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Added $anyconst support to yosys-smtbmc

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This commit is contained in:
Clifford Wolf 2016-08-30 19:27:42 +02:00
parent 6f41e5277d
commit aa25a4cec6
7 changed files with 58 additions and 2 deletions
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3
examples/smtbmc/.gitignore vendored
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@ -13,3 +13,6 @@ demo3.yslog
demo4.smt2
demo4.vcd
demo4.yslog
demo5.smt2
demo5.vcd
demo5.yslog

9
examples/smtbmc/Makefile
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@ -16,6 +16,9 @@ demo3: demo3.smt2
demo4: demo4.smt2
yosys-smtbmc -s yices --dump-vcd demo4.vcd --smtc demo4.smtc demo4.smt2
demo5: demo5.smt2
yosys-smtbmc -g -t 50 --dump-vcd demo5.vcd demo5.smt2
demo1.smt2: demo1.v
yosys -ql demo1.yslog -p 'read_verilog -formal demo1.v; prep -top demo1 -nordff; write_smt2 -wires demo1.smt2'
@ -28,11 +31,15 @@ demo3.smt2: demo3.v
demo4.smt2: demo4.v
yosys -ql demo4.yslog -p 'read_verilog -formal demo4.v; prep -top demo4 -nordff; write_smt2 -wires demo4.smt2'
demo5.smt2: demo5.v
yosys -ql demo5.yslog -p 'read_verilog -formal demo5.v; prep -top demo5 -nordff; write_smt2 -wires demo5.smt2'
clean:
rm -f demo1.yslog demo1.smt2 demo1.vcd
rm -f demo2.yslog demo2.smt2 demo2.vcd demo2.smtc demo2_tb.v demo2_tb demo2_tb.vcd
rm -f demo3.yslog demo3.smt2 demo3.vcd
rm -f demo4.yslog demo4.smt2 demo4.vcd
rm -f demo5.yslog demo5.smt2 demo5.vcd
.PHONY: demo1 demo2 demo3 demo4 clean
.PHONY: demo1 demo2 demo3 demo4 demo5 clean

18
examples/smtbmc/demo5.v Normal file
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@ -0,0 +1,18 @@
// Demo for $anyconst
module demo5 (input clk);
wire [7:0] step_size = $anyconst;
reg [7:0] state = 0, count = 0;
reg [31:0] hash = 0;
always @(posedge clk) begin
count <= count + 1;
hash <= ((hash << 5) + hash) ^ state;
state <= state + step_size;
end
always @* begin
if (count == 42)
assert(hash == 32'h A18FAC0A);
end
endmodule