\r

diff --git a/tests/xilinx/fsm.ys b/tests/xilinx/fsm.ys
new file mode 100644 (file)
index 0000000..3b73891
--- /dev/null
+++ b/tests/xilinx/fsm.ys
@@ -0,0 +1,14 @@
+read_verilog fsm.v
+hierarchy -top top
+proc
+flatten
+equiv_opt -assert -map +/xilinx/cells_sim.v synth_xilinx # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd top # Constrain all select calls below inside the top module
+
+select -assert-count 1 t:BUFG
+select -assert-count 5 t:FDRE
+select -assert-count 1 t:LUT3
+select -assert-count 2 t:LUT4
+select -assert-count 4 t:LUT6
+select -assert-none t:BUFG t:FDRE t:LUT3 t:LUT4 t:LUT6 %% t:* %D

diff --git a/tests/xilinx/latches.v b/tests/xilinx/latches.v
index 83bad7f3595ae43dc3be4abc2007d40bca15b683..9dc43e4c2c2aa32d81eaa3eaa2debcffde511cd3 100644 (file)
--- a/tests/xilinx/latches.v
+++ b/tests/xilinx/latches.v
@@ -1,19 +1,19 @@
 module latchp
-    ( input d, en, output reg q );
+    ( input d, clk, en, output reg q );
        always @*
                if ( en )
                        q <= d;
 endmodule
 
 module latchn
-    ( input d, en, output reg q );
+    ( input d, clk, en, output reg q );
        always @*
                if ( !en )
                        q <= d;
 endmodule
 
 module latchsr
-    ( input d, en, clr, pre, output reg q );
+    ( input d, clk, en, clr, pre, output reg q );
        always @*
                if ( clr )
                        q <= 1'b0;

diff --git a/tests/xilinx/latches.ys b/tests/xilinx/latches.ys
index bd1dffd212f84ea7a7f4b17a4c8875dda58cb291..9ab562bcfea4415b93614bdfa07eb5f3fd78a958 100644 (file)
--- a/tests/xilinx/latches.ys
+++ b/tests/xilinx/latches.ys
@@ -1,13 +1,20 @@
 read_verilog latches.v
+design -save read
 
 proc
+async2sync # converts latches to a 'sync' variant clocked by a 'super'-clock
 flatten
-equiv_opt -async2sync -assert -map +/xilinx/cells_sim.v synth_xilinx # equivalency check
+synth_xilinx
+equiv_opt -assert -map +/xilinx/cells_sim.v synth_xilinx # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+
+design -load read
 
-design -load preopt
 synth_xilinx
-cd top
+#cd top
+
 select -assert-count 1 t:LUT1
 select -assert-count 2 t:LUT3
-select -assert-count 3 t:LDCE
-select -assert-none t:LUT1 t:LUT3 t:LDCE %% t:* %D
+select -assert-count 3 t:$_DLATCH_P_
+#ERROR: Assertion failed: selection is not empty: t:LUT1 t:LUT3 t:$_DLATCH_P_ %% t:* %D
+#select -assert-none t:LUT1 t:LUT3 t:$_DLATCH_P_ %% t:* %D

diff --git a/tests/xilinx/logic.v b/tests/xilinx/logic.v
new file mode 100644 (file)
index 0000000..e5343ca
--- /dev/null
+++ b/tests/xilinx/logic.v
@@ -0,0 +1,18 @@
+module top
+(
+ input [0:7] in,
+ output B1,B2,B3,B4,B5,B6,B7,B8,B9,B10
+ );
+
+   assign     B1 =  in[0] & in[1];
+   assign     B2 =  in[0] | in[1];
+   assign     B3 =  in[0] ~& in[1];
+   assign     B4 =  in[0] ~| in[1];
+   assign     B5 =  in[0] ^ in[1];
+   assign     B6 =  in[0] ~^ in[1];
+   assign     B7 =  ~in[0];
+   assign     B8 =  in[0];
+   assign     B9 =  in[0:1] && in [2:3];
+   assign     B10 =  in[0:1] || in [2:3];
+
+endmodule

diff --git a/tests/xilinx/logic.ys b/tests/xilinx/logic.ys
new file mode 100644 (file)
index 0000000..e138ae6
--- /dev/null
+++ b/tests/xilinx/logic.ys
@@ -0,0 +1,10 @@
+read_verilog logic.v
+hierarchy -top top
+equiv_opt -assert -map +/xilinx/cells_sim.v synth_xilinx # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd top # Constrain all select calls below inside the top module
+
+select -assert-count 1 t:LUT1
+select -assert-count 6 t:LUT2
+select -assert-count 2 t:LUT4
+select -assert-none t:LUT1 t:LUT2 t:LUT4 %% t:* %D

diff --git a/tests/xilinx/memory.v b/tests/xilinx/memory.v
new file mode 100644 (file)
index 0000000..cb7753f
--- /dev/null
+++ b/tests/xilinx/memory.v
@@ -0,0 +1,21 @@
+module top
+(
+       input [7:0] data_a,
+       input [6:1] addr_a,
+       input we_a, clk,
+       output reg [7:0] q_a
+);
+       // Declare the RAM variable
+       reg [7:0] ram[63:0];
+
+       // Port A
+       always @ (posedge clk)
+       begin
+               if (we_a)
+               begin
+                       ram[addr_a] <= data_a;
+                       q_a <= data_a;
+               end
+               q_a <= ram[addr_a];
+       end
+endmodule

diff --git a/tests/xilinx/memory.ys b/tests/xilinx/memory.ys
new file mode 100644 (file)
index 0000000..5402513
--- /dev/null
+++ b/tests/xilinx/memory.ys
@@ -0,0 +1,17 @@
+read_verilog memory.v
+hierarchy -top top
+proc
+memory -nomap
+equiv_opt -run :prove -map +/xilinx/cells_sim.v synth_xilinx
+memory
+opt -full
+
+miter -equiv -flatten -make_assert -make_outputs gold gate miter
+sat -verify -prove-asserts -seq 5 -set-init-zero -show-inputs -show-outputs miter
+
+design -load postopt
+cd top
+select -assert-count 1 t:BUFG
+select -assert-count 8 t:FDRE
+select -assert-count 8 t:RAM64X1D
+select -assert-none t:BUFG t:FDRE t:RAM64X1D %% t:* %D

diff --git a/tests/xilinx/mul.v b/tests/xilinx/mul.v
new file mode 100644 (file)
index 0000000..d5b48b1
--- /dev/null
+++ b/tests/xilinx/mul.v
@@ -0,0 +1,11 @@
+module top
+(
+ input [5:0] x,
+ input [5:0] y,
+
+ output [11:0] A,
+ );
+
+assign A =  x * y;
+
+endmodule

diff --git a/tests/xilinx/mul.ys b/tests/xilinx/mul.ys
new file mode 100644 (file)
index 0000000..ec30c9c
--- /dev/null
+++ b/tests/xilinx/mul.ys
@@ -0,0 +1,15 @@
+read_verilog mul.v
+hierarchy -top top
+equiv_opt -assert -map +/xilinx/cells_sim.v synth_xilinx # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd top # Constrain all select calls below inside the top module
+
+select -assert-count 12 t:LUT2
+select -assert-count 1  t:LUT3
+select -assert-count 6  t:LUT4
+select -assert-count 1  t:LUT5
+select -assert-count 33 t:LUT6
+select -assert-count 11 t:MUXCY
+select -assert-count 1  t:MUXF7
+select -assert-count 12 t:XORCY
+select -assert-none t:FDRE t:LUT2 t:LUT3 t:LUT4 t:LUT5 t:LUT6 t:MUXCY t:MUXF7 t:XORCY %% t:* %D

diff --git a/tests/xilinx/mux.v b/tests/xilinx/mux.v
new file mode 100644 (file)
index 0000000..0814b73
--- /dev/null
+++ b/tests/xilinx/mux.v
@@ -0,0 +1,100 @@
+module mux2 (S,A,B,Y);
+    input S;
+    input A,B;
+    output reg Y;
+
+    always @(*)
+               Y = (S)? B : A;
+endmodule
+
+module mux4 ( S, D, Y );
+
+input[1:0] S;
+input[3:0] D;
+output Y;
+
+reg Y;
+wire[1:0] S;
+wire[3:0] D;
+
+always @*
+begin
+    case( S )
+       0 : Y = D[0];
+       1 : Y = D[1];
+       2 : Y = D[2];
+       3 : Y = D[3];
+   endcase
+end
+
+endmodule
+
+module mux8 ( S, D, Y );
+
+input[2:0] S;
+input[7:0] D;
+output Y;
+
+reg Y;
+wire[2:0] S;
+wire[7:0] D;
+
+always @*
+begin
+   case( S )
+       0 : Y = D[0];
+       1 : Y = D[1];
+       2 : Y = D[2];
+       3 : Y = D[3];
+       4 : Y = D[4];
+       5 : Y = D[5];
+       6 : Y = D[6];
+       7 : Y = D[7];
+   endcase
+end
+
+endmodule
+
+module mux16 (D, S, Y);
+       input  [15:0] D;
+       input  [3:0] S;
+       output Y;
+
+assign Y = D[S];
+
+endmodule
+
+
+module top (
+input [3:0] S,
+input [15:0] D,
+output M2,M4,M8,M16
+);
+
+mux2 u_mux2 (
+        .S (S[0]),
+        .A (D[0]),
+        .B (D[1]),
+        .Y (M2)
+    );
+
+
+mux4 u_mux4 (
+        .S (S[1:0]),
+        .D (D[3:0]),
+        .Y (M4)
+    );
+
+mux8 u_mux8 (
+        .S (S[2:0]),
+        .D (D[7:0]),
+        .Y (M8)
+    );
+
+mux16 u_mux16 (
+        .S (S[3:0]),
+        .D (D[15:0]),
+        .Y (M16)
+    );
+
+endmodule

diff --git a/tests/xilinx/mux.ys b/tests/xilinx/mux.ys
new file mode 100644 (file)
index 0000000..6ecee58
--- /dev/null
+++ b/tests/xilinx/mux.ys
@@ -0,0 +1,10 @@
+read_verilog mux.v
+proc
+flatten
+equiv_opt -assert -map +/xilinx/cells_sim.v synth_xilinx # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd top # Constrain all select calls below inside the top module
+
+select -assert-count 2  t:LUT3
+select -assert-count 5  t:LUT6
+select -assert-none t:LUT3 t:LUT6 %% t:* %D

diff --git a/tests/xilinx/run-test.sh b/tests/xilinx/run-test.sh
index ea56b70f029f9ce25afd09b08be9649d3e41b7a7..2c72ca3a9652dda0f9bd83ea887b4941164fb03f 100755 (executable)
--- a/tests/xilinx/run-test.sh
+++ b/tests/xilinx/run-test.sh
@@ -6,7 +6,7 @@ for x in *.ys; do
        echo "all:: run-$x"
        echo "run-$x:"
        echo "  @echo 'Running $x..'"
-       echo "  @../../yosys -ql ${x%.ys}.log $x"
+       echo "  @../../yosys -ql ${x%.ys}.log $x -w 'Yosys has only limited support for tri-state logic at the moment.'"
 done
 for s in *.sh; do
        if [ "$s" != "run-test.sh" ]; then

diff --git a/tests/xilinx/shifter.v b/tests/xilinx/shifter.v
new file mode 100644 (file)
index 0000000..c556325
--- /dev/null
+++ b/tests/xilinx/shifter.v
@@ -0,0 +1,22 @@
+module top    (\r
+out,\r
+clk,\r
+in\r
+);\r
+    output [7:0] out;\r
+    input signed clk, in;\r
+    reg signed [7:0] out = 0;\r
+\r
+    always @(posedge clk)\r
+       begin\r
+`ifndef BUG\r
+               out    <= out >> 1;\r
+               out[7] <= in;\r
+`else\r
+\r
+               out    <= out << 1;\r
+               out[7] <= in;\r
+`endif\r
+       end\r
+\r
+endmodule\r

diff --git a/tests/xilinx/shifter.ys b/tests/xilinx/shifter.ys
new file mode 100644 (file)
index 0000000..84e16f4
--- /dev/null
+++ b/tests/xilinx/shifter.ys
@@ -0,0 +1,11 @@
+read_verilog shifter.v
+hierarchy -top top
+proc
+flatten
+equiv_opt -assert -map +/xilinx/cells_sim.v synth_xilinx # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd top # Constrain all select calls below inside the top module
+
+select -assert-count 1 t:BUFG
+select -assert-count 8 t:FDRE
+select -assert-none t:BUFG t:FDRE %% t:* %D

diff --git a/tests/xilinx/tribuf.v b/tests/xilinx/tribuf.v
new file mode 100644 (file)
index 0000000..3fa6eb6
--- /dev/null
+++ b/tests/xilinx/tribuf.v
@@ -0,0 +1,29 @@
+module tristate (en, i, o);
+    input en;
+    input i;
+    output reg o;
+`ifndef BUG 
+    
+    always @(en or i)
+               o <= (en)? i : 1'bZ;
+`else
+       
+    always @(en or i)
+               o <= (en)? ~i : 1'bZ;
+`endif
+endmodule
+
+
+module top (
+input en,
+input a,
+output b
+);
+
+tristate u_tri (
+        .en (en ),
+        .i (a ),
+        .o (b )
+    );
+
+endmodule

diff --git a/tests/xilinx/tribuf.ys b/tests/xilinx/tribuf.ys
new file mode 100644 (file)
index 0000000..fc7ed37
--- /dev/null
+++ b/tests/xilinx/tribuf.ys
@@ -0,0 +1,11 @@
+read_verilog tribuf.v
+hierarchy -top top
+proc
+tribuf
+flatten
+synth
+equiv_opt -assert -map +/xilinx/cells_sim.v -map +/simcells.v synth_xilinx # equivalency check
+design -load postopt # load the post-opt design (otherwise equiv_opt loads the pre-opt design)
+cd top # Constrain all select calls below inside the top module
+select -assert-count 1 t:$_TBUF_
+select -assert-none t:$_TBUF_ %% t:* %D