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split muxes synth per type

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This commit is contained in:
Miodrag Milanovic 2019-10-04 09:39:22 +02:00
parent 36af102801
commit a198bcdd4f
2 changed files with 39 additions and 39 deletions
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35
tests/xilinx/mux.v
View file

@ -63,38 +63,3 @@ module mux16 (D, S, 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

43
tests/xilinx/mux.ys
View file

@ -1,10 +1,45 @@
read_verilog mux.v
design -save read
proc
flatten
hierarchy -top mux2
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
cd mux2 # Constrain all select calls below inside the top module
select -assert-count 1 t:LUT3
select -assert-none t:LUT3 %% t:* %D
design -load read
proc
hierarchy -top mux4
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 mux4 # Constrain all select calls below inside the top module
select -assert-count 1 t:LUT6
select -assert-none t:LUT6 %% t:* %D
design -load read
proc
hierarchy -top mux8
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 mux8 # Constrain all select calls below inside the top module
select -assert-count 1 t:LUT3
select -assert-count 2 t:LUT6
select -assert-count 2 t:LUT3
select -assert-count 5 t:LUT6
select -assert-none t:LUT3 t:LUT6 %% t:* %D
design -load read
proc
hierarchy -top mux16
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 mux16 # Constrain all select calls below inside the top module
select -assert-count 5 t:LUT6
select -assert-none t:LUT6 %% t:* %D