diff options
| -rw-r--r-- | passes/sat/clk2fflogic.cc | 7 | ||||
| -rw-r--r-- | tests/simple_abc9/.gitignore | 3 | ||||
| -rw-r--r-- | tests/various/async.sh | 11 | ||||
| -rw-r--r-- | tests/various/async.v | 108 | ||||
| -rwxr-xr-x | tests/various/run-test.sh | 14 |
5 files changed, 135 insertions, 8 deletions
diff --git a/passes/sat/clk2fflogic.cc b/passes/sat/clk2fflogic.cc index 49ec795d3..4bb4aa047 100644 --- a/passes/sat/clk2fflogic.cc +++ b/passes/sat/clk2fflogic.cc @@ -253,6 +253,13 @@ struct Clk2fflogicPass : public Pass { SigSpec qval = module->Mux(NEW_ID, past_q, past_d, clock_edge); Const rstval = cell->parameters["\\ARST_VALUE"]; + Wire *past_arst = module->addWire(NEW_ID); + module->addFf(NEW_ID, arst, past_arst); + if (cell->parameters["\\ARST_POLARITY"].as_bool()) + arst = module->LogicOr(NEW_ID, arst, past_arst); + else + arst = module->LogicAnd(NEW_ID, arst, past_arst); + if (cell->parameters["\\ARST_POLARITY"].as_bool()) module->addMux(NEW_ID, qval, rstval, arst, sig_q); else diff --git a/tests/simple_abc9/.gitignore b/tests/simple_abc9/.gitignore new file mode 100644 index 000000000..598951333 --- /dev/null +++ b/tests/simple_abc9/.gitignore @@ -0,0 +1,3 @@ +*.v +*.log +*.out diff --git a/tests/various/async.sh b/tests/various/async.sh new file mode 100644 index 000000000..7c41d6d94 --- /dev/null +++ b/tests/various/async.sh @@ -0,0 +1,11 @@ +#!/bin/bash +set -ex +../../yosys -q -o async_syn.v -p 'synth; rename uut syn' async.v +../../yosys -q -o async_prp.v -p 'prep; rename uut prp' async.v +../../yosys -q -o async_a2s.v -p 'prep; async2sync; rename uut a2s' async.v +../../yosys -q -o async_ffl.v -p 'prep; clk2fflogic; rename uut ffl' async.v +iverilog -o async_sim -DTESTBENCH async.v async_???.v +vvp -N async_sim > async.out +tail async.out +grep PASS async.out +rm -f async_???.v async_sim async.out async.vcd diff --git a/tests/various/async.v b/tests/various/async.v new file mode 100644 index 000000000..c27e30c4b --- /dev/null +++ b/tests/various/async.v @@ -0,0 +1,108 @@ +`define MAXQ 2 +module uut ( + input clk, + input d, r, e, + output [`MAXQ:0] q +); + reg q0; + always @(posedge clk) begin + if (r) + q0 <= 0; + else if (e) + q0 <= d; + end + + reg q1; + always @(posedge clk, posedge r) begin + if (r) + q1 <= 0; + else if (e) + q1 <= d; + end + + reg q2; + always @(posedge clk, negedge r) begin + if (!r) + q2 <= 0; + else if (!e) + q2 <= d; + end + + assign q = {q2, q1, q0}; +endmodule + +`ifdef TESTBENCH +module \$ff #( + parameter integer WIDTH = 1 +) ( + input [WIDTH-1:0] D, + output reg [WIDTH-1:0] Q +); + wire sysclk = testbench.sysclk; + always @(posedge sysclk) + Q <= D; +endmodule + +module testbench; + reg sysclk; + always #5 sysclk = (sysclk === 1'b0); + + reg clk; + always @(posedge sysclk) clk = (clk === 1'b0); + + reg d, r, e; + + wire [`MAXQ:0] q_uut; + uut uut (.clk(clk), .d(d), .r(r), .e(e), .q(q_uut)); + + wire [`MAXQ:0] q_syn; + syn syn (.clk(clk), .d(d), .r(r), .e(e), .q(q_syn)); + + wire [`MAXQ:0] q_prp; + prp prp (.clk(clk), .d(d), .r(r), .e(e), .q(q_prp)); + + wire [`MAXQ:0] q_a2s; + a2s a2s (.clk(clk), .d(d), .r(r), .e(e), .q(q_a2s)); + + wire [`MAXQ:0] q_ffl; + ffl ffl (.clk(clk), .d(d), .r(r), .e(e), .q(q_ffl)); + + task printq; + reg [5*8-1:0] msg; + begin + msg = "OK"; + if (q_uut !== q_syn) msg = "SYN"; + if (q_uut !== q_prp) msg = "PRP"; + if (q_uut !== q_a2s) msg = "A2S"; + if (q_uut !== q_ffl) msg = "FFL"; + $display("%6t %b %b %b %b %b %s", $time, q_uut, q_syn, q_prp, q_a2s, q_ffl, msg); + if (msg != "OK") $finish; + end + endtask + + initial if(0) begin + $dumpfile("async.vcd"); + $dumpvars(0, testbench); + end + + initial begin + @(posedge clk); + d <= 0; + r <= 0; + e <= 0; + @(posedge clk); + e <= 1; + @(posedge clk); + e <= 0; + repeat (10000) begin + @(posedge clk); + printq; + d <= $random; + r <= $random; + e <= $random; + end + $display("PASS"); + $finish; + end +endmodule +`endif diff --git a/tests/various/run-test.sh b/tests/various/run-test.sh index d49553ede..92b905765 100755 --- a/tests/various/run-test.sh +++ b/tests/various/run-test.sh @@ -4,11 +4,9 @@ for x in *.ys; do echo "Running $x.." ../../yosys -ql ${x%.ys}.log $x done -# Run any .sh files in this directory (with the exception of the file - run-test.sh -shell_tests=$(echo *.sh | sed -e 's/run-test.sh//') -if [ "$shell_tests" ]; then - for s in $shell_tests; do - echo "Running $s.." - bash $s - done -fi +for s in *.sh; do + if [ "$s" != "run-test.sh" ]; then + echo "Running $s.." + bash $s + fi +done |