tests/test.sh exit code (0 → resolved); the classification below is post-hoc and cannot change it.rg --files
Chunk ID: 38b04f Wall time: 0.0000 seconds Process exited with code 0 Original token count: 19 Output: sdiv_core/rtl/sdiv.sv sdiv_core/rtl/divp_pkg.sv sdiv_core/rtl/sdiv_top.sv
sed -n '1,220p' rtl/sdiv.sv
Chunk ID: 44f2f9 Wall time: 0.0000 seconds Process exited with code 2 Original token count: 14 Output: sed: can't read rtl/sdiv.sv: No such file or directory
rg -n "package|parameter|module sdiv|sdiv" -S .
Chunk ID: e7f3b4 Wall time: 0.0076 seconds Process exited with code 0 Original token count: 251 Output: ./sdiv_core/rtl/sdiv_top.sv:2:// sdiv_top.sv ./sdiv_core/rtl/sdiv_top.sv:6:// instantiates sdiv with the project-default geometry from divp_pkg. ./sdiv_core/rtl/sdiv_top.sv:13:module sdiv_top ( ./sdiv_core/rtl/sdiv_top.sv:26: // submission needs no parameter override to elaborate correctly. ./sdiv_core/rtl/sdiv_top.sv:27: sdiv u_sdiv ( ./sdiv_core/rtl/sdiv_top.sv:39:endmodule : sdiv_top ./sdiv_core/rtl/divp_pkg.sv:7:// handshake. Parameters are declared without an explicit data type for broad ./sdiv_core/rtl/divp_pkg.sv:16:package divp_pkg; ./sdiv_core/rtl/divp_pkg.sv:26:endpackage : divp_pkg ./sdiv_core/rtl/sdiv.sv:2:// sdiv.sv ./sdiv_core/rtl/sdiv.sv:9:// The module ports, parameters and a small set of state registers are ./sdiv_core/rtl/sdiv.sv:15:// module name, the port list, or the parameter list. ./sdiv_core/rtl/sdiv.sv:26:module sdiv #( ./sdiv_core/rtl/sdiv.sv:27: parameter W = 16, ./sdiv_core/rtl/sdiv.sv:28: parameter N = 16 ./sdiv_core/rtl/sdiv.sv:76:endmodule : sdiv
sed -n '1,220p' sdiv_core/rtl/sdiv.sv
Chunk ID: eed5fa
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 811
Output:
//==============================================================================
// sdiv.sv
//
// Multi-cycle signed integer divider with a start/busy/valid handshake.
//
// ---------------------------------------------------------------------------
// >>> IMPLEMENTATION REQUIRED <<<
//
// The module ports, parameters and a small set of state registers are
// provided. The operand latch, the latency/handshake control and the signed
// result are left as a TODO and currently drive constant zeros, so the divider
// produces no useful result 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. Write negative full-scale constants
// as bit patterns (e.g. 16'h8000 for -32768), not as -16'sd32768.
// ---------------------------------------------------------------------------
//==============================================================================
`timescale 1ns/1ps
module sdiv #(
parameter W = 16,
parameter N = 16
) (
input logic clk,
input logic rst_n,
input logic start,
input logic signed [W-1:0] dividend,
input logic signed [W-1:0] divisor,
output logic signed [W-1:0] quotient,
output logic signed [W-1:0] remainder,
output logic busy,
output logic valid
);
// ---------------------------------------------------------------------------
// State registers (provided). Latch the operands here on an accepted start and
// track the in-flight progress with the counter.
// ---------------------------------------------------------------------------
logic signed [W-1:0] a_q; // latched dividend
logic signed [W-1:0] b_q; // latched divisor
logic [7:0] cnt; // in-flight progress
logic run; // a divide is in progress
// ===========================================================================
// TODO: IMPLEMENT THE DIVIDER.
// * accept a start only when not busy; latch dividend/divisor at that edge;
// * after the fixed latency, present the signed quotient/remainder and pulse
// valid for one clock, with busy and valid never overlapping;
// * asynchronous active-low reset clears all state and all outputs.
//
// The placeholder below keeps the module compilable but INCORRECT.
// ===========================================================================
always_ff @(posedge clk or negedge rst_n) begin
if (!rst_n) begin
a_q <= '0;
b_q <= '0;
cnt <= 8'd0;
run <= 1'b0;
busy <= 1'b0;
valid <= 1'b0;
quotient <= '0;
remainder <= '0;
end else begin
// TODO: replace with the real latch + latency control + result.
run <= run;
cnt <= cnt;
end
end
endmodule : sdiv
sed -n '1,180p' sdiv_core/rtl/divp_pkg.sv
Chunk ID: 7e7f4e Wall time: 0.0000 seconds Process exited with code 0 Original token count: 303 Output: //============================================================================== // divp_pkg.sv // // Shared geometry and constants for the multi-cycle signed divider. The block // latches a signed dividend/divisor on an accepted start and produces a signed // quotient/remainder after a fixed number of clocks, with a start/busy/valid // handshake. 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 DIVP_PKG_SV `define DIVP_PKG_SV package divp_pkg; localparam W = 16; // operand / result word width (signed two's comp) localparam N = 16; // result latency: clocks from accept to valid // Defined divide-by-zero outputs (divisor == 0). Written as raw bit patterns // because the negative saturation value is the most-negative 16-bit number. localparam DIV0_Q_POS = 16'h7FFF; // 32767, used when dividend >= 0 localparam DIV0_Q_NEG = 16'h8000; // -32768, used when dividend < 0 endpackage : divp_pkg `endif // DIVP_PKG_SV
sed -n '1,180p' sdiv_core/rtl/sdiv_top.sv
Chunk ID: bb6684
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 346
Output:
//==============================================================================
// sdiv_top.sv
//
// Thin integration wrapper. The verification environment drives this wrapper so
// that the instantiation wiring is exercised alongside the divider itself. It
// instantiates sdiv with the project-default geometry from divp_pkg.
//
// DO NOT change this file.
//==============================================================================
`timescale 1ns/1ps
`include "divp_pkg.sv"
module sdiv_top (
input logic clk,
input logic rst_n,
input logic start,
input logic signed [divp_pkg::W-1:0] dividend,
input logic signed [divp_pkg::W-1:0] divisor,
output logic signed [divp_pkg::W-1:0] quotient,
output logic signed [divp_pkg::W-1:0] remainder,
output logic busy,
output logic valid
);
// Bare instantiation: the divider carries its own default geometry, so a
// submission needs no parameter override to elaborate correctly.
sdiv u_sdiv (
.clk (clk),
.rst_n (rst_n),
.start (start),
.dividend (dividend),
.divisor (divisor),
.quotient (quotient),
.remainder (remainder),
.busy (busy),
.valid (valid)
);
endmodule : sdiv_top
find /work -maxdepth 3 -type f | sort
Chunk ID: 6525d5 Wall time: 0.0000 seconds Process exited with code 0 Original token count: 23 Output: /work/sdiv_core/rtl/divp_pkg.sv /work/sdiv_core/rtl/sdiv.sv /work/sdiv_core/rtl/sdiv_top.sv
*** Begin Patch
*** Update File: /work/sdiv_core/rtl/sdiv.sv
@@
logic signed [W-1:0] a_q; // latched dividend
logic signed [W-1:0] b_q; // latched divisor
logic [7:0] cnt; // in-flight progress
logic run; // a divide is in progress
- // ===========================================================================
- // TODO: IMPLEMENT THE DIVIDER.
- // * accept a start only when not busy; latch dividend/divisor at that edge;
- // * after the fixed latency, present the signed quotient/remainder and pulse
- // valid for one clock, with busy and valid never overlapping;
- // * asynchronous active-low reset clears all state and all outputs.
- //
- // The placeholder below keeps the module compilable but INCORRECT.
- // ===========================================================================
+ logic [2*W-1:0] result_w;
+ logic signed [W-1:0] result_q;
+ logic signed [W-1:0] result_r;
+
+ function automatic logic [2*W-1:0] floor_div_result;
+ input logic signed [W-1:0] a;
+ input logic signed [W-1:0] b;
+
+ logic signed [W-1:0] q_tmp;
+ logic signed [W-1:0] r_tmp;
+ logic signed [W-1:0] min_int;
+ logic signed [W-1:0] max_int;
+ logic signed [W-1:0] neg_one;
+ begin
+ min_int = {1'b1, {(W-1){1'b0}}};
+ max_int = {1'b0, {(W-1){1'b1}}};
+ neg_one = {W{1'b1}};
+
+ if (b == '0) begin
+ if (a[W-1]) begin
+ q_tmp = min_int;
+ end else begin
+ q_tmp = max_int;
+ end
+ r_tmp = a;
+ end else if ((a == min_int) && (b == neg_one)) begin
+ q_tmp = max_int;
+ r_tmp = '0;
+ end else begin
+ q_tmp = a / b;
+ r_tmp = a % b;
+
+ if ((r_tmp != '0) && (a[W-1] ^ b[W-1])) begin
+ q_tmp = q_tmp - {{(W-1){1'b0}}, 1'b1};
+ r_tmp = r_tmp + b;
+ end
+ end
+
+ floor_div_result = {q_tmp, r_tmp};
+ end
+ endfunction
+
+ always_comb begin
+ result_w = floor_div_result(a_q, b_q);
+ result_q = result_w[2*W-1:W];
+ result_r = result_w[W-1:0];
+ end
+
always_ff @(posedge clk or negedge rst_n) begin
if (!rst_n) begin
a_q <= '0;
b_q <= '0;
cnt <= 8'd0;
@@
quotient <= '0;
remainder <= '0;
end else begin
- // TODO: replace with the real latch + latency control + result.
- run <= run;
- cnt <= cnt;
+ valid <= 1'b0;
+
+ if (run) begin
+ if (cnt == N) begin
+ run <= 1'b0;
+ cnt <= 8'd0;
+ busy <= 1'b0;
+ valid <= 1'b1;
+ quotient <= result_q;
+ remainder <= result_r;
+ end else begin
+ cnt <= cnt + 8'd1;
+ busy <= 1'b1;
+ end
+ end else if (start) begin
+ a_q <= dividend;
+ b_q <= divisor;
+ cnt <= 8'd1;
+ run <= 1'b1;
+ busy <= 1'b0;
+ end else begin
+ busy <= 1'b0;
+ end
end
end
endmodule : sdiv
*** End Patch
Exit code: 0
Wall time: 0 seconds
Output:
Success. Updated the following files:
M /work/sdiv_core/rtl/sdiv.sv
iverilog -g2012 -o /tmp/sdiv_compile.vvp sdiv_core/rtl/sdiv_top.sv sdiv_core/rtl/sdiv.sv
Chunk ID: a4106a Wall time: 0.0000 seconds Process exited with code 1 Original token count: 27 Output: sdiv_core/rtl/sdiv_top.sv:12: Include file divp_pkg.sv not found No top level modules, and no -s option.
nl -ba sdiv_core/rtl/sdiv.sv | sed -n '1,180p'
Chunk ID: 25fc5a
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 1313
Output:
1 //==============================================================================
2 // sdiv.sv
3 //
4 // Multi-cycle signed integer divider with a start/busy/valid handshake.
5 //
6 // ---------------------------------------------------------------------------
7 // >>> IMPLEMENTATION REQUIRED <<<
8 //
9 // The module ports, parameters and a small set of state registers are
10 // provided. The operand latch, the latency/handshake control and the signed
11 // result are left as a TODO and currently drive constant zeros, so the divider
12 // produces no useful result and the verifier FAILS.
13 //
14 // Implement the behaviour described in instruction.md. Do NOT change the
15 // module name, the port list, or the parameter list.
16 //
17 // iverilog 11 note: a bit/part-select of an EXPRESSION (a sum, a shift, a
18 // function-call result) is a syntax error under `iverilog -g2012`. Index only
19 // named signals, and do any bit work that needs an intermediate value inside a
20 // `function automatic` using named locals. Write negative full-scale constants
21 // as bit patterns (e.g. 16'h8000 for -32768), not as -16'sd32768.
22 // ---------------------------------------------------------------------------
23 //==============================================================================
24 `timescale 1ns/1ps
25
26 module sdiv #(
27 parameter W = 16,
28 parameter N = 16
29 ) (
30 input logic clk,
31 input logic rst_n,
32 input logic start,
33 input logic signed [W-1:0] dividend,
34 input logic signed [W-1:0] divisor,
35 output logic signed [W-1:0] quotient,
36 output logic signed [W-1:0] remainder,
37 output logic busy,
38 output logic valid
39 );
40
41 // ---------------------------------------------------------------------------
42 // State registers (provided). Latch the operands here on an accepted start and
43 // track the in-flight progress with the counter.
44 // ---------------------------------------------------------------------------
45 logic signed [W-1:0] a_q; // latched dividend
46 logic signed [W-1:0] b_q; // latched divisor
47 logic [7:0] cnt; // in-flight progress
48 logic run; // a divide is in progress
49
50 logic [2*W-1:0] result_w;
51 logic signed [W-1:0] result_q;
52 logic signed [W-1:0] result_r;
53
54 function automatic logic [2*W-1:0] floor_div_result;
55 input logic signed [W-1:0] a;
56 input logic signed [W-1:0] b;
57
58 logic signed [W-1:0] q_tmp;
59 logic signed [W-1:0] r_tmp;
60 logic signed [W-1:0] min_int;
61 logic signed [W-1:0] max_int;
62 logic signed [W-1:0] neg_one;
63 begin
64 min_int = {1'b1, {(W-1){1'b0}}};
65 max_int = {1'b0, {(W-1){1'b1}}};
66 neg_one = {W{1'b1}};
67
68 if (b == '0) begin
69 if (a[W-1]) begin
70 q_tmp = min_int;
71 end else begin
72 q_tmp = max_int;
73 end
74 r_tmp = a;
75 end else if ((a == min_int) && (b == neg_one)) begin
76 q_tmp = max_int;
77 r_tmp = '0;
78 end else begin
79 q_tmp = a / b;
80 r_tmp = a % b;
81
82 if ((r_tmp != '0) && (a[W-1] ^ b[W-1])) begin
83 q_tmp = q_tmp - {{(W-1){1'b0}}, 1'b1};
84 r_tmp = r_tmp + b;
85 end
86 end
87
88 floor_div_result = {q_tmp, r_tmp};
89 end
90 endfunction
91
92 always_comb begin
93 result_w = floor_div_result(a_q, b_q);
94 result_q = result_w[2*W-1:W];
95 result_r = result_w[W-1:0];
96 end
97
98 always_ff @(posedge clk or negedge rst_n) begin
99 if (!rst_n) begin
100 a_q <= '0;
101 b_q <= '0;
102 cnt <= 8'd0;
103 run <= 1'b0;
104 busy <= 1'b0;
105 valid <= 1'b0;
106 quotient <= '0;
107 remainder <= '0;
108 end else begin
109 valid <= 1'b0;
110
111 if (run) begin
112 if (cnt == N) begin
113 run <= 1'b0;
114 cnt <= 8'd0;
115 busy <= 1'b0;
116 valid <= 1'b1;
117 quotient <= result_q;
118 remainder <= result_r;
119 end else begin
120 cnt <= cnt + 8'd1;
121 busy <= 1'b1;
122 end
123 end else if (start) begin
124 a_q <= dividend;
125 b_q <= divisor;
126 cnt <= 8'd1;
127 run <= 1'b1;
128 busy <= 1'b0;
129 end else begin
130 busy <= 1'b0;
131 end
132 end
133 end
134
135 endmodule : sdiv
iverilog -g2012 -I sdiv_core/rtl -o /tmp/sdiv_compile.vvp sdiv_core/rtl/sdiv_top.sv sdiv_core/rtl/sdiv.sv
Chunk ID: e355ee Wall time: 0.0000 seconds Process exited with code 2 Original token count: 26 Output: sdiv_core/rtl/sdiv.sv:55: syntax error sdiv_core/rtl/sdiv.sv:54: error: Syntax error defining function.
*** Begin Patch *** Update File: /work/sdiv_core/rtl/sdiv.sv @@ - function automatic logic [2*W-1:0] floor_div_result; - input logic signed [W-1:0] a; - input logic signed [W-1:0] b; + function automatic [2*W-1:0] floor_div_result; + input signed [W-1:0] a; + input signed [W-1:0] b; - logic signed [W-1:0] q_tmp; - logic signed [W-1:0] r_tmp; - logic signed [W-1:0] min_int; - logic signed [W-1:0] max_int; - logic signed [W-1:0] neg_one; + reg signed [W-1:0] q_tmp; + reg signed [W-1:0] r_tmp; + reg signed [W-1:0] min_int; + reg signed [W-1:0] max_int; + reg signed [W-1:0] neg_one; *** End Patch Exit code: 0 Wall time: 0 seconds Output: Success. Updated the following files: M /work/sdiv_core/rtl/sdiv.sv
iverilog -g2012 -I sdiv_core/rtl -o /tmp/sdiv_compile.vvp sdiv_core/rtl/sdiv_top.sv sdiv_core/rtl/sdiv.sv
Chunk ID: 703518 Wall time: 0.0000 seconds Process exited with code 0 Original token count: 129 Output: sdiv_core/rtl/sdiv.sv:92: sorry: constant selects in always_* processes are not currently supported (all bits will be included). sdiv_core/rtl/sdiv.sv:92: sorry: constant selects in always_* processes are not currently supported (all bits will be included). sdiv_core/rtl/sdiv.sv:92: sorry: constant selects in always_* processes are not currently supported (all bits will be included). sdiv_core/rtl/sdiv.sv:92: sorry: constant selects in always_* processes are not currently supported (all bits will be included).
*** Begin Patch *** Update File: /work/sdiv_core/rtl/sdiv.sv @@ - always_comb begin - result_w = floor_div_result(a_q, b_q); - result_q = result_w[2*W-1:W]; - result_r = result_w[W-1:0]; - end + assign result_w = floor_div_result(a_q, b_q); + assign result_q = result_w[2*W-1:W]; + assign result_r = result_w[W-1:0]; *** End Patch Exit code: 0 Wall time: 0 seconds Output: Success. Updated the following files: M /work/sdiv_core/rtl/sdiv.sv
iverilog -g2012 -I sdiv_core/rtl -o /tmp/sdiv_compile.vvp sdiv_core/rtl/sdiv_top.sv sdiv_core/rtl/sdiv.sv
Chunk ID: c55934 Wall time: 0.0000 seconds Process exited with code 0 Original token count: 0 Output:
*** Begin Patch
*** Add File: /tmp/sdiv_tb.sv
+`timescale 1ns/1ps
+
+module tb;
+ localparam W = 16;
+ localparam N = 16;
+
+ logic clk = 1'b0;
+ logic rst_n;
+ logic start;
+ logic signed [W-1:0] dividend;
+ logic signed [W-1:0] divisor;
+ logic signed [W-1:0] quotient;
+ logic signed [W-1:0] remainder;
+ logic busy;
+ logic valid;
+
+ always #5 clk = ~clk;
+
+ sdiv dut (
+ .clk (clk),
+ .rst_n (rst_n),
+ .start (start),
+ .dividend (dividend),
+ .divisor (divisor),
+ .quotient (quotient),
+ .remainder (remainder),
+ .busy (busy),
+ .valid (valid)
+ );
+
+ task automatic fail(input string msg);
+ begin
+ $display("FAIL: %s at t=%0t", msg, $time);
+ $finish;
+ end
+ endtask
+
+ task automatic check_div(
+ input signed [W-1:0] a,
+ input signed [W-1:0] b,
+ input signed [W-1:0] exp_q,
+ input signed [W-1:0] exp_r
+ );
+ integer i;
+ begin
+ @(negedge clk);
+ dividend = a;
+ divisor = b;
+ start = 1'b1;
+
+ @(posedge clk);
+ #1;
+ if (busy !== 1'b0) fail("busy asserted on accept edge");
+ if (valid !== 1'b0) fail("valid asserted on accept edge");
+ start = 1'b0;
+ dividend = 16'sd1234;
+ divisor = -16'sd11;
+
+ for (i = 1; i < N; i = i + 1) begin
+ @(negedge clk);
+ if (i == 3) begin
+ start = 1'b1;
+ dividend = 16'sd55;
+ divisor = 16'sd5;
+ end else begin
+ start = 1'b0;
+ end
+
+ @(posedge clk);
+ #1;
+ if (busy !== 1'b1) fail("busy low during in-flight window");
+ if (valid !== 1'b0) fail("valid asserted before result edge");
+ end
+
+ @(negedge clk);
+ start = 1'b0;
+ @(posedge clk);
+ #1;
+ if (busy !== 1'b0) fail("busy overlapped result edge");
+ if (valid !== 1'b1) fail("valid missing on result edge");
+ if (quotient !== exp_q) fail("quotient mismatch");
+ if (remainder !== exp_r) fail("remainder mismatch");
+
+ @(posedge clk);
+ #1;
+ if (valid !== 1'b0) fail("valid wider than one cycle");
+ end
+ endtask
+
+ initial begin
+ rst_n = 1'b0;
+ start = 1'b0;
+ dividend = '0;
+ divisor = '0;
+
+ #2;
+ if (busy !== 1'b0 || valid !== 1'b0 || quotient !== '0 || remainder !== '0) begin
+ fail("async reset did not clear outputs");
+ end
+
+ repeat (2) @(posedge clk);
+ rst_n = 1'b1;
+
+ check_div( 16'sd7, 16'sd3, 16'sd2, 16'sd1);
+ check_div(-16'sd7, 16'sd3, -16'sd3, 16'sd2);
+ check_div( 16'sd7, -16'sd3, -16'sd3, -16'sd2);
+ check_div(-16'sd7, -16'sd3, 16'sd2, -16'sd1);
+ check_div( 16'sd9, 16'sd0, 16'sh7fff, 16'sd9);
+ check_div(-16'sd9, 16'sd0, 16'sh8000, -16'sd9);
+ check_div( 16'sh8000, -16'sd1, 16'sh7fff, 16'sd0);
+
+ $display("PASS");
+ $finish;
+ end
+endmodule
*** End Patch
Exit code: 0
Wall time: 0 seconds
Output:
Success. Updated the following files:
A /tmp/sdiv_tb.sv
iverilog -g2012 -I sdiv_core/rtl -o /tmp/sdiv_tb.vvp /tmp/sdiv_tb.sv sdiv_core/rtl/sdiv.sv && vvp /tmp/sdiv_tb.vvp
Chunk ID: 1fde37 Wall time: 0.0000 seconds Process exited with code 0 Original token count: 2 Output: PASS
*** Begin Patch
*** Update File: /tmp/sdiv_tb.sv
@@
task automatic check_div(
input signed [W-1:0] a,
input signed [W-1:0] b,
input signed [W-1:0] exp_q,
input signed [W-1:0] exp_r
@@
end
endtask
+
+ task automatic check_model(
+ input signed [W-1:0] a,
+ input signed [W-1:0] b
+ );
+ integer aa;
+ integer bb;
+ integer q;
+ integer r;
+ reg signed [W-1:0] exp_q;
+ reg signed [W-1:0] exp_r;
+ begin
+ aa = a;
+ bb = b;
+
+ if (b == 16'sd0) begin
+ exp_q = a[W-1] ? 16'sh8000 : 16'sh7fff;
+ exp_r = a;
+ end else if ((a == 16'sh8000) && (b == -16'sd1)) begin
+ exp_q = 16'sh7fff;
+ exp_r = 16'sd0;
+ end else begin
+ q = aa / bb;
+ r = aa % bb;
+
+ if ((r != 0) && ((aa < 0) != (bb < 0))) begin
+ q = q - 1;
+ r = r + bb;
+ end
+
+ exp_q = q;
+ exp_r = r;
+ end
+
+ check_div(a, b, exp_q, exp_r);
+ end
+ endtask
@@
- check_div( 16'sd7, 16'sd3, 16'sd2, 16'sd1);
- check_div(-16'sd7, 16'sd3, -16'sd3, 16'sd2);
- check_div( 16'sd7, -16'sd3, -16'sd3, -16'sd2);
- check_div(-16'sd7, -16'sd3, 16'sd2, -16'sd1);
- check_div( 16'sd9, 16'sd0, 16'sh7fff, 16'sd9);
- check_div(-16'sd9, 16'sd0, 16'sh8000, -16'sd9);
- check_div( 16'sh8000, -16'sd1, 16'sh7fff, 16'sd0);
+ check_model( 16'sd7, 16'sd3);
+ check_model(-16'sd7, 16'sd3);
+ check_model( 16'sd7, -16'sd3);
+ check_model(-16'sd7, -16'sd3);
+ check_model( 16'sd9, 16'sd0);
+ check_model(-16'sd9, 16'sd0);
+ check_model( 16'sh8000, -16'sd1);
+ check_model( 16'sh8000, 16'sd2);
+ check_model( 16'sh8000, -16'sd3);
+ check_model( 16'sh7fff, -16'sd7);
+
+ repeat (100) begin
+ check_model($urandom, $urandom);
+ end
$display("PASS");
*** End Patch
Exit code: 0
Wall time: 0 seconds
Output:
Success. Updated the following files:
M /tmp/sdiv_tb.sv
iverilog -g2012 -I sdiv_core/rtl -o /tmp/sdiv_tb.vvp /tmp/sdiv_tb.sv sdiv_core/rtl/sdiv.sv && vvp /tmp/sdiv_tb.vvp
Chunk ID: 90477c Wall time: 0.0000 seconds Process exited with code 0 Original token count: 2 Output: PASS
git diff -- sdiv_core/rtl/sdiv.sv
Chunk ID: ddf94d Wall time: 0.0000 seconds Process exited with code 127 Original token count: 11 Output: /bin/bash: line 1: git: command not found
git status --short
Chunk ID: 0bd47d Wall time: 0.0000 seconds Process exited with code 127 Original token count: 11 Output: /bin/bash: line 1: git: command not found
iverilog -g2012 -I sdiv_core/rtl -o /tmp/sdiv_compile.vvp sdiv_core/rtl/sdiv_top.sv sdiv_core/rtl/sdiv.sv
Chunk ID: 74b441 Wall time: 0.0000 seconds Process exited with code 0 Original token count: 0 Output:
sed -n '40,150p' sdiv_core/rtl/sdiv.sv
Chunk ID: 19e1d9
Wall time: 0.0000 seconds
Process exited with code 0
Original token count: 638
Output:
// ---------------------------------------------------------------------------
// State registers (provided). Latch the operands here on an accepted start and
// track the in-flight progress with the counter.
// ---------------------------------------------------------------------------
logic signed [W-1:0] a_q; // latched dividend
logic signed [W-1:0] b_q; // latched divisor
logic [7:0] cnt; // in-flight progress
logic run; // a divide is in progress
logic [2*W-1:0] result_w;
logic signed [W-1:0] result_q;
logic signed [W-1:0] result_r;
function automatic [2*W-1:0] floor_div_result;
input signed [W-1:0] a;
input signed [W-1:0] b;
reg signed [W-1:0] q_tmp;
reg signed [W-1:0] r_tmp;
reg signed [W-1:0] min_int;
reg signed [W-1:0] max_int;
reg signed [W-1:0] neg_one;
begin
min_int = {1'b1, {(W-1){1'b0}}};
max_int = {1'b0, {(W-1){1'b1}}};
neg_one = {W{1'b1}};
if (b == '0) begin
if (a[W-1]) begin
q_tmp = min_int;
end else begin
q_tmp = max_int;
end
r_tmp = a;
end else if ((a == min_int) && (b == neg_one)) begin
q_tmp = max_int;
r_tmp = '0;
end else begin
q_tmp = a / b;
r_tmp = a % b;
if ((r_tmp != '0) && (a[W-1] ^ b[W-1])) begin
q_tmp = q_tmp - {{(W-1){1'b0}}, 1'b1};
r_tmp = r_tmp + b;
end
end
floor_div_result = {q_tmp, r_tmp};
end
endfunction
assign result_w = floor_div_result(a_q, b_q);
assign result_q = result_w[2*W-1:W];
assign result_r = result_w[W-1:0];
always_ff @(posedge clk or negedge rst_n) begin
if (!rst_n) begin
a_q <= '0;
b_q <= '0;
cnt <= 8'd0;
run <= 1'b0;
busy <= 1'b0;
valid <= 1'b0;
quotient <= '0;
remainder <= '0;
end else begin
valid <= 1'b0;
if (run) begin
if (cnt == N) begin
run <= 1'b0;
cnt <= 8'd0;
busy <= 1'b0;
valid <= 1'b1;
quotient <= result_q;
remainder <= result_r;
end else begin
cnt <= cnt + 8'd1;
busy <= 1'b1;
end
end else if (start) begin
a_q <= dividend;
b_q <= divisor;
cnt <= 8'd1;
run <= 1'b1;
busy <= 1'b0;
end else begin
busy <= 1'b0;
end
end
end
endmodule : sdiv
No file changes, the agent left the workspace untouched.
Reproduce this trial: git checkout 2f94510 && PYTHONPATH=src python3 scripts/build_site.py , then open trial/trial_f935df2d17704991. Re-running the agent live requires EVAL_PLATFORM_ENABLE_OAUTH_SMOKE=1 and is non-deterministic.
Trial trial_f935df2d17704991 · verifier authoritative; classifier explanatory.