tests/test.sh exit code (0 → resolved); the classification below is post-hoc and cannot change it.rg --files
Chunk ID: f35cd0 Wall time: 0.0000 seconds Process exited with code 0 Original token count: 20 Output: fold_core/rtl/fold_top.sv fold_core/rtl/fold_stage.sv fold_core/rtl/fold_pkg.sv
git status --short
Chunk ID: dd06cc Wall time: 0.0000 seconds Process exited with code 127 Original token count: 11 Output: /bin/bash: line 1: git: command not found
sed -n '1,220p' fold_core/rtl/fold_stage.sv
Chunk ID: 67bfc3
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 706
Output:
//==============================================================================
// fold_stage.sv
//
// Enable-gated streaming fold stage.
//
// ---------------------------------------------------------------------------
// >>> IMPLEMENTATION REQUIRED <<<
//
// The module ports, parameters and the state registers are provided. The
// datapath, the phase/priming control and the outputs are left as a TODO and
// currently drive constant zeros, so the stage produces no useful stream and
// the verifier FAILS.
//
// Implement the behaviour described in instruction.md. Do NOT change the
// module name, the port list, or the parameter list.
//
// iverilog 11 note: a bit/part-select of an EXPRESSION (a sum, a shift, a
// function-call result) is a syntax error under `iverilog -g2012`. Index only
// named signals, and do any bit work that needs an intermediate value inside a
// `function automatic` using named locals.
// ---------------------------------------------------------------------------
//==============================================================================
`timescale 1ns/1ps
module fold_stage #(
parameter DW = 12,
parameter DEPTH = 4,
parameter NPH = 8
) (
input logic clk,
input logic rst_n,
input logic en,
input logic signed [DW-1:0] din,
output logic signed [DW-1:0] dout,
output logic out_valid
);
// ---------------------------------------------------------------------------
// State registers (provided). The head of the feedback line is line[DEPTH-1].
// ---------------------------------------------------------------------------
logic signed [DW-1:0] line [0:DEPTH-1];
logic [2:0] phase;
logic [2:0] prime;
integer k;
// ===========================================================================
// TODO: IMPLEMENT THE STAGE.
// * advance every register exactly one step on a rising clk edge with en==1,
// and hold all of it when en==0;
// * asynchronous active-low reset clears state and outputs;
// * drive dout / out_valid per the contract in instruction.md.
//
// The placeholder below keeps the module compilable but INCORRECT.
// ===========================================================================
always_ff @(posedge clk or negedge rst_n) begin
if (!rst_n) begin
for (k = 0; k < DEPTH; k = k + 1) line[k] <= '0;
phase <= 3'd0;
prime <= 3'd0;
end else begin
// TODO: replace with the real datapath + control.
phase <= phase;
prime <= prime;
end
end
// TODO: replace these placeholder outputs with the real ones.
assign dout = '0;
assign out_valid = 1'b0;
endmodule : fold_stage
sed -n '1,220p' fold_core/rtl/fold_top.sv
Chunk ID: 8b4fe4
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 292
Output:
//==============================================================================
// fold_top.sv
//
// Thin integration wrapper. The verification environment drives this wrapper so
// that the instantiation wiring is exercised alongside the stage itself. It
// instantiates fold_stage with the project-default geometry from fold_pkg.
//
// DO NOT change this file.
//==============================================================================
`timescale 1ns/1ps
`include "fold_pkg.sv"
module fold_top (
input logic clk,
input logic rst_n,
input logic en,
input logic signed [fold_pkg::DW-1:0] din,
output logic signed [fold_pkg::DW-1:0] dout,
output logic out_valid
);
// Bare instantiation: the stage carries its own default geometry, so a
// submission needs no parameter override to elaborate correctly.
fold_stage u_fold_stage (
.clk (clk),
.rst_n (rst_n),
.en (en),
.din (din),
.dout (dout),
.out_valid (out_valid)
);
endmodule : fold_top
sed -n '1,220p' fold_core/rtl/fold_pkg.sv
Chunk ID: ab0260 Wall time: 0.0000 seconds Process exited with code 0 Original token count: 227 Output: //============================================================================== // fold_pkg.sv // // Shared geometry for the enable-gated streaming fold stage. The block carries a // DEPTH-deep signed feedback line, an eight-step phase counter, and a small // priming counter. Parameters are declared without an explicit data type for // broad simulator compatibility (Icarus Verilog 11); they default to integer // constants, which is sufficient here. // // DO NOT change this file. //============================================================================== `ifndef FOLD_PKG_SV `define FOLD_PKG_SV package fold_pkg; localparam DW = 12; // sample word width (signed two's complement) localparam DEPTH = 4; // feedback line depth (= load/combine window length) localparam NPH = 8; // phase counter span: 0..3 load window, 4..7 combine endpackage : fold_pkg `endif // FOLD_PKG_SV
*** Begin Patch
*** Update File: /work/fold_core/rtl/fold_stage.sv
@@
logic signed [DW-1:0] line [0:DEPTH-1];
logic [2:0] phase;
logic [2:0] prime;
integer k;
- // ===========================================================================
- // TODO: IMPLEMENT THE STAGE.
- // * advance every register exactly one step on a rising clk edge with en==1,
- // and hold all of it when en==0;
- // * asynchronous active-low reset clears state and outputs;
- // * drive dout / out_valid per the contract in instruction.md.
- //
- // The placeholder below keeps the module compilable but INCORRECT.
- // ===========================================================================
+ localparam logic signed [DW:0] SAT_MAX_EXT = {2'b00, {(DW-1){1'b1}}};
+ localparam logic signed [DW:0] SAT_MIN_EXT = {2'b11, {(DW-1){1'b0}}};
+ localparam logic signed [DW-1:0] SAT_MAX = {1'b0, {(DW-1){1'b1}}};
+ localparam logic signed [DW-1:0] SAT_MIN = {1'b1, {(DW-1){1'b0}}};
+
+ function automatic logic signed [DW-1:0] rounded_half_up;
+ input logic signed [DW-1:0] a;
+ input logic signed [DW-1:0] b;
+ logic signed [DW:0] sum;
+ logic signed [DW:0] shifted;
+ begin
+ sum = $signed(a) + $signed(b) + 1;
+ shifted = sum >>> 1;
+ rounded_half_up = shifted[DW-1:0];
+ end
+ endfunction
+
+ function automatic logic signed [DW-1:0] saturated_sub;
+ input logic signed [DW-1:0] a;
+ input logic signed [DW-1:0] b;
+ logic signed [DW:0] diff;
+ begin
+ diff = $signed(a) - $signed(b);
+
+ if (diff > SAT_MAX_EXT) begin
+ saturated_sub = SAT_MAX;
+ end else if (diff < SAT_MIN_EXT) begin
+ saturated_sub = SAT_MIN;
+ end else begin
+ saturated_sub = diff[DW-1:0];
+ end
+ end
+ endfunction
+
always_ff @(posedge clk or negedge rst_n) begin
if (!rst_n) begin
for (k = 0; k < DEPTH; k = k + 1) line[k] <= '0;
phase <= 3'd0;
prime <= 3'd0;
+ dout <= '0;
+ out_valid <= 1'b0;
+ end else if (en) begin
+ for (k = DEPTH-1; k > 0; k = k - 1) line[k] <= line[k-1];
+
+ if (phase < DEPTH[2:0]) begin
+ dout <= line[DEPTH-1];
+ line[0] <= din;
+ end else begin
+ dout <= rounded_half_up(line[DEPTH-1], din);
+ line[0] <= saturated_sub(line[DEPTH-1], din);
+ end
+
+ out_valid <= (prime >= DEPTH[2:0]);
+
+ if (phase == (NPH-1)) begin
+ phase <= 3'd0;
+ end else begin
+ phase <= phase + 3'd1;
+ end
+
+ if (prime < DEPTH[2:0]) begin
+ prime <= prime + 3'd1;
+ end
end else begin
- // TODO: replace with the real datapath + control.
phase <= phase;
prime <= prime;
end
end
-
- // TODO: replace these placeholder outputs with the real ones.
- assign dout = '0;
- assign out_valid = 1'b0;
endmodule : fold_stage
*** End Patch
Exit code: 0
Wall time: 0 seconds
Output:
Success. Updated the following files:
M /work/fold_core/rtl/fold_stage.sv
iverilog -g2012 -I fold_core/rtl -o /tmp/fold_compile.vvp fold_core/rtl/fold_pkg.sv fold_core/rtl/fold_stage.sv fold_core/rtl/fold_top.sv
Chunk ID: 7a7ff1 Wall time: 0.0000 seconds Process exited with code 4 Original token count: 58 Output: fold_core/rtl/fold_stage.sv:52: syntax error fold_core/rtl/fold_stage.sv:51: error: Syntax error defining function. fold_core/rtl/fold_stage.sv:64: syntax error fold_core/rtl/fold_stage.sv:63: error: Syntax error defining function.
sed -n '1,220p' fold_core/rtl/fold_stage.sv
Chunk ID: f7979d
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 952
Output:
//==============================================================================
// fold_stage.sv
//
// Enable-gated streaming fold stage.
//
// ---------------------------------------------------------------------------
// >>> IMPLEMENTATION REQUIRED <<<
//
// The module ports, parameters and the state registers are provided. The
// datapath, the phase/priming control and the outputs are left as a TODO and
// currently drive constant zeros, so the stage produces no useful stream and
// the verifier FAILS.
//
// Implement the behaviour described in instruction.md. Do NOT change the
// module name, the port list, or the parameter list.
//
// iverilog 11 note: a bit/part-select of an EXPRESSION (a sum, a shift, a
// function-call result) is a syntax error under `iverilog -g2012`. Index only
// named signals, and do any bit work that needs an intermediate value inside a
// `function automatic` using named locals.
// ---------------------------------------------------------------------------
//==============================================================================
`timescale 1ns/1ps
module fold_stage #(
parameter DW = 12,
parameter DEPTH = 4,
parameter NPH = 8
) (
input logic clk,
input logic rst_n,
input logic en,
input logic signed [DW-1:0] din,
output logic signed [DW-1:0] dout,
output logic out_valid
);
// ---------------------------------------------------------------------------
// State registers (provided). The head of the feedback line is line[DEPTH-1].
// ---------------------------------------------------------------------------
logic signed [DW-1:0] line [0:DEPTH-1];
logic [2:0] phase;
logic [2:0] prime;
integer k;
localparam logic signed [DW:0] SAT_MAX_EXT = {2'b00, {(DW-1){1'b1}}};
localparam logic signed [DW:0] SAT_MIN_EXT = {2'b11, {(DW-1){1'b0}}};
localparam logic signed [DW-1:0] SAT_MAX = {1'b0, {(DW-1){1'b1}}};
localparam logic signed [DW-1:0] SAT_MIN = {1'b1, {(DW-1){1'b0}}};
function automatic logic signed [DW-1:0] rounded_half_up;
input logic signed [DW-1:0] a;
input logic signed [DW-1:0] b;
logic signed [DW:0] sum;
logic signed [DW:0] shifted;
begin
sum = $signed(a) + $signed(b) + 1;
shifted = sum >>> 1;
rounded_half_up = shifted[DW-1:0];
end
endfunction
function automatic logic signed [DW-1:0] saturated_sub;
input logic signed [DW-1:0] a;
input logic signed [DW-1:0] b;
logic signed [DW:0] diff;
begin
diff = $signed(a) - $signed(b);
if (diff > SAT_MAX_EXT) begin
saturated_sub = SAT_MAX;
end else if (diff < SAT_MIN_EXT) begin
saturated_sub = SAT_MIN;
end else begin
saturated_sub = diff[DW-1:0];
end
end
endfunction
always_ff @(posedge clk or negedge rst_n) begin
if (!rst_n) begin
for (k = 0; k < DEPTH; k = k + 1) line[k] <= '0;
phase <= 3'd0;
prime <= 3'd0;
dout <= '0;
out_valid <= 1'b0;
end else if (en) begin
for (k = DEPTH-1; k > 0; k = k - 1) line[k] <= line[k-1];
if (phase < DEPTH[2:0]) begin
dout <= line[DEPTH-1];
line[0] <= din;
end else begin
dout <= rounded_half_up(line[DEPTH-1], din);
line[0] <= saturated_sub(line[DEPTH-1], din);
end
out_valid <= (prime >= DEPTH[2:0]);
if (phase == (NPH-1)) begin
phase <= 3'd0;
end else begin
phase <= phase + 3'd1;
end
if (prime < DEPTH[2:0]) begin
prime <= prime + 3'd1;
end
end else begin
phase <= phase;
prime <= prime;
end
end
endmodule : fold_stage
*** Begin Patch *** Update File: /work/fold_core/rtl/fold_stage.sv @@ - function automatic logic signed [DW-1:0] rounded_half_up; - input logic signed [DW-1:0] a; - input logic signed [DW-1:0] b; - logic signed [DW:0] sum; - logic signed [DW:0] shifted; + function automatic signed [DW-1:0] rounded_half_up; + input signed [DW-1:0] a; + input signed [DW-1:0] b; + reg signed [DW:0] sum; + reg signed [DW:0] shifted; @@ - function automatic logic signed [DW-1:0] saturated_sub; - input logic signed [DW-1:0] a; - input logic signed [DW-1:0] b; - logic signed [DW:0] diff; + function automatic signed [DW-1:0] saturated_sub; + input signed [DW-1:0] a; + input signed [DW-1:0] b; + reg signed [DW:0] diff; @@ - if (phase < DEPTH[2:0]) begin + if (phase < DEPTH) begin @@ - out_valid <= (prime >= DEPTH[2:0]); + out_valid <= (prime >= DEPTH); @@ - if (prime < DEPTH[2:0]) begin + if (prime < DEPTH) begin *** End Patch Exit code: 0 Wall time: 0 seconds Output: Success. Updated the following files: M /work/fold_core/rtl/fold_stage.sv
iverilog -g2012 -I fold_core/rtl -o /tmp/fold_compile.vvp fold_core/rtl/fold_pkg.sv fold_core/rtl/fold_stage.sv fold_core/rtl/fold_top.sv
Chunk ID: d0741d Wall time: 0.0000 seconds Process exited with code 0 Original token count: 0 Output:
sed -n '36,125p' fold_core/rtl/fold_stage.sv
Chunk ID: b61901
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 569
Output:
);
// ---------------------------------------------------------------------------
// State registers (provided). The head of the feedback line is line[DEPTH-1].
// ---------------------------------------------------------------------------
logic signed [DW-1:0] line [0:DEPTH-1];
logic [2:0] phase;
logic [2:0] prime;
integer k;
localparam logic signed [DW:0] SAT_MAX_EXT = {2'b00, {(DW-1){1'b1}}};
localparam logic signed [DW:0] SAT_MIN_EXT = {2'b11, {(DW-1){1'b0}}};
localparam logic signed [DW-1:0] SAT_MAX = {1'b0, {(DW-1){1'b1}}};
localparam logic signed [DW-1:0] SAT_MIN = {1'b1, {(DW-1){1'b0}}};
function automatic signed [DW-1:0] rounded_half_up;
input signed [DW-1:0] a;
input signed [DW-1:0] b;
reg signed [DW:0] sum;
reg signed [DW:0] shifted;
begin
sum = $signed(a) + $signed(b) + 1;
shifted = sum >>> 1;
rounded_half_up = shifted[DW-1:0];
end
endfunction
function automatic signed [DW-1:0] saturated_sub;
input signed [DW-1:0] a;
input signed [DW-1:0] b;
reg signed [DW:0] diff;
begin
diff = $signed(a) - $signed(b);
if (diff > SAT_MAX_EXT) begin
saturated_sub = SAT_MAX;
end else if (diff < SAT_MIN_EXT) begin
saturated_sub = SAT_MIN;
end else begin
saturated_sub = diff[DW-1:0];
end
end
endfunction
always_ff @(posedge clk or negedge rst_n) begin
if (!rst_n) begin
for (k = 0; k < DEPTH; k = k + 1) line[k] <= '0;
phase <= 3'd0;
prime <= 3'd0;
dout <= '0;
out_valid <= 1'b0;
end else if (en) begin
for (k = DEPTH-1; k > 0; k = k - 1) line[k] <= line[k-1];
if (phase < DEPTH) begin
dout <= line[DEPTH-1];
line[0] <= din;
end else begin
dout <= rounded_half_up(line[DEPTH-1], din);
line[0] <= saturated_sub(line[DEPTH-1], din);
end
out_valid <= (prime >= DEPTH);
if (phase == (NPH-1)) begin
phase <= 3'd0;
end else begin
phase <= phase + 3'd1;
end
if (prime < DEPTH) begin
prime <= prime + 3'd1;
end
end else begin
phase <= phase;
prime <= prime;
end
end
endmodule : fold_stage
*** Begin Patch
*** Update File: /work/fold_core/rtl/fold_stage.sv
@@
input signed [DW-1:0] a;
input signed [DW-1:0] b;
+ reg signed [DW:0] a_ext;
+ reg signed [DW:0] b_ext;
reg signed [DW:0] sum;
reg signed [DW:0] shifted;
begin
- sum = $signed(a) + $signed(b) + 1;
+ a_ext = {a[DW-1], a};
+ b_ext = {b[DW-1], b};
+ sum = a_ext + b_ext + 1;
shifted = sum >>> 1;
rounded_half_up = shifted[DW-1:0];
end
endfunction
@@
input signed [DW-1:0] a;
input signed [DW-1:0] b;
+ reg signed [DW:0] a_ext;
+ reg signed [DW:0] b_ext;
reg signed [DW:0] diff;
begin
- diff = $signed(a) - $signed(b);
+ a_ext = {a[DW-1], a};
+ b_ext = {b[DW-1], b};
+ diff = a_ext - b_ext;
if (diff > SAT_MAX_EXT) begin
*** End Patch
Exit code: 0
Wall time: 0 seconds
Output:
Success. Updated the following files:
M /work/fold_core/rtl/fold_stage.sv
iverilog -g2012 -I fold_core/rtl -o /tmp/fold_compile.vvp fold_core/rtl/fold_pkg.sv fold_core/rtl/fold_stage.sv fold_core/rtl/fold_top.sv
Chunk ID: 01a28b Wall time: 0.0000 seconds Process exited with code 0 Original token count: 0 Output:
sed -n '45,120p' fold_core/rtl/fold_stage.sv
Chunk ID: fb6bb7
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 519
Output:
localparam logic signed [DW:0] SAT_MAX_EXT = {2'b00, {(DW-1){1'b1}}};
localparam logic signed [DW:0] SAT_MIN_EXT = {2'b11, {(DW-1){1'b0}}};
localparam logic signed [DW-1:0] SAT_MAX = {1'b0, {(DW-1){1'b1}}};
localparam logic signed [DW-1:0] SAT_MIN = {1'b1, {(DW-1){1'b0}}};
function automatic signed [DW-1:0] rounded_half_up;
input signed [DW-1:0] a;
input signed [DW-1:0] b;
reg signed [DW:0] a_ext;
reg signed [DW:0] b_ext;
reg signed [DW:0] sum;
reg signed [DW:0] shifted;
begin
a_ext = {a[DW-1], a};
b_ext = {b[DW-1], b};
sum = a_ext + b_ext + 1;
shifted = sum >>> 1;
rounded_half_up = shifted[DW-1:0];
end
endfunction
function automatic signed [DW-1:0] saturated_sub;
input signed [DW-1:0] a;
input signed [DW-1:0] b;
reg signed [DW:0] a_ext;
reg signed [DW:0] b_ext;
reg signed [DW:0] diff;
begin
a_ext = {a[DW-1], a};
b_ext = {b[DW-1], b};
diff = a_ext - b_ext;
if (diff > SAT_MAX_EXT) begin
saturated_sub = SAT_MAX;
end else if (diff < SAT_MIN_EXT) begin
saturated_sub = SAT_MIN;
end else begin
saturated_sub = diff[DW-1:0];
end
end
endfunction
always_ff @(posedge clk or negedge rst_n) begin
if (!rst_n) begin
for (k = 0; k < DEPTH; k = k + 1) line[k] <= '0;
phase <= 3'd0;
prime <= 3'd0;
dout <= '0;
out_valid <= 1'b0;
end else if (en) begin
for (k = DEPTH-1; k > 0; k = k - 1) line[k] <= line[k-1];
if (phase < DEPTH) begin
dout <= line[DEPTH-1];
line[0] <= din;
end else begin
dout <= rounded_half_up(line[DEPTH-1], din);
line[0] <= saturated_sub(line[DEPTH-1], din);
end
out_valid <= (prime >= DEPTH);
if (phase == (NPH-1)) begin
phase <= 3'd0;
end else begin
phase <= phase + 3'd1;
end
if (prime < DEPTH) begin
prime <= prime + 3'd1;
end
end else begin
phase <= phase;
prime <= prime;
end
*** Begin Patch
*** Add File: /tmp/fold_selfcheck.sv
+`timescale 1ns/1ps
+
+module tb;
+ logic clk;
+ logic rst_n;
+ logic en;
+ logic signed [11:0] din;
+ logic signed [11:0] dout;
+ logic out_valid;
+
+ int signed model_line [0:3];
+ int model_phase;
+ int model_prime;
+ int signed model_dout;
+ bit model_valid;
+ int i;
+
+ fold_stage dut (
+ .clk (clk),
+ .rst_n (rst_n),
+ .en (en),
+ .din (din),
+ .dout (dout),
+ .out_valid (out_valid)
+ );
+
+ initial clk = 1'b0;
+ always #5 clk = ~clk;
+
+ function automatic int signed sat12;
+ input int signed v;
+ begin
+ if (v > 2047) sat12 = 2047;
+ else if (v < -2048) sat12 = -2048;
+ else sat12 = v;
+ end
+ endfunction
+
+ function automatic int signed s12;
+ input int signed v;
+ begin
+ s12 = sat12(v);
+ end
+ endfunction
+
+ task automatic reset_model;
+ begin
+ for (i = 0; i < 4; i = i + 1) model_line[i] = 0;
+ model_phase = 0;
+ model_prime = 0;
+ model_dout = 0;
+ model_valid = 1'b0;
+ end
+ endtask
+
+ task automatic check_outputs;
+ begin
+ if (dout !== model_dout || out_valid !== model_valid) begin
+ $display("FAIL t=%0t got dout=%0d valid=%0b expected dout=%0d valid=%0b",
+ $time, dout, out_valid, model_dout, model_valid);
+ $finish;
+ end
+ end
+ endtask
+
+ task automatic step;
+ input bit en_i;
+ input int signed din_i;
+ int signed h;
+ int signed inserted;
+ begin
+ @(negedge clk);
+ en = en_i;
+ din = s12(din_i);
+ @(posedge clk);
+ #1;
+ if (en_i) begin
+ h = model_line[3];
+ if (model_phase < 4) begin
+ model_dout = h;
+ inserted = din;
+ end else begin
+ model_dout = (h + din + 1) >>> 1;
+ inserted = sat12(h - din);
+ end
+
+ model_line[3] = model_line[2];
+ model_line[2] = model_line[1];
+ model_line[1] = model_line[0];
+ model_line[0] = inserted;
+ model_valid = (model_prime >= 4);
+ model_phase = (model_phase == 7) ? 0 : model_phase + 1;
+ if (model_prime < 4) model_prime = model_prime + 1;
+ end
+ check_outputs();
+ end
+ endtask
+
+ initial begin
+ en = 1'b0;
+ din = '0;
+ reset_model();
+ rst_n = 1'b0;
+ #1;
+ check_outputs();
+ repeat (2) @(posedge clk);
+ rst_n = 1'b1;
+
+ step(1, 10);
+ step(0, 999);
+ step(0, -999);
+ step(1, 20);
+ step(1, 30);
+ step(1, 40);
+ step(1, 100);
+ step(1, -101);
+ step(1, 2047);
+ step(1, -2048);
+
+ for (i = 0; i < 300; i = i + 1) begin
+ step(($urandom % 4) != 0, $signed($urandom_range(0, 4095)) - 2048);
+ end
+
+ @(negedge clk);
+ rst_n = 1'b0;
+ reset_model();
+ #1;
+ check_outputs();
+ rst_n = 1'b1;
+ step(0, 123);
+ step(1, -2048);
+ step(1, 2047);
+ step(1, -1);
+ step(1, 0);
+ step(1, 2047);
+ step(1, -2048);
+
+ $display("PASS");
+ $finish;
+ end
+endmodule
*** End Patch
Exit code: 0
Wall time: 0 seconds
Output:
Success. Updated the following files:
A /tmp/fold_selfcheck.sv
iverilog -g2012 -I fold_core/rtl -o /tmp/fold_selfcheck.vvp /tmp/fold_selfcheck.sv fold_core/rtl/fold_stage.sv && vvp /tmp/fold_selfcheck.vvp
Chunk ID: b2d930 Wall time: 0.0000 seconds Process exited with code 5 Original token count: 63 Output: /tmp/fold_selfcheck.sv:31: syntax error /tmp/fold_selfcheck.sv:30: error: Syntax error defining function. /tmp/fold_selfcheck.sv:40: syntax error /tmp/fold_selfcheck.sv:39: error: Syntax error defining function. /tmp/fold_selfcheck.sv:67: syntax error
nl -ba /tmp/fold_selfcheck.sv | sed -n '24,76p'
Chunk ID: 2d643c
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 373
Output:
24 .out_valid (out_valid)
25 );
26
27 initial clk = 1'b0;
28 always #5 clk = ~clk;
29
30 function automatic int signed sat12;
31 input int signed v;
32 begin
33 if (v > 2047) sat12 = 2047;
34 else if (v < -2048) sat12 = -2048;
35 else sat12 = v;
36 end
37 endfunction
38
39 function automatic int signed s12;
40 input int signed v;
41 begin
42 s12 = sat12(v);
43 end
44 endfunction
45
46 task automatic reset_model;
47 begin
48 for (i = 0; i < 4; i = i + 1) model_line[i] = 0;
49 model_phase = 0;
50 model_prime = 0;
51 model_dout = 0;
52 model_valid = 1'b0;
53 end
54 endtask
55
56 task automatic check_outputs;
57 begin
58 if (dout !== model_dout || out_valid !== model_valid) begin
59 $display("FAIL t=%0t got dout=%0d valid=%0b expected dout=%0d valid=%0b",
60 $time, dout, out_valid, model_dout, model_valid);
61 $finish;
62 end
63 end
64 endtask
65
66 task automatic step;
67 input bit en_i;
68 input int signed din_i;
69 int signed h;
70 int signed inserted;
71 begin
72 @(negedge clk);
73 en = en_i;
74 din = s12(din_i);
75 @(posedge clk);
76 #1;
iverilog -g2012 -I fold_core/rtl -o /tmp/fold_compile.vvp fold_core/rtl/fold_pkg.sv fold_core/rtl/fold_stage.sv fold_core/rtl/fold_top.sv
Chunk ID: 540751 Wall time: 0.0000 seconds Process exited with code 0 Original token count: 0 Output:
*** Begin Patch *** Update File: /tmp/fold_selfcheck.sv @@ - int signed model_line [0:3]; - int model_phase; - int model_prime; - int signed model_dout; + integer model_line [0:3]; + integer model_phase; + integer model_prime; + integer model_dout; @@ - int i; + integer i; @@ - function automatic int signed sat12; - input int signed v; + function automatic integer sat12; + input integer v; @@ - function automatic int signed s12; - input int signed v; + function automatic integer s12; + input integer v; @@ task automatic step; - input bit en_i; - input int signed din_i; - int signed h; - int signed inserted; + input en_i; + input integer din_i; + integer h; + integer inserted; *** End Patch Exit code: 0 Wall time: 0 seconds Output: Success. Updated the following files: M /tmp/fold_selfcheck.sv
iverilog -g2012 -I fold_core/rtl -o /tmp/fold_selfcheck.vvp /tmp/fold_selfcheck.sv fold_core/rtl/fold_stage.sv && vvp /tmp/fold_selfcheck.vvp
Chunk ID: 8fd227 Wall time: 0.0000 seconds Process exited with code 0 Original token count: 16 Output: FAIL t=3176000 got dout=-434 valid=1 expected dout=0 valid=0
nl -ba /tmp/fold_selfcheck.sv | sed -n '92,132p'
Chunk ID: 06ce90
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 273
Output:
92 model_phase = (model_phase == 7) ? 0 : model_phase + 1;
93 if (model_prime < 4) model_prime = model_prime + 1;
94 end
95 check_outputs();
96 end
97 endtask
98
99 initial begin
100 en = 1'b0;
101 din = '0;
102 reset_model();
103 rst_n = 1'b0;
104 #1;
105 check_outputs();
106 repeat (2) @(posedge clk);
107 rst_n = 1'b1;
108
109 step(1, 10);
110 step(0, 999);
111 step(0, -999);
112 step(1, 20);
113 step(1, 30);
114 step(1, 40);
115 step(1, 100);
116 step(1, -101);
117 step(1, 2047);
118 step(1, -2048);
119
120 for (i = 0; i < 300; i = i + 1) begin
121 step(($urandom % 4) != 0, $signed($urandom_range(0, 4095)) - 2048);
122 end
123
124 @(negedge clk);
125 rst_n = 1'b0;
126 reset_model();
127 #1;
128 check_outputs();
129 rst_n = 1'b1;
130 step(0, 123);
131 step(1, -2048);
132 step(1, 2047);
iverilog -g2012 -Wall -I fold_core/rtl -o /tmp/fold_compile.vvp fold_core/rtl/fold_pkg.sv fold_core/rtl/fold_stage.sv fold_core/rtl/fold_top.sv
Chunk ID: 0867ef
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 61
Output:
warning: Some design elements have no explicit time unit and/or
: time precision. This may cause confusing timing results.
: Affected design elements are:
: -- package fold_pkg declared here: fold_core/rtl/fold_pkg.sv:15
*** Begin Patch
*** Update File: /tmp/fold_selfcheck.sv
@@
- @(negedge clk);
+ @(negedge clk);
+ #1;
rst_n = 1'b0;
reset_model();
#1;
*** End Patch
Exit code: 0
Wall time: 0 seconds
Output:
Success. Updated the following files:
M /tmp/fold_selfcheck.sv
iverilog -g2012 -I fold_core/rtl -o /tmp/fold_selfcheck.vvp /tmp/fold_selfcheck.sv fold_core/rtl/fold_stage.sv && vvp /tmp/fold_selfcheck.vvp
Chunk ID: 6a1e6e Wall time: 0.0000 seconds Process exited with code 0 Original token count: 16 Output: FAIL t=3176000 got dout=-434 valid=1 expected dout=0 valid=0
nl -ba /tmp/fold_selfcheck.sv | sed -n '99,132p'
Chunk ID: 89416a
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 214
Output:
99 initial begin
100 en = 1'b0;
101 din = '0;
102 reset_model();
103 rst_n = 1'b0;
104 #1;
105 check_outputs();
106 repeat (2) @(posedge clk);
107 rst_n = 1'b1;
108
109 step(1, 10);
110 step(0, 999);
111 step(0, -999);
112 step(1, 20);
113 step(1, 30);
114 step(1, 40);
115 step(1, 100);
116 step(1, -101);
117 step(1, 2047);
118 step(1, -2048);
119
120 for (i = 0; i < 300; i = i + 1) begin
121 step(($urandom % 4) != 0, $signed($urandom_range(0, 4095)) - 2048);
122 end
123
124 @(negedge clk);
125 #1;
126 rst_n = 1'b0;
127 reset_model();
128 #1;
129 check_outputs();
130 rst_n = 1'b1;
131 step(0, 123);
132 step(1, -2048);
*** Begin Patch
*** Add File: /tmp/fold_reset_probe.sv
+`timescale 1ns/1ps
+
+module tb;
+ logic clk;
+ logic rst_n;
+ logic en;
+ logic signed [11:0] din;
+ logic signed [11:0] dout;
+ logic out_valid;
+
+ fold_stage dut (
+ .clk(clk),
+ .rst_n(rst_n),
+ .en(en),
+ .din(din),
+ .dout(dout),
+ .out_valid(out_valid)
+ );
+
+ initial clk = 0;
+ always #5 clk = ~clk;
+
+ initial begin
+ en = 0;
+ din = 0;
+ rst_n = 0;
+ #12;
+ rst_n = 1;
+ @(negedge clk);
+ en = 1;
+ din = 12'sd1;
+ repeat (8) @(negedge clk);
+ $display("before reset t=%0t dout=%0d valid=%0b rst=%0b", $time, dout, out_valid, rst_n);
+ #1;
+ rst_n = 0;
+ #1;
+ $display("after reset t=%0t dout=%0d valid=%0b rst=%0b", $time, dout, out_valid, rst_n);
+ if (dout !== 0 || out_valid !== 0) $display("RESET_FAIL");
+ else $display("RESET_PASS");
+ $finish;
+ end
+endmodule
*** End Patch
Exit code: 0
Wall time: 0 seconds
Output:
Success. Updated the following files:
A /tmp/fold_reset_probe.sv
iverilog -g2012 -I fold_core/rtl -o /tmp/fold_reset_probe.vvp /tmp/fold_reset_probe.sv fold_core/rtl/fold_stage.sv && vvp /tmp/fold_reset_probe.vvp
Chunk ID: 6b75f3 Wall time: 0.0000 seconds Process exited with code 0 Original token count: 24 Output: before reset t=100000 dout=1 valid=1 rst=1 after reset t=102000 dout=0 valid=0 rst=0 RESET_PASS
*** Begin Patch
*** Update File: /tmp/fold_selfcheck.sv
@@
#1;
rst_n = 1'b0;
reset_model();
#1;
+ $display("debug reset t=%0t dout=%0d valid=%0b rst=%0b", $time, dout, out_valid, rst_n);
check_outputs();
*** End Patch
Exit code: 0
Wall time: 0 seconds
Output:
Success. Updated the following files:
M /tmp/fold_selfcheck.sv
iverilog -g2012 -I fold_core/rtl -o /tmp/fold_selfcheck.vvp /tmp/fold_selfcheck.sv fold_core/rtl/fold_stage.sv && vvp /tmp/fold_selfcheck.vvp
Chunk ID: fe5351 Wall time: 0.0000 seconds Process exited with code 0 Original token count: 26 Output: debug reset t=3122000 dout=0 valid=0 rst=0 FAIL t=3176000 got dout=-434 valid=1 expected dout=0 valid=0
*** Begin Patch
*** Update File: /tmp/fold_selfcheck.sv
@@
- $display("debug reset t=%0t dout=%0d valid=%0b rst=%0b", $time, dout, out_valid, rst_n);
check_outputs();
+ en = 1'b0;
rst_n = 1'b1;
*** End Patch
Exit code: 0
Wall time: 0 seconds
Output:
Success. Updated the following files:
M /tmp/fold_selfcheck.sv
iverilog -g2012 -I fold_core/rtl -o /tmp/fold_selfcheck.vvp /tmp/fold_selfcheck.sv fold_core/rtl/fold_stage.sv && vvp /tmp/fold_selfcheck.vvp
Chunk ID: 195fa0 Wall time: 0.0000 seconds Process exited with code 0 Original token count: 2 Output: PASS
*** Begin Patch
*** Update File: /work/fold_core/rtl/fold_stage.sv
@@
-// >>> IMPLEMENTATION REQUIRED <<<
-//
-// The module ports, parameters and the state registers are provided. The
-// datapath, the phase/priming control and the outputs are left as a TODO and
-// currently drive constant zeros, so the stage produces no useful stream and
-// the verifier FAILS.
-//
-// Implement the behaviour described in instruction.md. Do NOT change the
-// module name, the port list, or the parameter list.
-//
// iverilog 11 note: a bit/part-select of an EXPRESSION (a sum, a shift, a
// function-call result) is a syntax error under `iverilog -g2012`. Index only
// named signals, and do any bit work that needs an intermediate value inside a
// `function automatic` using named locals.
@@
- end else begin
- phase <= phase;
- prime <= prime;
end
end
endmodule : fold_stage
*** End Patch
Exit code: 0
Wall time: 0 seconds
Output:
Success. Updated the following files:
M /work/fold_core/rtl/fold_stage.sv
iverilog -g2012 -I fold_core/rtl -o /tmp/fold_compile.vvp fold_core/rtl/fold_pkg.sv fold_core/rtl/fold_stage.sv fold_core/rtl/fold_top.sv
Chunk ID: f22d75 Wall time: 0.0000 seconds Process exited with code 0 Original token count: 0 Output:
iverilog -g2012 -I fold_core/rtl -o /tmp/fold_selfcheck.vvp /tmp/fold_selfcheck.sv fold_core/rtl/fold_stage.sv && vvp /tmp/fold_selfcheck.vvp
Chunk ID: b54839 Wall time: 0.0000 seconds Process exited with code 0 Original token count: 2 Output: PASS
sed -n '1,170p' fold_core/rtl/fold_stage.sv
Chunk ID: d897bf
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 866
Output:
//==============================================================================
// fold_stage.sv
//
// Enable-gated streaming fold stage.
//
// ---------------------------------------------------------------------------
// iverilog 11 note: a bit/part-select of an EXPRESSION (a sum, a shift, a
// function-call result) is a syntax error under `iverilog -g2012`. Index only
// named signals, and do any bit work that needs an intermediate value inside a
// `function automatic` using named locals.
// ---------------------------------------------------------------------------
//==============================================================================
`timescale 1ns/1ps
module fold_stage #(
parameter DW = 12,
parameter DEPTH = 4,
parameter NPH = 8
) (
input logic clk,
input logic rst_n,
input logic en,
input logic signed [DW-1:0] din,
output logic signed [DW-1:0] dout,
output logic out_valid
);
// ---------------------------------------------------------------------------
// State registers (provided). The head of the feedback line is line[DEPTH-1].
// ---------------------------------------------------------------------------
logic signed [DW-1:0] line [0:DEPTH-1];
logic [2:0] phase;
logic [2:0] prime;
integer k;
localparam logic signed [DW:0] SAT_MAX_EXT = {2'b00, {(DW-1){1'b1}}};
localparam logic signed [DW:0] SAT_MIN_EXT = {2'b11, {(DW-1){1'b0}}};
localparam logic signed [DW-1:0] SAT_MAX = {1'b0, {(DW-1){1'b1}}};
localparam logic signed [DW-1:0] SAT_MIN = {1'b1, {(DW-1){1'b0}}};
function automatic signed [DW-1:0] rounded_half_up;
input signed [DW-1:0] a;
input signed [DW-1:0] b;
reg signed [DW:0] a_ext;
reg signed [DW:0] b_ext;
reg signed [DW:0] sum;
reg signed [DW:0] shifted;
begin
a_ext = {a[DW-1], a};
b_ext = {b[DW-1], b};
sum = a_ext + b_ext + 1;
shifted = sum >>> 1;
rounded_half_up = shifted[DW-1:0];
end
endfunction
function automatic signed [DW-1:0] saturated_sub;
input signed [DW-1:0] a;
input signed [DW-1:0] b;
reg signed [DW:0] a_ext;
reg signed [DW:0] b_ext;
reg signed [DW:0] diff;
begin
a_ext = {a[DW-1], a};
b_ext = {b[DW-1], b};
diff = a_ext - b_ext;
if (diff > SAT_MAX_EXT) begin
saturated_sub = SAT_MAX;
end else if (diff < SAT_MIN_EXT) begin
saturated_sub = SAT_MIN;
end else begin
saturated_sub = diff[DW-1:0];
end
end
endfunction
always_ff @(posedge clk or negedge rst_n) begin
if (!rst_n) begin
for (k = 0; k < DEPTH; k = k + 1) line[k] <= '0;
phase <= 3'd0;
prime <= 3'd0;
dout <= '0;
out_valid <= 1'b0;
end else if (en) begin
for (k = DEPTH-1; k > 0; k = k - 1) line[k] <= line[k-1];
if (phase < DEPTH) begin
dout <= line[DEPTH-1];
line[0] <= din;
end else begin
dout <= rounded_half_up(line[DEPTH-1], din);
line[0] <= saturated_sub(line[DEPTH-1], din);
end
out_valid <= (prime >= DEPTH);
if (phase == (NPH-1)) begin
phase <= 3'd0;
end else begin
phase <= phase + 3'd1;
end
if (prime < DEPTH) begin
prime <= prime + 3'd1;
end
end
end
endmodule : fold_stage
No file changes, the agent left the workspace untouched.
test.sh: compiling with iverilog... ----- iverilog output ----- --------------------------- test.sh: running simulation with vvp... ----- simulation output ----- INFO samples=544 dmiss=0 vmiss=0 INFO probe_counts wide=8 replay=4 reset_en=7 freeze=71 SAMPLES=544 ALL TESTS PASSED ----------------------------- test.sh: PASS - 544 samples, no mismatches
Reproduce this trial: git checkout 2f94510 && PYTHONPATH=src python3 scripts/build_site.py , then open trial/trial_c7b1379ed840442c. Re-running the agent live requires EVAL_PLATFORM_ENABLE_OAUTH_SMOKE=1 and is non-deterministic.
Trial trial_c7b1379ed840442c · verifier authoritative; classifier explanatory.