raygentop → comb_mult_add_16_mode · 20260912-174718-9ca8d3

benchadapt adaptation run · record at outputs/adapt/vtr_demo/raygentop/comb_mult_add_16_mode/20260912-174718-9ca8d3

run id: 20260912-174718-9ca8d3
started: 2026-09-12 17:47:18 -0700
finished: 2026-09-12 17:51:30 -0700
suite / design: vtr_demo / raygentop
target mode: comb_mult_add_16_mode
tier: needs restructuring (T2) — the region did not fit the mode as is
outcome: ACCEPTED — reviewer agent confirmed
editor attempts: 2 (editor calls against the one approved plan; record field iterations)
wall clock: 4m 12s (agents 2m 30s, VTR and other 1m 42s) [252.0 s total; 'other' is synthesis-only checks and framework time between calls]
models per role: planner: opencode-go/gpt-5.6-luna
reviewer:plan: opencode-go/gpt-5.6-luna
editor: opencode-go/gpt-5.6-luna
reviewer:acceptance: opencode-go/gpt-5.6-luna
VPR arguments: channel width 300 · device koios_extra_small · seed 1 (from run.json)
repo commit: 5cf3dac891e9 with uncommitted changes to tracked files
sandbox: not recorded (run made before the agent sandbox existed; its agent calls were not confined)
agent reads: editor read a behavioral model; editor read the framework repository (paths each agent named outside its own working directory, computed from the tool events; its own scratch excluded)
prompt set: not recorded (runs before 2026-09-13 carry no prompt-set hash)

exported 2026-09-14T18:11:54-07:00

Mode contract

recorded (outcome.json contract field)

Verbatim, as recorded with the run and sent to the agents.

Hard-block primitive to instantiate: `comb_mult_add_16`   (precision INT16)
  computes: out = ax*ay + bx
  input ports:  ax[16], ay[16], bx[32]
  output ports: result[64]
  arithmetic: the block's operands and result are signed two's complement. A design operand narrower than its port must be widened to the port width: zero-extended if the design treats it as unsigned, sign-extended if signed. An unsigned design operand as wide as its port has no exact representation on this block.
  timing: the block is combinational; `result` is valid in the same cycle the inputs are applied (no clock port).
  Wire EVERY operand of the fused region onto the input ports (name them exactly as above); drive the region's real consumer from the output port. Tie unused term ports to 0. Do not leave input ports unconnected.

Agent calls

6 call(s), in order

Call 1 · planner · opencode-go/gpt-5.6-luna · ok in 9 · out 434 · reasoning 1577 · cache read 12344 · cache write 10338 · 23.9 s

prompt

You are the Planner. Choose the best region(s) in raygentop.v to adapt so hard-block mode
'comb_mult_add_16_mode' (Hard-block primitive to instantiate: comb_mult_add_16 (precision INT16)
computes: out = ax*ay + bx
input ports: ax[16], ay[16], bx[32]
output ports: result[64]
arithmetic: the block's operands and result are signed two's complement. A design operand narrower than its port must be widened to the port width: zero-extended if the design treats it as unsigned, sign-extended if signed. An unsigned design operand as wide as its port has no exact representation on this block.
timing: the block is combinational; result is valid in the same cycle the inputs are applied (no clock port).
Wire EVERY operand of the fused region onto the input ports (name them exactly as above); drive the region's real consumer from the output port. Tie unused term ports to 0. Do not leave input ports unconnected.) is exercised, then write a concrete plan. Do NOT edit files —
output the header + plan only.

Pick the most REPRESENTATIVE mapping — arithmetic a real designer of THIS workload would actually
map to 'comb_mult_add_16_mode', never fabricated computation. For a sum-of-products / MAC mode you must
find product terms that ALREADY feed a COMMON reduction (a shared sum/accumulator); products that
feed SEPARATE outputs (e.g. distinct systolic-array elements) must NOT be fused. An isolated scalar
multiply is NOT a representative sum-of-products target. If nothing representative exists, output
TIER: NONE.

Classify the tier of the change you propose (a datatype/algorithm variant, T3, is out of scope —
do not propose one):

T1: Direct replacement: no change to the computed function or surrounding structure; no datatype change.
T2: Local restructuring only; preserve the region's function, role, and live consumers; no new operation/datatype family.

Read the source. Output EXACTLY this header (uppercase keys), then the plan:

TIER: T1 | T2 | NONE
REGIONS: <comma-separated region id(s)> # one id for a direct swap; N ids for a fusion
SHARED_REDUCTION: <the signal/module the terms feed> # or NONE for a single region
MAPPING: <which operands map to which of the mode's ports>
PLAN: <how the module's live inputs/outputs and downstream consumers are preserved; any introduced
operations/datatypes (should be NONE for T1/T2); and the main risks>

Read these files in this directory: raygentop.v

response

TIER: T2
REGIONS: bilinearintrp.$mul$raygentop.v:2874$348, bilinearintrp.$mul$raygentop.v:2875$349
SHARED_REDUCTION: bilinearintrp.r = i1r + i2r + i3r
MAPPING: ax=ul (zero-extended from 8 bits), ay=rul (zero-extended from 7 bits), bx=i2r (zero-extended from 15 bits); result replaces the i1r+i2r partial sum, with i3r retained.
PLAN: In bilinearintrp, preserve the registered inputs and the live r consumer, replacing the first two terms of the existing red-channel common reduction with one combinational comb_mult_add_16 instance. Feed its 64-bit result through the original-width truncation needed by the reduction, then add i3r as before. No introduced operations or datatypes beyond the required primitive; zero-extension preserves the unsigned source semantics. Main risks are signed-block interpretation and matching the original truncation width/timing.

tool events 3 recorded, 0 error(s)

grep completed module matmult|module bilinearintrp|assign|always

input

{
 "pattern": "module matmult|module bilinearintrp|assign|always",
 "path": "/home/samu/dev/llm-hardblocks/benchadapt/outputs/adapt/_scratch/oc_hl4mkacd/raygentop.v",
 "include": "raygentop.v"
}

output

Found 60 matches
/home/samu/dev/llm-hardblocks/benchadapt/outputs/adapt/_scratch/oc_hl4mkacd/raygentop.v:
  Line 159:     assign rgwant_CfgData = wantcfg ;

  Line 163:     always @(posedge clk)

  Line 175:     assign fbpage = ~page ;

  Line 187:     assign debugglobalreset = globalreset | go ;

  Line 189:     assign rgStat[30:0] = cyclecounter ;

  Line 204:     assign dataout = buff2 ;

  Line 206:     always @(posedge clk)

  Line 235:     always @(posedge clk)

  Line 250:     always @(state or trigger or count)

  Line 298: module matmult (Ax, Ay, Az, m11, m12, m13, m21, m22, m23, m31, m32, m33, Cx, Cy, Cz, clk);

  Line 333:     always @(posedge clk)

  Line 417:     assign we = ((CfgData_Ready == 1'b1) & (CfgAddr == 4'b1110)) ? 1'b1 : 1'b0 ;

  Line 419:     always @(posedge clk)

  Line 458:     always @(state or CfgData_Ready)

  Line 556: 	always @ (posedge clk)

  Line 672:     assign tm3_sram_data_out = tm3_sram_data_xhdl0;

  Line 674:     assign dataout = tm3_sram_data_in ;

  Line 675:     assign addr = tm3_sram_data_in[62:48] ;

  Line 676:     assign shadedata = tm3_sram_data_in ;

  Line 677:     assign texel = tm3_sram_data_in ;

  Line 679:     always @(posedge clk)

  Line 713:     always @(state or addr_ready or data_ready or waddress or datain or wantDir or 

  Line 1077:     always @(posedge clk)

  Line 1101:     always @(state or ack or as or rgDone)

  Line 1334:     assign busy = {busy1, busy0} ;

  Line 1336:     always @(posedge clk)

  Line 1374:     assign raygroup0 = {1'b0, groupID[0]} ;

  Line 1375:     assign raygroup1 = {1'b1, groupID[1]} ;

  Line 1376:     assign nextaddr = {2'b11, page, addrIn} ;

  Line 1377:     assign busyout = temp_busyout;

  Line 1378:     assign nas0 = temp_nas0;

  Line 1379:     assign nas1 = temp_nas1;

  Line 1381:     always @(state or go or ack or busy or dirReady or addr or count or loaded)

  Line 1719:     always @(posedge clk)

  Line 1784:     always @(state or rgResultReady or rgResultSource)

  Line 2015:     assign hita = (hit01a & process01) | (hit10a & ~process01) ;

  Line 2016:     assign hitb = (hit01b & process01) | (hit10b & ~process01) ;

  Line 2017:     assign hitc = (hit01c & process01) | (hit10c & ~process01) ;

  Line 2018:     assign texaddr = shadedata[59:56] ;

  Line 2019:     assign shiften01 = temp_shiften01;

  Line 2020:     assign shiften10 = temp_shiften10;

  Line 2021:     assign write = temp_write;

  Line 2024:     always @(posedge clk)

  Line 2118: // PAJ used to be assign, but weird error, so added as register   assign dataout = {1'b0, 

  Line 2120:     assign addrout = (process01 == 1'b1) ? addrout01 : addrout10 ;

  Line 2122:     always @(state or process01 or pending10 or ack or shadedataready or id01a or 

  Line 2667:     always @(dataline or texelselect)

  Line 2688:     assign r = {col16[15:10], 1'b0} ;

  Line 2689:     assign g = {col16[9:5], 2'b00} ;

  Line 2690:     assign b = {col16[4:0], 2'b00} ;

  Line 2709:     assign texelselect = ul[1:0] ;

  Line 2711:     always @(posedge clk)

  Line 2762:      module bilinearintrp (u01a, u01b, u01c, v01a, v01b, v01c, u10a, u10b, u10c, v10a, v10b, v10c, selectuv, ru, rv, rw, gu, gv, gw, bu, bv, bw, r, g, b, clk);

  Line 2818:         always @(selectuv or u01a or u01b or u01c or v01a or v01b or v01c or u10a or 

  Line 2860:         always @(posedge clk)

  Line 2884:         assign r = (i1r + i2r + i3r) ;

  Line 2885:         assign g = (i1g + i2g + i3g) ;

  Line 2886:         assign b = (i1b + i2b + i3b) ;

  Line 2907:     assign dataout = data0 ;

  Line 2909:     always @(posedge clk)

read completed /home/samu/dev/llm-hardblocks/benchadapt/outputs/adapt/_scratch/oc_hl4mkacd/raygentop.v

input

{
 "filePath": "/home/samu/dev/llm-hardblocks/benchadapt/outputs/adapt/_scratch/oc_hl4mkacd/raygentop.v",
 "offset": 298,
 "limit": 110
}

output

<path>/home/samu/dev/llm-hardblocks/benchadapt/outputs/adapt/_scratch/oc_hl4mkacd/raygentop.v</path>
<type>file</type>
<content>
298: module matmult (Ax, Ay, Az, m11, m12, m13, m21, m22, m23, m31, m32, m33, Cx, Cy, Cz, clk);
299: 
300:     input[16 - 1:0] Ax; 
301:     input[16 - 1:0] Ay; 
302:     input[16 - 1:0] Az; 
303:     input[16 - 1:0] m11; 
304:     input[16 - 1:0] m12; 
305: 
306:     input[16 - 1:0] m13; 
307:     input[16 - 1:0] m21; 
308:     input[16 - 1:0] m22; 
309:     input[16 - 1:0] m23; 
310:     input[16 - 1:0] m31; 
311:     input[16 - 1:0] m32; 
312:     input[16 - 1:0] m33; 
313:     output[16 - 1:0] Cx; 
314:     reg[16 - 1:0] Cx;
315:     output[16 - 1:0] Cy; 
316:     reg[16 - 1:0] Cy;
317:     output[16 - 1:0] Cz; 
318: 
319:     reg[16 - 1:0] Cz;
320:     input clk; 
321: 
322:     reg[16 + 16 - 1:0] am11; 
323:     reg[16 + 16 - 1:0] am12; 
324:     reg[16 + 16 - 1:0] am13; 
325:     reg[16 + 16 - 1:0] am21; 
326:     reg[16 + 16 - 1:0] am22; 
327:     reg[16 + 16 - 1:0] am23; 
328:     reg[16 + 16 - 1:0] am31; 
329:     reg[16 + 16 - 1:0] am32; 
330:     reg[16 + 16 - 1:0] am33; 
331: 
332: 
333:     always @(posedge clk)
334:     begin
335:        am11 <= Ax * m11 ; 
336:        am12 <= Ay * m12 ; 
337:        am13 <= Az * m13 ; 
338:        am21 <= Ax * m21 ; 
339:        am22 <= Ay * m22 ; 
340:        am23 <= Az * m23 ; 
341:        am31 <= Ax * m31 ; 
342:        am32 <= Ay * m32 ; 
343:        am33 <= Az * m33 ; 
344: 
345:        //      Cx <= (am11 + am12 + am13) (`widthA+`widthB-2 downto `widthB-1);
346:        //      Cy <= (am21 + am22 + am23) (`widthA+`widthB-2 downto `widthB-1);
347:        //      Cz <= (am31 + am32 + am33) (`widthA+`widthB-2 downto `widthB-1);
348:        Cx <= (am11[16+16-2:16-1] + am12[16+16-2:16-1] + am13[16+16-2:16-1]) ; 
349:        Cy <= (am21[16+16-2:16-1] + am22[16+16-2:16-1] + am23[16+16-2:16-1]); 
350:        Cz <= (am31[16+16-2:16-1] + am32[16+16-2:16-1] + am33[16+16-2:16-1]) ;  
351:     end 
352:  endmodule
353: 
354:     
355:     
356: 
357: module rgconfigmemory (CfgAddr, CfgData, CfgData_Ready, want_CfgData, origx, origy, origz, m11, m12, m13, m21, m22, m23, m31, m32, m33, bkcolour, texinfo, globalreset, clk);
358: 
359: 
360:     input[3:0] CfgAddr; 
361:     input[27:0] CfgData; 
362:     input CfgData_Ready; 
363:     output want_CfgData; 
364:     reg want_CfgData;
365:     output[27:0] origx; 
366:     reg[27:0] origx;
367:     output[27:0] origy; 
368:     reg[27:0] origy;
369:     output[27:0] origz; 
370:     reg[27:0] origz;
371:     output[15:0] m11; 
372:     reg[15:0] m11;
373:     output[15:0] m12; 
374:     reg[15:0] m12;
375:     output[15:0] m13; 
376:     reg[15:0] m13;
377:     output[15:0] m21; 
378:     reg[15:0] m21;
379:     output[15:0] m22; 
380:     reg[15:0] m22;
381:     output[15:0] m23; 
382:     reg[15:0] m23;
383:     output[15:0] m31; 
384:     reg[15:0] m31;
385:     output[15:0] m32; 
386:     reg[15:0] m32;
387:     output[15:0] m33; 
388:     reg[15:0] m33;
389:     output[20:0] bkcolour; 
390:     reg[20:0] bkcolour;
391:     output[20:0] texinfo; 
392: 
393:     wire[20:0] texinfo;
394:     input globalreset; 
395:     input clk; 
396: 
397:     reg state; 
398:     reg next_state; 
399:     wire we; 
400: 
401:     reg[27:0] temp_origx;
402:     reg[27:0] temp_origy;
403:     reg[27:0] temp_origz;
404:     reg[15:0] temp_m11;
405:     reg[15:0] temp_m12;
406:     reg[15:0] temp_m13;
407:     reg[15:0] temp_m21;

(Showing lines 298-407 of 2978. Use offset=408 to continue.)
</content>

read completed /home/samu/dev/llm-hardblocks/benchadapt/outputs/adapt/_scratch/oc_hl4mkacd/raygentop.v

input

{
 "filePath": "/home/samu/dev/llm-hardblocks/benchadapt/outputs/adapt/_scratch/oc_hl4mkacd/raygentop.v",
 "offset": 2762,
 "limit": 135
}

output

<path>/home/samu/dev/llm-hardblocks/benchadapt/outputs/adapt/_scratch/oc_hl4mkacd/raygentop.v</path>
<type>file</type>
<content>
2762:      module bilinearintrp (u01a, u01b, u01c, v01a, v01b, v01c, u10a, u10b, u10c, v10a, v10b, v10c, selectuv, ru, rv, rw, gu, gv, gw, bu, bv, bw, r, g, b, clk);
2763: 
2764:         input[7:0] u01a; 
2765:         input[7:0] u01b; 
2766:         input[7:0] u01c; 
2767:         input[7:0] v01a; 
2768:         input[7:0] v01b; 
2769:         input[7:0] v01c; 
2770:         input[7:0] u10a; 
2771:         input[7:0] u10b; 
2772:         input[7:0] u10c; 
2773:         input[7:0] v10a; 
2774:         input[7:0] v10b; 
2775:         input[7:0] v10c; 
2776:         input[2:0] selectuv; 
2777:         input[6:0] ru; 
2778:         input[6:0] rv; 
2779:         input[6:0] rw; 
2780:         input[6:0] gu; 
2781:         input[6:0] gv; 
2782:         input[6:0] gw; 
2783:         input[6:0] bu; 
2784:         input[6:0] bv; 
2785:         input[6:0] bw; 
2786:         output[6:0] r; 
2787:         wire[6:0] r;
2788:         output[6:0] g; 
2789:         wire[6:0] g;
2790:         output[6:0] b; 
2791:         wire[6:0] b;
2792:         input clk; 
2793: 
2794:         reg[7:0] u; 
2795:         reg[7:0] v; 
2796:         reg[7:0] ul; 
2797:         reg[7:0] vl; 
2798:         reg[7:0] wl; 
2799:         reg[14:0] i1b; 
2800:         reg[14:0] i2b; 
2801:         reg[14:0] i3b; 
2802:         reg[14:0] i1g; 
2803:         reg[14:0] i2g; 
2804:         reg[14:0] i3g; 
2805:         reg[14:0] i1r; 
2806:         reg[14:0] i2r; 
2807:         reg[14:0] i3r; 
2808:         reg[6:0] rul; 
2809:         reg[6:0] rvl; 
2810:         reg[6:0] rwl; 
2811:         reg[6:0] gul; 
2812:         reg[6:0] gvl; 
2813:         reg[6:0] gwl; 
2814:         reg[6:0] bul; 
2815:         reg[6:0] bvl; 
2816:         reg[6:0] bwl; 
2817: 
2818:         always @(selectuv or u01a or u01b or u01c or v01a or v01b or v01c or u10a or 
2819:                  u10b or u10c or v10a or v10b or v10c)
2820:         begin
2821:            case (selectuv)
2822:               3'b000 :
2823:                        begin
2824:                           u = u01a ; 
2825:                           v = v01a ; 
2826:                        end
2827:               3'b001 :
2828:                        begin
2829:                           u = u01b ; 
2830: 						 v = v01b ; 
2831:                        end
2832:               3'b010 :
2833:                        begin
2834:                           u = u01c ; 
2835:                           v = v01c ; 
2836:                        end
2837:               3'b100 :
2838:                        begin
2839:                           u = u10a ; 
2840:                           v = v10a ; 
2841:                        end
2842:               3'b101 :
2843:                        begin
2844:                           u = u10b ; 
2845:                           v = v10b ; 
2846:                        end
2847:               3'b110 :
2848:                        begin
2849:                           u = u10c ; 
2850:                           v = v10c ; 
2851:                        end
2852:               default :
2853:                        begin
2854:                           u = 0;
2855:                           v = 0;
2856:                        end
2857:            endcase 
2858:         end 
2859: 
2860:         always @(posedge clk)
2861:         begin
2862:            wl <= 8'b11111111 - u - v ; 
2863:            ul <= u ; 
2864:            vl <= v ; 
2865:            rul <= ru ; 
2866:            rvl <= rv ; 
2867:            rwl <= rw ; 
2868:            gul <= gu ; 
2869:            gvl <= gv ; 
2870:            gwl <= gw ; 
2871:            bul <= bu ; 
2872:            bvl <= bv ; 
2873:            bwl <= bw ; 
2874:            i1r <= ul * rul ; 
2875:            i2r <= vl * rvl ; 
2876:            i3r <= wl * rwl ; 
2877:            i1g <= ul * gul ; 
2878:            i2g <= vl * gv
…[truncated, 4634 chars total]

Call 2 · reviewer:plan · opencode-go/gpt-5.6-luna · ok in 9 · out 229 · reasoning 653 · cache read 11079 · cache write 8389 · 18.2 s

prompt

You are an INDEPENDENT, fair Reviewer. You did not write this plan. Judge it on merit.
Target mode: comb_mult_add_16_mode Tier: T2 Rule: Local restructuring only; preserve the region's function, role, and live consumers; no new operation/datatype family.
Region: bilinearintrp.$mul$raygentop.v:2874$348 (op 'multiply', datatype int8, consumers ['bilinearintrp']).
APPROVE the plan if it is correct and representative — a legitimate adaptation does not need to
be perfect, only sound. Do NOT demand rewrites for style, minor wording, or hypothetical concerns.
REVISE ONLY for a CONCRETE, specific violation you can name: (a) it changes the computed function
when the tier forbids it; (b) it introduces an operation/datatype absent from the design and not
admitted by the tier; (c) it fabricates terms to match a mode's n_terms (products that did not
exist / do not share a reduction); (d) it wires the mode to constants or a dead sink (mode island).
If none of these apply, APPROVE.
Your FIRST line must be exactly 'APPROVE' or 'REVISE', nothing else. If REVISE, the next lines
must name the specific violation (a/b/c/d) and what to change.

--- PLAN ---
TIER: T2
REGIONS: bilinearintrp.$mul$raygentop.v:2874$348, bilinearintrp.$mul$raygentop.v:2875$349
SHARED_REDUCTION: bilinearintrp.r = i1r + i2r + i3r
MAPPING: ax=ul (zero-extended from 8 bits), ay=rul (zero-extended from 7 bits), bx=i2r (zero-extended from 15 bits); result replaces the i1r+i2r partial sum, with i3r retained.
PLAN: In bilinearintrp, preserve the registered inputs and the live r consumer, replacing the first two terms of the existing red-channel common reduction with one combinational comb_mult_add_16 instance. Feed its 64-bit result through the original-width truncation needed by the reduction, then add i3r as before. No introduced operations or datatypes beyond the required primitive; zero-extension preserves the unsigned source semantics. Main risks are signed-block interpretation and matching the original truncation width/timing.

Read these files in this directory: raygentop.v

response

APPROVE

tool events 3 recorded, 0 error(s)

read completed /home/samu/dev/llm-hardblocks/benchadapt/outputs/adapt/_scratch/oc_wpo9845w/raygentop.v

input

{
 "filePath": "/home/samu/dev/llm-hardblocks/benchadapt/outputs/adapt/_scratch/oc_wpo9845w/raygentop.v",
 "offset": 2840,
 "limit": 80
}

output

<path>/home/samu/dev/llm-hardblocks/benchadapt/outputs/adapt/_scratch/oc_wpo9845w/raygentop.v</path>
<type>file</type>
<content>
2840:                           v = v10a ; 
2841:                        end
2842:               3'b101 :
2843:                        begin
2844:                           u = u10b ; 
2845:                           v = v10b ; 
2846:                        end
2847:               3'b110 :
2848:                        begin
2849:                           u = u10c ; 
2850:                           v = v10c ; 
2851:                        end
2852:               default :
2853:                        begin
2854:                           u = 0;
2855:                           v = 0;
2856:                        end
2857:            endcase 
2858:         end 
2859: 
2860:         always @(posedge clk)
2861:         begin
2862:            wl <= 8'b11111111 - u - v ; 
2863:            ul <= u ; 
2864:            vl <= v ; 
2865:            rul <= ru ; 
2866:            rvl <= rv ; 
2867:            rwl <= rw ; 
2868:            gul <= gu ; 
2869:            gvl <= gv ; 
2870:            gwl <= gw ; 
2871:            bul <= bu ; 
2872:            bvl <= bv ; 
2873:            bwl <= bw ; 
2874:            i1r <= ul * rul ; 
2875:            i2r <= vl * rvl ; 
2876:            i3r <= wl * rwl ; 
2877:            i1g <= ul * gul ; 
2878:            i2g <= vl * gvl ; 
2879:            i3g <= wl * gwl ; 
2880:            i1b <= ul * bul ; 
2881:            i2b <= vl * bvl ; 
2882:            i3b <= wl * bwl ;  
2883:         end 
2884:         assign r = (i1r + i2r + i3r) ;
2885:         assign g = (i1g + i2g + i3g) ;
2886:         assign b = (i1b + i2b + i3b) ;
2887:      endmodule
2888: 
2889: 
2890: 
2891: module fifo3 (datain, writeen, dataout, shiften, globalreset, clk);
2892: 
2893:     input[18 - 1:0] datain; 
2894:     input writeen; 
2895:     output[18 - 1:0] dataout; 
2896:     wire[18 - 1:0] dataout;
2897:     input shiften; 
2898:     input globalreset; 
2899:     input clk; 
2900: 
2901:     reg[18 - 1:0] data0; 
2902:     reg[18 - 1:0] data1; 
2903:     reg[18 - 1:0] data2; 
2904: 
2905:     reg[1:0] pos; 
2906: 
2907:     assign dataout = data0 ;
2908: 
2909:     always @(posedge clk)
2910:     begin
2911:        if (globalreset == 1'b1)
2912:        begin
2913:           pos <= 2'b00 ; 
2914:           data0 <= 0 ; 
2915:           data1 <= 0 ; 
2916:           data2 <= 0 ; 
2917:        end
2918:        else
2919:        begin

(Showing lines 2840-2919 of 2978. Use offset=2920 to continue.)
</content>

grep completed module bilinearintrp|reg\[.*i[123]r|wire\[.*i[123]r|comb_mult_add_16

input

{
 "pattern": "module bilinearintrp|reg\\[.*i[123]r|wire\\[.*i[123]r|comb_mult_add_16",
 "path": "/home/samu/dev/llm-hardblocks/benchadapt/outputs/adapt/_scratch/oc_wpo9845w/raygentop.v",
 "include": "raygentop.v"
}

output

Found 4 matches
/home/samu/dev/llm-hardblocks/benchadapt/outputs/adapt/_scratch/oc_wpo9845w/raygentop.v:
  Line 2762:      module bilinearintrp (u01a, u01b, u01c, v01a, v01b, v01c, u10a, u10b, u10c, v10a, v10b, v10c, selectuv, ru, rv, rw, gu, gv, gw, bu, bv, bw, r, g, b, clk);

  Line 2805:         reg[14:0] i1r; 

  Line 2806:         reg[14:0] i2r; 

  Line 2807:         reg[14:0] i3r;

read completed /home/samu/dev/llm-hardblocks/benchadapt/outputs/adapt/_scratch/oc_wpo9845w/raygentop.v

input

{
 "filePath": "/home/samu/dev/llm-hardblocks/benchadapt/outputs/adapt/_scratch/oc_wpo9845w/raygentop.v",
 "offset": 2700,
 "limit": 145
}

output

<path>/home/samu/dev/llm-hardblocks/benchadapt/outputs/adapt/_scratch/oc_wpo9845w/raygentop.v</path>
<type>file</type>
<content>
2700:     wire[1:0] texelselect;
2701: 
2702:     input[2:0] factor; 
2703:     input enable; 
2704:     input clk; 
2705: 
2706:     reg[6:0] ul; 
2707:     reg[6:0] vl; 
2708: 
2709:     assign texelselect = ul[1:0] ;
2710: 
2711:     always @(posedge clk)
2712:     begin
2713:        if (enable == 1'b1)
2714:        begin
2715:           ul <= u ; 
2716:           vl <= v ; 
2717:        end 
2718:        else
2719:        begin
2720:           ul <= ul ; 
2721:           vl <= vl ; 
2722:        end 
2723:        case (factor)
2724:           3'b000 :
2725:                    begin
2726:                       addr <= start + ({13'b0000000000000, ul[6:2]}) + ({11'b00000000000, vl}) ; 
2727:                    end
2728:           3'b001 :
2729:                    begin
2730:                       addr <= start + ({13'b0000000000000, ul[6:2]}) + ({10'b0000000000, vl, 1'b0}) ; 
2731: 
2732:                    end
2733:           3'b010 :
2734:                    begin
2735:                       addr <= start + ({13'b0000000000000, ul[6:2]}) + ({9'b000000000, vl, 2'b00}) ; 
2736:                    end
2737:           3'b011 :
2738:                    begin
2739:                       addr <= start + ({13'b0000000000000, ul[6:2]}) + ({8'b00000000, vl, 3'b000}) ; 
2740:                    end
2741:           3'b100 :
2742:                    begin
2743:                       addr <= start + ({13'b0000000000000, ul[6:2]}) + ({7'b0000000, vl, 4'b0000}) ; 
2744: 
2745:                    end
2746:           3'b101 :
2747:                    begin
2748:                       addr <= start + ({13'b0000000000000, ul[6:2]}) + ({6'b000000, vl, 5'b00000}) ; 
2749:                    end
2750:           3'b110 :
2751:                    begin
2752:                       addr <= start + ({13'b0000000000000, ul[6:2]}) + ({5'b00000, vl, 6'b000000}) ; 
2753:                    end
2754:           3'b111 :
2755:                    begin
2756:                       addr <= start + ({13'b0000000000000, ul[6:2]}) + ({4'b0000, vl, 7'b0000000}) ; 
2757: 
2758:                    end
2759:        endcase  
2760:     end 
2761:  endmodule
2762:      module bilinearintrp (u01a, u01b, u01c, v01a, v01b, v01c, u10a, u10b, u10c, v10a, v10b, v10c, selectuv, ru, rv, rw, gu, gv, gw, bu, bv, bw, r, g, b, clk);
2763: 
2764:         input[7:0] u01a; 
2765:         input[7:0] u01b; 
2766:         input[7:0] u01c; 
2767:         input[7:0] v01a; 
2768:         input[7:0] v01b; 
2769:         input[7:0] v01c; 
2770:         input[7:0] u10a; 
2771:         input[7:0] u10b; 
2772:         input[7:0] u10c; 
2773:         input[7:0] v10a; 
2774:         input[7:0] v10b; 
2775:         input[7:0] v10c; 
2776:         input[2:0] selectuv; 
2777:         input[6:0] ru; 
2778:         input[6:0] rv; 
2779:         input[6:0] rw; 
2780:         input[6:0] gu; 
2781:         input[6:0] gv; 
2782:         input[6:0] gw; 
2783:         input[6:0] bu; 
2784:         input[6:0] bv; 
2785:         input[6:0] bw; 
2786:         output[6:0] r; 
2787:         wire[6:0] r;
2788:         output[6:0] g; 
2789:         wire[6:0] g;
2790:         output[6:0] b; 
2791:         wire[6:0] b;
2792:         input clk; 
2793: 
2794:         reg[7:0] u; 
2795:         reg[7:0] v; 
2796:         reg[7:0] ul; 
2797:         reg[7:0] vl; 
2798:         reg[7:0] wl; 
2799:         reg[14:0] i1b; 
2800:         reg[14:0] i2b; 
2801:         reg[14:0] i3b; 
2802:         reg[14:0] i1g; 
2803:         reg[14:0] i2g; 
2804:         reg[14:0] i3g; 
2805:         reg[14:0] i1r; 
2806:         reg[14:0] i2r; 
2807:         reg[14:0] i3r; 
2808:         reg[6:0] rul; 
2809:         reg[6:0] rvl; 
2810:         reg[6:0] rwl; 
2811:         reg[6:0] gul; 
2812:         reg[6:0] gvl; 
2813:         reg[6:0] gwl; 
2814:         reg[6:0] bul; 
2815:         reg[6:0] bvl; 
2816:     
…[truncated, 5136 chars total]

Call 3 · editor · opencode-go/gpt-5.6-luna · ok in 39 · out 1525 · reasoning 1075 · cache read 110179 · cache write 12104 · 39.3 s · read outside the work dir

read outside the work dir: a behavioral model, the framework repository 2 path(s)

/home/samu/dev/llm-hardblocks/benchadapt
/home/samu/dev/llm-hardblocks/benchadapt/verify/models/comb_mult_add_16.v

prompt

Edit raygentop.v in this directory. Local restructuring: re-express the region (e.g. a multiply array + adder tree as a fused sum-of-products) to reach the mode; preserve the region's function and role, keep the rest of the design unchanged, wire the mode's real consumers.

Goal: rewrite the RTL so the hard-block mode 'comb_mult_add_16_mode' is exercised in the packed netlist,
doing real work, while preserving the design's behaviour and role.
Tier: T2

Hard-block primitive to instantiate: comb_mult_add_16 (precision INT16)
computes: out = ax*ay + bx
input ports: ax[16], ay[16], bx[32]
output ports: result[64]
arithmetic: the block's operands and result are signed two's complement. A design operand narrower than its port must be widened to the port width: zero-extended if the design treats it as unsigned, sign-extended if signed. An unsigned design operand as wide as its port has no exact representation on this block.
timing: the block is combinational; result is valid in the same cycle the inputs are applied (no clock port).
Wire EVERY operand of the fused region onto the input ports (name them exactly as above); drive the region's real consumer from the output port. Tie unused term ports to 0. Do not leave input ports unconnected.

This is a MULTI-REGION fusion: aggregate these 1 product regions — bilinearintrp.$mul$raygentop.v:2874$348, bilinearintrp.$mul$raygentop.v:2875$349 — which already feed the common reduction 'bilinearintrp.r = i1r + i2r + i3r', into one 1-term 'comb_mult_add_16_mode' instance. Fuse only these existing terms; do not invent new ones.
Rules: edit Verilog source only; preserve the module's live inputs/outputs and its downstream
consumers; do not introduce operations or datatypes absent from the design unless this tier
admits a variant; keep the surrounding design unchanged for T1/T2. Do not fabricate terms merely
to match a mode's n_terms — that is not representative.

Follow this approved plan:
TIER: T2
REGIONS: bilinearintrp.$mul$raygentop.v:2874$348, bilinearintrp.$mul$raygentop.v:2875$349
SHARED_REDUCTION: bilinearintrp.r = i1r + i2r + i3r
MAPPING: ax=ul (zero-extended from 8 bits), ay=rul (zero-extended from 7 bits), bx=i2r (zero-extended from 15 bits); result replaces the i1r+i2r partial sum, with i3r retained.
PLAN: In bilinearintrp, preserve the registered inputs and the live r consumer, replacing the first two terms of the existing red-channel common reduction with one combinational comb_mult_add_16 instance. Feed its 64-bit result through the original-width truncation needed by the reduction, then add i3r as before. No introduced operations or datatypes beyond the required primitive; zero-extension preserves the unsigned source semantics. Main risks are signed-block interpretation and matching the original truncation width/timing.

Work iteratively IN THIS SESSION: after each edit, run bash check.sh raygentop.v and read its output; if it does not synthesize, fix the RTL and check again. Do NOT run place-and-route or any VTR/vpr command — that is verified separately. Stop when check.sh reports it synthesizes cleanly with the intended arithmetic.

response

Edited raygentop.v:

Added comb_mult_add_16 for the red-channel partial sum.
Zero-extended ul, rul, and i2r to the required port widths.
Truncated the 64-bit result back to 15 bits.
Preserved i3r and the live r consumer.
Removed the replaced i1r multiply.

Verification: bash check.sh raygentop.v reports OK: synthesizes cleanly.

tool events 16 recorded, 0 error(s)

todowrite completed

input

{
 "todos": [
  {
   "content": "Inspect raygentop.v reduction and surrounding declarations",
   "status": "in_progress",
   "priority": "high"
  },
  {
   "content": "Replace the two selected products with comb_mult_add_16 wiring",
   "status": "pending",
   "priority": "high"
  },
  {
   "content": "Run check.sh and fix any synthesis issues",
   "status": "pending",
   "priority": "high"
  }
 ]
}

output

[
  {
    "content": "Inspect raygentop.v reduction and surrounding declarations",
    "status": "in_progress",
    "priority": "high"
  },
  {
    "content": "Replace the two selected products with comb_mult_add_16 wiring",
    "status": "pending",
    "priority": "high"
  },
  {
    "content": "Run check.sh and fix any synthesis issues",
    "status": "pending",
    "priority": "high"
  }
]

glob completed raygentop.v

input

{
 "pattern": "raygentop.v"
}

output

/home/samu/dev/llm-hardblocks/benchadapt/outputs/adapt/vtr_demo/raygentop/comb_mult_add_16_mode/20260912-174718-9ca8d3/edit/raygentop/raygentop.v

grep completed comb_mult_add_16

input

{
 "pattern": "comb_mult_add_16",
 "include": "*.v"
}

output

No files found

grep completed i1r|i2r|i3r|bilinearintrp

input

{
 "pattern": "i1r|i2r|i3r|bilinearintrp",
 "include": "raygentop.v"
}

output

Found 9 matches
/home/samu/dev/llm-hardblocks/benchadapt/outputs/adapt/vtr_demo/raygentop/comb_mult_add_16_mode/20260912-174718-9ca8d3/edit/raygentop/raygentop.v:
  Line 2012:     bilinearintrp bilinearimp (u01a, u01b, u01c, v01a, v01b, v01c, u10a, u10b, u10c, v10a, v10b, v10c, selectuv, shadedata[41:35], shadedata[62:56], shadedata[20:14], shadedata[34:28], shadedata[55:49], shadedata[13:7], shadedata[27:21], shadedata[48:42], shadedata[6:0], blr, blg, blb, clk); 

  Line 2762:      module bilinearintrp (u01a, u01b, u01c, v01a, v01b, v01c, u10a, u10b, u10c, v10a, v10b, v10c, selectuv, ru, rv, rw, gu, gv, gw, bu, bv, bw, r, g, b, clk);

  Line 2805:         reg[14:0] i1r; 

  Line 2806:         reg[14:0] i2r; 

  Line 2807:         reg[14:0] i3r; 

  Line 2874:            i1r <= ul * rul ; 

  Line 2875:            i2r <= vl * rvl ; 

  Line 2876:            i3r <= wl * rwl ; 

  Line 2884:         assign r = (i1r + i2r + i3r) ;

read completed /home/samu/dev/llm-hardblocks/benchadapt/outputs/adapt/vtr_demo/raygentop/comb_mult_add_16_mode/2026…

input

{
 "filePath": "/home/samu/dev/llm-hardblocks/benchadapt/outputs/adapt/vtr_demo/raygentop/comb_mult_add_16_mode/20260912-174718-9ca8d3/edit/raygentop/check.sh",
 "limit": 200
}

output

<path>/home/samu/dev/llm-hardblocks/benchadapt/outputs/adapt/vtr_demo/raygentop/comb_mult_add_16_mode/20260912-174718-9ca8d3/edit/raygentop/check.sh</path>
<type>file</type>
<content>
1: #!/usr/bin/env bash
2: # Inner-loop check: syntax + synthesis + arithmetic census. NOT place-and-route.
3: # usage: bash check.sh <file.v>
4: set -u
5: f="${1:?usage: check.sh <file.v>}"
6: out="$(yosys -q -p "read_verilog $f; hierarchy -auto-top; proc; opt; stat" 2>&1)"
7: if [ $? -ne 0 ]; then
8:   echo "FAIL: does not synthesize"
9:   echo "$out" | tail -25
10:   exit 1
11: fi
12: echo "OK: synthesizes cleanly"
13: echo "$out" | grep -E '^\s+[0-9]+\s+\$(mul|add|sub|mem|memrd|memwr|dff|mux)' || true

(End of file - total 13 lines)
</content>

read completed /home/samu/dev/llm-hardblocks/benchadapt/outputs/adapt/vtr_demo/raygentop/comb_mult_add_16_mode/2026…

input

{
 "filePath": "/home/samu/dev/llm-hardblocks/benchadapt/outputs/adapt/vtr_demo/raygentop/comb_mult_add_16_mode/20260912-174718-9ca8d3/edit/raygentop/raygentop.v",
 "offset": 2760,
 "limit": 140
}

output

<path>/home/samu/dev/llm-hardblocks/benchadapt/outputs/adapt/vtr_demo/raygentop/comb_mult_add_16_mode/20260912-174718-9ca8d3/edit/raygentop/raygentop.v</path>
<type>file</type>
<content>
2760:     end 
2761:  endmodule
2762:      module bilinearintrp (u01a, u01b, u01c, v01a, v01b, v01c, u10a, u10b, u10c, v10a, v10b, v10c, selectuv, ru, rv, rw, gu, gv, gw, bu, bv, bw, r, g, b, clk);
2763: 
2764:         input[7:0] u01a; 
2765:         input[7:0] u01b; 
2766:         input[7:0] u01c; 
2767:         input[7:0] v01a; 
2768:         input[7:0] v01b; 
2769:         input[7:0] v01c; 
2770:         input[7:0] u10a; 
2771:         input[7:0] u10b; 
2772:         input[7:0] u10c; 
2773:         input[7:0] v10a; 
2774:         input[7:0] v10b; 
2775:         input[7:0] v10c; 
2776:         input[2:0] selectuv; 
2777:         input[6:0] ru; 
2778:         input[6:0] rv; 
2779:         input[6:0] rw; 
2780:         input[6:0] gu; 
2781:         input[6:0] gv; 
2782:         input[6:0] gw; 
2783:         input[6:0] bu; 
2784:         input[6:0] bv; 
2785:         input[6:0] bw; 
2786:         output[6:0] r; 
2787:         wire[6:0] r;
2788:         output[6:0] g; 
2789:         wire[6:0] g;
2790:         output[6:0] b; 
2791:         wire[6:0] b;
2792:         input clk; 
2793: 
2794:         reg[7:0] u; 
2795:         reg[7:0] v; 
2796:         reg[7:0] ul; 
2797:         reg[7:0] vl; 
2798:         reg[7:0] wl; 
2799:         reg[14:0] i1b; 
2800:         reg[14:0] i2b; 
2801:         reg[14:0] i3b; 
2802:         reg[14:0] i1g; 
2803:         reg[14:0] i2g; 
2804:         reg[14:0] i3g; 
2805:         reg[14:0] i1r; 
2806:         reg[14:0] i2r; 
2807:         reg[14:0] i3r; 
2808:         reg[6:0] rul; 
2809:         reg[6:0] rvl; 
2810:         reg[6:0] rwl; 
2811:         reg[6:0] gul; 
2812:         reg[6:0] gvl; 
2813:         reg[6:0] gwl; 
2814:         reg[6:0] bul; 
2815:         reg[6:0] bvl; 
2816:         reg[6:0] bwl; 
2817: 
2818:         always @(selectuv or u01a or u01b or u01c or v01a or v01b or v01c or u10a or 
2819:                  u10b or u10c or v10a or v10b or v10c)
2820:         begin
2821:            case (selectuv)
2822:               3'b000 :
2823:                        begin
2824:                           u = u01a ; 
2825:                           v = v01a ; 
2826:                        end
2827:               3'b001 :
2828:                        begin
2829:                           u = u01b ; 
2830: 						 v = v01b ; 
2831:                        end
2832:               3'b010 :
2833:                        begin
2834:                           u = u01c ; 
2835:                           v = v01c ; 
2836:                        end
2837:               3'b100 :
2838:                        begin
2839:                           u = u10a ; 
2840:                           v = v10a ; 
2841:                        end
2842:               3'b101 :
2843:                        begin
2844:                           u = u10b ; 
2845:                           v = v10b ; 
2846:                        end
2847:               3'b110 :
2848:                        begin
2849:                           u = u10c ; 
2850:                           v = v10c ; 
2851:                        end
2852:               default :
2853:                        begin
2854:                           u = 0;
2855:                           v = 0;
2856:                        end
2857:            endcase 
2858:         end 
2859: 
2860:         always @(posedge clk)
2861:         begin
2862:            wl <= 8'b11111111 - u - v ; 
2863:            ul <= u ; 
2864:            vl <= v ; 
2865:            rul <= ru ; 
2866:            rvl <= rv ; 
2867:            rwl <= rw ; 
2868:            gul <= gu ; 
2869:            gvl <= gv ; 
2870:            gwl <= gw ; 
2871:            bul <= bu ; 
2872:            bvl <= bv ; 
2873:            bwl <= bw ; 
2874:            i1r <= ul * rul ; 
2875:            i2r <= vl * rvl ; 
2876:        
…[truncated, 4802 chars total]

grep completed module comb_|comb_mult

input

{
 "pattern": "module comb_|comb_mult",
 "path": "/home/samu/dev/llm-hardblocks/benchadapt",
 "include": "*.v"
}

output

Found 7 matches
/home/samu/dev/llm-hardblocks/benchadapt/verify/models/comb_sop_2_18.v:
  Line 15: //          comb_mult_add_16); no T_setup / T_clock_to_Q -> latency 0 cycles, combinational

  Line 24: module comb_sop_2_18 (


/home/samu/dev/llm-hardblocks/benchadapt/verify/models/comb_mult_add_16.v:
  Line 1: // comb_mult_add_16.v — behavioral model of comb_mult_add_16, a PROJECT-ADDED combinational

  Line 2: // integer multiply-add hard-block mode (arch mode comb_mult_add_16_mode). This mode does

  Line 4: // (benchadapt/arch/k6FracN10LB_mem20K_complexDSP_customSB_22nm.xml, the comb_mult_add_16

  Line 5: // <model> and the comb_mult_add_16_mode <mode>) and in configs/target/comb_mult_add.json.

  Line 21: module comb_mult_add_16 (

read completed /home/samu/dev/llm-hardblocks/benchadapt/verify/models/comb_mult_add_16.v

input

{
 "filePath": "/home/samu/dev/llm-hardblocks/benchadapt/verify/models/comb_mult_add_16.v",
 "limit": 100
}

output

<path>/home/samu/dev/llm-hardblocks/benchadapt/verify/models/comb_mult_add_16.v</path>
<type>file</type>
<content>
1: // comb_mult_add_16.v — behavioral model of comb_mult_add_16, a PROJECT-ADDED combinational
2: // integer multiply-add hard-block mode (arch mode comb_mult_add_16_mode). This mode does
3: // not exist upstream; it is defined in the working arch copy
4: // (benchadapt/arch/k6FracN10LB_mem20K_complexDSP_customSB_22nm.xml, the comb_mult_add_16
5: // <model> and the comb_mult_add_16_mode <mode>) and in configs/target/comb_mult_add.json.
6: // There is no silicon, no COFFE characterization, and no Koios soft substitute behind it;
7: // the three project files ARE the definition, and this model is written to match them.
8: //
9: // KNOWN (from the arch working copy, by construction):
10: //   ports  ax[16], ay[16], bx[32] -> result[64]; no other ports; no clock on the model
11: //          or the pb_type
12: //   timing delay_constant only (2.14e-9, copied from mult_add_mode_18_19_36);
13: //          no T_setup / T_clock_to_Q  -> latency 0 cycles, combinational
14: //   result = ax*ay + bx (metadata expression), precision INT16
15: //
16: // ASSUMPTION (a definition choice, not a measurement; the arch cannot express it):
17: //   S1 signedness — signed (two's complement) on ax, ay, bx, as the task defines the
18: //      mode. Modeled with signed operands throughout: the 16x16 product is 32 bits, the
19: //      sum is formed at 64 bits signed, and result is that sum with no truncation
20: //      (|ax*ay + bx| < 2^32, so the 64-bit result is exact).
21: module comb_mult_add_16 (
22:     input  [15:0] ax,
23:     input  [15:0] ay,
24:     input  [31:0] bx,
25:     output [63:0] result
26: );
27: 
28:     wire signed [15:0] sax = ax;                                     // S1
29:     wire signed [15:0] say = ay;
30:     wire signed [31:0] sbx = bx;
31:     wire signed [31:0] prod = sax * say;                             // 16x16 -> 32, exact
32:     wire signed [63:0] sum  = prod + sbx;                            // 64-bit signed, exact
33: 
34:     assign result = sum;
35: 
36: endmodule

(End of file - total 36 lines)
</content>

todowrite completed

input

{
 "todos": [
  {
   "content": "Inspect raygentop.v reduction and surrounding declarations",
   "status": "completed",
   "priority": "high"
  },
  {
   "content": "Replace the two selected products with comb_mult_add_16 wiring",
   "status": "in_progress",
   "priority": "high"
  },
  {
   "content": "Run check.sh and fix any synthesis issues",
   "status": "pending",
   "priority": "high"
  }
 ]
}

output

[
  {
    "content": "Inspect raygentop.v reduction and surrounding declarations",
    "status": "completed",
    "priority": "high"
  },
  {
    "content": "Replace the two selected products with comb_mult_add_16 wiring",
    "status": "in_progress",
    "priority": "high"
  },
  {
    "content": "Run check.sh and fix any synthesis issues",
    "status": "pending",
    "priority": "high"
  }
]

apply_patch completed

input

{
 "patchText": "*** Begin Patch\n*** Update File: /home/samu/dev/llm-hardblocks/benchadapt/outputs/adapt/vtr_demo/raygentop/comb_mult_add_16_mode/20260912-174718-9ca8d3/edit/raygentop/raygentop.v\n@@\n-         reg[14:0] i1r; \n          reg[14:0] i2r; \n          reg[14:0] i3r; \n@@\n          reg[6:0] bvl; \n          reg[6:0] bwl; \n+         wire[63:0] fused_i12r_result;\n+         wire[14:0] fused_i12r;\n+\n+         comb_mult_add_16 fused_i12r_block (\n+            .ax ({8'b0, ul}),\n+            .ay ({9'b0, rul}),\n+            .bx ({17'b0, i2r}),\n+            .result (fused_i12r_result)\n+         );\n+         assign fused_i12r = fused_i12r_result[14:0];\n@@\n-            i1r <= ul * rul ; \n             i2r <= vl * rvl ; \n@@\n-         assign r = (i1r + i2r + i3r) ;\n+         assign r = (fused_i12r + i3r) ;\n*** End Patch"
}

output

Success. Updated the following files:
M outputs/adapt/vtr_demo/raygentop/comb_mult_add_16_mode/20260912-174718-9ca8d3/edit/raygentop/raygentop.v

bash completed bash check.sh raygentop.v

input

{
 "command": "bash check.sh raygentop.v",
 "workdir": "/home/samu/dev/llm-hardblocks/benchadapt/outputs/adapt/vtr_demo/raygentop/comb_mult_add_16_mode/20260912-174718-9ca8d3/edit/raygentop",
 "timeout": 120000
}

output

OK: synthesizes cleanly

bash completed git diff -- raygentop.v

input

{
 "command": "git diff -- raygentop.v",
 "workdir": "/home/samu/dev/llm-hardblocks/benchadapt/outputs/adapt/vtr_demo/raygentop/comb_mult_add_16_mode/20260912-174718-9ca8d3/edit/raygentop",
 "timeout": 120000
}

output

(no output)

grep completed i1r|fused_i12r|comb_mult_add_16

input

{
 "pattern": "i1r|fused_i12r|comb_mult_add_16",
 "path": "/home/samu/dev/llm-hardblocks/benchadapt/outputs/adapt/vtr_demo/raygentop/comb_mult_add_16_mode/20260912-174718-9ca8d3/edit/raygentop",
 "include": "raygentop.v"
}

output

Found 6 matches
/home/samu/dev/llm-hardblocks/benchadapt/outputs/adapt/vtr_demo/raygentop/comb_mult_add_16_mode/20260912-174718-9ca8d3/edit/raygentop/raygentop.v:
  Line 2816:          wire[63:0] fused_i12r_result;

  Line 2817:          wire[14:0] fused_i12r;

  Line 2819:          comb_mult_add_16 fused_i12r_block (

  Line 2823:             .result (fused_i12r_result)

  Line 2825:          assign fused_i12r = fused_i12r_result[14:0];

  Line 2892:          assign r = (fused_i12r + i3r) ;

bash completed git status --short -- raygentop.v && git diff --no-ext-diff --stat -- raygentop.v

input

{
 "command": "git status --short -- raygentop.v && git diff --no-ext-diff --stat -- raygentop.v",
 "workdir": "/home/samu/dev/llm-hardblocks/benchadapt/outputs/adapt/vtr_demo/raygentop/comb_mult_add_16_mode/20260912-174718-9ca8d3/edit/raygentop",
 "timeout": 120000
}

output

(no output)

bash completed git rev-parse --show-toplevel && git status --short

input

{
 "command": "git rev-parse --show-toplevel && git status --short",
 "workdir": "/home/samu/dev/llm-hardblocks/benchadapt/outputs/adapt/vtr_demo/raygentop/comb_mult_add_16_mode/20260912-174718-9ca8d3/edit/raygentop",
 "timeout": 120000
}

output

/home/samu/dev/llm-hardblocks/benchadapt
 M ../../../../../../../../README.md
 M ../../../../../../../../configs/arch/complexDSP.yaml
 M ../../../../../../../../src/adapt/loop.py
 M ../../../../../../../../src/adapt/opencode.py
 M ../../../../../../../../src/cli.py
 M ../../../../../../../../src/config.py
 M ../../../../../../../../src/runinfo.py
 M ../../../../../../../../src/suite/detect.py
 M ../../../../../../../../src/verify/gates.py
 M ../../../../../../../../src/verify/report.py
 M ../../../../../../../../src/verify/synth.py
 M ../../../../../../../../src/verify/vtr.py
?? ../../../../../../../../src/export.py

todowrite completed

input

{
 "todos": [
  {
   "content": "Inspect raygentop.v reduction and surrounding declarations",
   "status": "completed",
   "priority": "high"
  },
  {
   "content": "Replace the two selected products with comb_mult_add_16 wiring",
   "status": "completed",
   "priority": "high"
  },
  {
   "content": "Run check.sh and fix any synthesis issues",
   "status": "completed",
   "priority": "high"
  }
 ]
}

output

[
  {
    "content": "Inspect raygentop.v reduction and surrounding declarations",
    "status": "completed",
    "priority": "high"
  },
  {
    "content": "Replace the two selected products with comb_mult_add_16 wiring",
    "status": "completed",
    "priority": "high"
  },
  {
    "content": "Run check.sh and fix any synthesis issues",
    "status": "completed",
    "priority": "high"
  }
]

Call 4 · reviewer:acceptance · opencode-go/gpt-5.6-luna · ok in 9 · out 249 · reasoning 669 · cache read 13656 · cache write 7882 · 16.8 s

prompt

You are an INDEPENDENT ACCEPTANCE REVIEWER — the gate of record for whether an adapted design is
a LEGITIMATE member of its benchmark suite. You did NOT plan or write this edit. Judge only what
is in front of you. Your verdict is final and fully automated; there is no human backstop, so err
toward rejecting anything you cannot positively ground.

FRAMING — refute by default. Your job is to find why this adaptation is NOT a legitimate suite
member. Assume it is contrived until the evidence shows otherwise. A rewrite that merely "makes
the mode appear in the netlist" is NOT sufficient — the mode must do real work the original
workload actually implied.

This case has already passed the deterministic structural, provenance, and (for T3) evidence
gates — do not re-litigate those mechanically. Your judgement is the legitimacy call they
cannot make: would a real designer of THIS workload ship this, or is it a mode-island / fabricated
dot-product / gratuitous variant dressed up to pass?

REJECT if any of these hold:

(a) FABRICATED TERMS — a fused N-term product/sum aggregates operands that did not genuinely
share a reduction in the original; the "dot product" is manufactured to fill the mode's arity.
(b) MODE ISLAND / DEAD WORK — the mode's result does not flow to the design's real outputs, or
is wired to constants / a sink that the rest of the design ignores.
(c) ROLE BREAK — the adapted region no longer plays the workload role the witness recorded
(e.g. a control-path multiply repurposed as a fake datapath MAC).
(d) UNGROUNDED VARIANT (T3) — the precision/algorithm variant is not the one the cited sibling
design evidences; the adaptation drifts to a workload character the suite does not contain.

ACCEPT if the adaptation is sound: the mapped arithmetic genuinely existed, the fused terms really
shared a reduction, the mode's output drives the original consumers, and the workload role is
preserved. Legitimate adaptation need not be optimal — only real.

You MUST ground your verdict: cite the specific preserved role (from the witness), the real
region(s)/reduction the mode maps onto, and — for T3 — the sibling evidence axis. A verdict you
cannot ground is a REJECT.

--- ADAPTATION UNDER REVIEW ---
Target mode: comb_mult_add_16_mode Tier: T2
Region witness (the 'before'): role 'bilinearintrp', operation 'multiply', datatype int8,
regions ['bilinearintrp.$mul$raygentop.v:2874$348', 'bilinearintrp.$mul$raygentop.v:2875$349'], shared reduction 'bilinearintrp.r = i1r + i2r + i3r', downstream consumers ['bilinearintrp'].
Manifest (the 'after'): introduced operations [], introduced datatypes
[], intended consumers ['bilinearintrp'].
Deterministic gates: PASSED. Evidence floor: no variant introduced (T1/T2).
Packed netlist: target mode present = True.

--- EDIT DIFF ---
--- outputs/adapt/vtr_demo/raygentop/comb_mult_add_16_mode/20260912-174718-9ca8d3/edit/.pristine/raygentop/raygentop.v 2026-08-16 18:14:11.414163698 -0700
+++ outputs/adapt/vtr_demo/raygentop/comb_mult_add_16_mode/20260912-174718-9ca8d3/edit/raygentop/raygentop.v 2026-09-12 17:48:23.656850362 -0700
@@ -2802,9 +2802,8 @@
reg[14:0] i1g;
reg[14:0] i2g;
reg[14:0] i3g;

reg[14:0] i1r;
reg[14:0] i2r;
reg[14:0] i3r;
reg[14:0] i2r;
reg[14:0] i3r;
reg[6:0] rul;
reg[6:0] rvl;
reg[6:0] rwl;
@@ -2812,8 +2811,18 @@
reg[6:0] gvl;
reg[6:0] gwl;
reg[6:0] bul;
reg[6:0] bvl;
reg[6:0] bwl;
reg[6:0] bvl;
reg[6:0] bwl;
wire[63:0] fused_i12r_result;
wire[14:0] fused_i12r;
+
comb_mult_add_16 fused_i12r_block (
.ax ({8'b0, ul}),
.ay ({9'b0, rul}),
.bx ({17'b0, i2r}),
.result (fused_i12r_result)
);
assign fused_i12r = fused_i12r_result[14:0];

always @(selectuv or u01a or u01b or u01c or v01a or v01b or v01c or u10a or
u10b or u10c or v10a or v10b or v10c)
@@ -2871,8 +2880,7 @@
bul <= bu ;
bvl <= bv ;
bwl <= bw ;

i1r <= ul * rul ;
i2r <= vl * rvl ;
i2r <= vl * rvl ;
i3r <= wl * rwl ;
i1g <= ul * gul ;
i2g <= vl * gvl ;
@@ -2881,7 +2889,7 @@
i2b <= vl * bvl ;
i3b <= wl * bwl ;
end
assign r = (i1r + i2r + i3r) ;
assign r = (fused_i12r + i3r) ;
assign g = (i1g + i2g + i3g) ;
assign b = (i1b + i2b + i3b) ;
endmodule
@@ -2975,4 +2983,3 @@
end
end
endmodule
-

Your FIRST line must be exactly 'ACCEPT' or 'REJECT'. Then, on the following lines, state the
grounding (role preserved / real region mapped / sibling evidence) or the specific violation
(a/b/c/d) and what makes it illegitimate.

Read these files in this directory: raygentop.v

response

REJECT

The witness role is bilinear interpolation (bilinearintrp), and the real reduction is i1r + i2r + i3r driving output r. However, the adaptation breaks that role: fused_i12r computes the current ul * rul, while i2r is a registered prior-cycle product. It therefore does not preserve the original aligned reduction represented by i1r + i2r + i3r; the mode performs a temporally mismatched sum rather than the original interpolation computation.

tool events 2 recorded, 0 error(s)

read completed /home/samu/dev/llm-hardblocks/benchadapt/outputs/adapt/_scratch/oc_usjcin3g/raygentop.v

input

{
 "filePath": "/home/samu/dev/llm-hardblocks/benchadapt/outputs/adapt/_scratch/oc_usjcin3g/raygentop.v",
 "offset": 2780,
 "limit": 125
}

output

<path>/home/samu/dev/llm-hardblocks/benchadapt/outputs/adapt/_scratch/oc_usjcin3g/raygentop.v</path>
<type>file</type>
<content>
2780:         input[6:0] gu; 
2781:         input[6:0] gv; 
2782:         input[6:0] gw; 
2783:         input[6:0] bu; 
2784:         input[6:0] bv; 
2785:         input[6:0] bw; 
2786:         output[6:0] r; 
2787:         wire[6:0] r;
2788:         output[6:0] g; 
2789:         wire[6:0] g;
2790:         output[6:0] b; 
2791:         wire[6:0] b;
2792:         input clk; 
2793: 
2794:         reg[7:0] u; 
2795:         reg[7:0] v; 
2796:         reg[7:0] ul; 
2797:         reg[7:0] vl; 
2798:         reg[7:0] wl; 
2799:         reg[14:0] i1b; 
2800:         reg[14:0] i2b; 
2801:         reg[14:0] i3b; 
2802:         reg[14:0] i1g; 
2803:         reg[14:0] i2g; 
2804:         reg[14:0] i3g; 
2805:          reg[14:0] i2r; 
2806:          reg[14:0] i3r; 
2807:         reg[6:0] rul; 
2808:         reg[6:0] rvl; 
2809:         reg[6:0] rwl; 
2810:         reg[6:0] gul; 
2811:         reg[6:0] gvl; 
2812:         reg[6:0] gwl; 
2813:         reg[6:0] bul; 
2814:          reg[6:0] bvl; 
2815:          reg[6:0] bwl; 
2816:          wire[63:0] fused_i12r_result;
2817:          wire[14:0] fused_i12r;
2818: 
2819:          comb_mult_add_16 fused_i12r_block (
2820:             .ax ({8'b0, ul}),
2821:             .ay ({9'b0, rul}),
2822:             .bx ({17'b0, i2r}),
2823:             .result (fused_i12r_result)
2824:          );
2825:          assign fused_i12r = fused_i12r_result[14:0];
2826: 
2827:         always @(selectuv or u01a or u01b or u01c or v01a or v01b or v01c or u10a or 
2828:                  u10b or u10c or v10a or v10b or v10c)
2829:         begin
2830:            case (selectuv)
2831:               3'b000 :
2832:                        begin
2833:                           u = u01a ; 
2834:                           v = v01a ; 
2835:                        end
2836:               3'b001 :
2837:                        begin
2838:                           u = u01b ; 
2839: 						 v = v01b ; 
2840:                        end
2841:               3'b010 :
2842:                        begin
2843:                           u = u01c ; 
2844:                           v = v01c ; 
2845:                        end
2846:               3'b100 :
2847:                        begin
2848:                           u = u10a ; 
2849:                           v = v10a ; 
2850:                        end
2851:               3'b101 :
2852:                        begin
2853:                           u = u10b ; 
2854:                           v = v10b ; 
2855:                        end
2856:               3'b110 :
2857:                        begin
2858:                           u = u10c ; 
2859:                           v = v10c ; 
2860:                        end
2861:               default :
2862:                        begin
2863:                           u = 0;
2864:                           v = 0;
2865:                        end
2866:            endcase 
2867:         end 
2868: 
2869:         always @(posedge clk)
2870:         begin
2871:            wl <= 8'b11111111 - u - v ; 
2872:            ul <= u ; 
2873:            vl <= v ; 
2874:            rul <= ru ; 
2875:            rvl <= rv ; 
2876:            rwl <= rw ; 
2877:            gul <= gu ; 
2878:            gvl <= gv ; 
2879:            gwl <= gw ; 
2880:            bul <= bu ; 
2881:            bvl <= bv ; 
2882:            bwl <= bw ; 
2883:             i2r <= vl * rvl ; 
2884:            i3r <= wl * rwl ; 
2885:            i1g <= ul * gul ; 
2886:            i2g <= vl * gvl ; 
2887:            i3g <= wl * gwl ; 
2888:            i1b <= ul * bul ; 
2889:            i2b <= vl * bvl ; 
2890:            i3b <= wl * bwl ;  
2891:         end 
2892:          assign r = (fused_i12r + i3r) ;
2893:         assign g = (i1g + i2g + i3g) ;
2894:         assign b = (i1b + i2b + i3b) ;
2895:      endmodule
2896: 
2897: 
2898: 
2899: module fifo3 (
…[truncated, 4268 chars total]

grep completed module comb_mult_add_16|comb_mult_add_16

input

{
 "pattern": "module comb_mult_add_16|comb_mult_add_16",
 "path": "/home/samu/dev/llm-hardblocks/benchadapt/outputs/adapt/_scratch/oc_usjcin3g",
 "include": "raygentop.v"
}

output

Found 1 matches
/home/samu/dev/llm-hardblocks/benchadapt/outputs/adapt/_scratch/oc_usjcin3g/raygentop.v:
  Line 2819:          comb_mult_add_16 fused_i12r_block (

Call 5 · editor · opencode-go/gpt-5.6-luna · ok in 15 · out 626 · reasoning 2675 · cache read 73242 · cache write 5060 · 36.3 s

prompt

Goal: rewrite the RTL so the hard-block mode 'comb_mult_add_16_mode' is exercised in the packed netlist,
doing real work, while preserving the design's behaviour and role.
Tier: T2

Previous attempt failed. Fix:
Acceptance reviewer REJECTED this adaptation as not a legitimate suite member:
REJECT

response

Fixed the cycle alignment by adding registered delayed operands for the fused red-channel product. The primitive now computes the same-cycle-aligned i1r + i2r partial sum, with i3r retained.

Verification: bash check.sh raygentop.v reports OK: synthesizes cleanly.

tool events 4 recorded, 0 error(s)

apply_patch completed

input

{
 "patchText": "*** Begin Patch\n*** Update File: /home/samu/dev/llm-hardblocks/benchadapt/outputs/adapt/vtr_demo/raygentop/comb_mult_add_16_mode/20260912-174718-9ca8d3/edit/raygentop/raygentop.v\n@@\n          reg[6:0] bul; \n          reg[6:0] bvl; \n          reg[6:0] bwl; \n+         reg[7:0] ul_fused; \n+         reg[6:0] rul_fused; \n          wire[63:0] fused_i12r_result;\n          wire[14:0] fused_i12r;\n \n          comb_mult_add_16 fused_i12r_block (\n-            .ax ({8'b0, ul}),\n-            .ay ({9'b0, rul}),\n+            .ax ({8'b0, ul_fused}),\n+            .ay ({9'b0, rul_fused}),\n@@\n             ul <= u ; \n             vl <= v ; \n             rul <= ru ; \n+            ul_fused <= ul ;\n+            rul_fused <= rul ;\n             rvl <= rv ; \n*** End Patch"
}

output

Success. Updated the following files:
M outputs/adapt/vtr_demo/raygentop/comb_mult_add_16_mode/20260912-174718-9ca8d3/edit/raygentop/raygentop.v

bash completed bash check.sh raygentop.v

input

{
 "command": "bash check.sh raygentop.v",
 "workdir": "/home/samu/dev/llm-hardblocks/benchadapt/outputs/adapt/vtr_demo/raygentop/comb_mult_add_16_mode/20260912-174718-9ca8d3/edit/raygentop",
 "timeout": 120000
}

output

OK: synthesizes cleanly

grep completed \bul\b|\brul\b

input

{
 "pattern": "\\bul\\b|\\brul\\b",
 "path": "/home/samu/dev/llm-hardblocks/benchadapt/outputs/adapt/vtr_demo/raygentop/comb_mult_add_16_mode/20260912-174718-9ca8d3/edit/raygentop",
 "include": "raygentop.v"
}

output

Found 20 matches
/home/samu/dev/llm-hardblocks/benchadapt/outputs/adapt/vtr_demo/raygentop/comb_mult_add_16_mode/20260912-174718-9ca8d3/edit/raygentop/raygentop.v:
  Line 2706:     reg[6:0] ul; 

  Line 2709:     assign texelselect = ul[1:0] ;

  Line 2715:           ul <= u ; 

  Line 2720:           ul <= ul ; 

  Line 2726:                       addr <= start + ({13'b0000000000000, ul[6:2]}) + ({11'b00000000000, vl}) ; 

  Line 2730:                       addr <= start + ({13'b0000000000000, ul[6:2]}) + ({10'b0000000000, vl, 1'b0}) ; 

  Line 2735:                       addr <= start + ({13'b0000000000000, ul[6:2]}) + ({9'b000000000, vl, 2'b00}) ; 

  Line 2739:                       addr <= start + ({13'b0000000000000, ul[6:2]}) + ({8'b00000000, vl, 3'b000}) ; 

  Line 2743:                       addr <= start + ({13'b0000000000000, ul[6:2]}) + ({7'b0000000, vl, 4'b0000}) ; 

  Line 2748:                       addr <= start + ({13'b0000000000000, ul[6:2]}) + ({6'b000000, vl, 5'b00000}) ; 

  Line 2752:                       addr <= start + ({13'b0000000000000, ul[6:2]}) + ({5'b00000, vl, 6'b000000}) ; 

  Line 2756:                       addr <= start + ({13'b0000000000000, ul[6:2]}) + ({4'b0000, vl, 7'b0000000}) ; 

  Line 2796:         reg[7:0] ul; 

  Line 2807:         reg[6:0] rul; 

  Line 2874:             ul <= u ; 

  Line 2876:             rul <= ru ; 

  Line 2877:             ul_fused <= ul ;

  Line 2878:             rul_fused <= rul ;

  Line 2889:            i1g <= ul * gul ; 

  Line 2892:            i1b <= ul * bul ;

todowrite completed

input

{
 "todos": [
  {
   "content": "Inspect the prior adaptation and identify the cycle-alignment issue",
   "status": "completed",
   "priority": "high"
  },
  {
   "content": "Add aligned registered operands while preserving the fused red reduction",
   "status": "completed",
   "priority": "high"
  },
  {
   "content": "Run check.sh and verify synthesis succeeds",
   "status": "completed",
   "priority": "high"
  }
 ]
}

output

[
  {
    "content": "Inspect the prior adaptation and identify the cycle-alignment issue",
    "status": "completed",
    "priority": "high"
  },
  {
    "content": "Add aligned registered operands while preserving the fused red reduction",
    "status": "completed",
    "priority": "high"
  },
  {
    "content": "Run check.sh and verify synthesis succeeds",
    "status": "completed",
    "priority": "high"
  }
]

Call 6 · reviewer:acceptance · opencode-go/gpt-5.6-luna · ok in 12 · out 307 · reasoning 527 · cache read 58862 · cache write 28630 · 15.4 s

prompt

REJECT if any of these hold:

(a) FABRICATED TERMS — a fused N-term product/sum aggregates operands that did not genuinely
share a reduction in the original; the "dot product" is manufactured to fill the mode's arity.
(b) MODE ISLAND / DEAD WORK — the mode's result does not flow to the design's real outputs, or
is wired to constants / a sink that the rest of the design ignores.
(c) ROLE BREAK — the adapted region no longer plays the workload role the witness recorded
(e.g. a control-path multiply repurposed as a fake datapath MAC).
(d) UNGROUNDED VARIANT (T3) — the precision/algorithm variant is not the one the cited sibling
design evidences; the adaptation drifts to a workload character the suite does not contain.

--- EDIT DIFF ---
--- outputs/adapt/vtr_demo/raygentop/comb_mult_add_16_mode/20260912-174718-9ca8d3/edit/.pristine/raygentop/raygentop.v 2026-08-16 18:14:11.414163698 -0700
+++ outputs/adapt/vtr_demo/raygentop/comb_mult_add_16_mode/20260912-174718-9ca8d3/edit/raygentop/raygentop.v 2026-09-12 17:50:13.728720338 -0700
@@ -2802,18 +2802,29 @@
reg[14:0] i1g;
reg[14:0] i2g;
reg[14:0] i3g;

reg[14:0] i1r;
reg[14:0] i2r;
reg[14:0] i3r;
reg[14:0] i2r;
reg[14:0] i3r;
reg[6:0] rul;
reg[6:0] rvl;
reg[6:0] rwl;
reg[6:0] gul;
reg[6:0] gvl;
reg[6:0] gwl;
reg[6:0] bul;
reg[6:0] bvl;
reg[6:0] bwl;
reg[6:0] bul;
reg[6:0] bvl;
reg[6:0] bwl;
reg[7:0] ul_fused;
reg[6:0] rul_fused;
wire[63:0] fused_i12r_result;
wire[14:0] fused_i12r;
+
comb_mult_add_16 fused_i12r_block (
.ax ({8'b0, ul_fused}),
.ay ({9'b0, rul_fused}),
.bx ({17'b0, i2r}),
.result (fused_i12r_result)
);
assign fused_i12r = fused_i12r_result[14:0];

always @(selectuv or u01a or u01b or u01c or v01a or v01b or v01c or u10a or
u10b or u10c or v10a or v10b or v10c)
@@ -2860,10 +2871,12 @@
always @(posedge clk)
begin
wl <= 8'b11111111 - u - v ;

ul <= u ;
vl <= v ;
rul <= ru ;
rvl <= rv ;
ul <= u ;
vl <= v ;
rul <= ru ;
ul_fused <= ul ;
rul_fused <= rul ;
rvl <= rv ;
rwl <= rw ;
gul <= gu ;
gvl <= gv ;
@@ -2871,8 +2884,7 @@
bul <= bu ;
bvl <= bv ;
bwl <= bw ;
i1r <= ul * rul ;
i2r <= vl * rvl ;
i2r <= vl * rvl ;
i3r <= wl * rwl ;
i1g <= ul * gul ;
i2g <= vl * gvl ;
@@ -2881,7 +2893,7 @@
i2b <= vl * bvl ;
i3b <= wl * bwl ;
end
assign r = (i1r + i2r + i3r) ;
assign r = (fused_i12r + i3r) ;
assign g = (i1g + i2g + i3g) ;
assign b = (i1b + i2b + i3b) ;
endmodule
@@ -2975,4 +2987,3 @@
end
end
endmodule
-

Read these files in this directory: raygentop.v

response

Role preserved: bilinearintrp performs the original red-channel bilinear interpolation multiply/reduction.

The fused mode maps the real reduction i1r + i2r: ul * rul and vl * rvl are genuine terms in the original r = i1r + i2r + i3r computation. Its result remains on the real output path via r = fused_i12r + i3r (lines 2887–2897), consumed by the enclosing interpolation logic. No T3 sibling evidence is applicable.

tool events 3 recorded, 0 error(s)

read completed /home/samu/dev/llm-hardblocks/benchadapt/outputs/adapt/_scratch/oc_hmbt0tb2/raygentop.v

input

{
 "filePath": "/home/samu/dev/llm-hardblocks/benchadapt/outputs/adapt/_scratch/oc_hmbt0tb2/raygentop.v"
}

output

<path>/home/samu/dev/llm-hardblocks/benchadapt/outputs/adapt/_scratch/oc_hmbt0tb2/raygentop.v</path>
<type>file</type>
<content>
1:  module paj_raygentop_hierarchy_no_mem (rgwant_addr, rgwant_data, rgread_ready, rgaddr_ready, rgdata_ready, rgwant_read, rgdatain, rgdataout, rgaddrin, rgCont, rgStat, rgCfgData, rgwant_CfgData, rgCfgData_ready, tm3_sram_data_in, tm3_sram_data_out, tm3_sram_addr, tm3_sram_we, tm3_sram_oe, tm3_sram_adsp, clk, fbdata, fbdatavalid, fbnextscanline, raygroup01, raygroupvalid01, busy01, raygroup10, raygroupvalid10, busy10, globalreset, rgData, rgAddr, rgWE, rgAddrValid, rgDone, rgResultData, rgResultReady, rgResultSource);
2: 
3:     output rgwant_addr; 
4:     wire rgwant_addr;
5:     output rgwant_data; 
6:     wire rgwant_data;
7:     output rgread_ready; 
8:     wire rgread_ready;
9:     input rgaddr_ready; 
10:     input rgdata_ready; 
11: 
12:     input rgwant_read; 
13:     input[63:0] rgdatain; 
14:     output[63:0] rgdataout; 
15:     wire[63:0] rgdataout;
16:     input[17:0] rgaddrin; 
17:     input[31:0] rgCont; 
18:     output[31:0] rgStat; 
19:     wire[31:0] rgStat;
20:     input[31:0] rgCfgData; 
21:     output rgwant_CfgData; 
22:     wire rgwant_CfgData;
23:     input rgCfgData_ready; 
24: 
25:     input[63:0] tm3_sram_data_in; 
26:     wire[63:0] tm3_sram_data_in;
27:     output[63:0] tm3_sram_data_out; 
28:     wire[63:0] tm3_sram_data_out;
29:     wire[63:0] tm3_sram_data_xhdl0;
30:     output[18:0] tm3_sram_addr; 
31:     wire[18:0] tm3_sram_addr;
32:     output[7:0] tm3_sram_we; 
33:     wire[7:0] tm3_sram_we;
34:     output[1:0] tm3_sram_oe; 
35:     wire[1:0] tm3_sram_oe;
36:     output tm3_sram_adsp; 
37:     wire tm3_sram_adsp;
38:     input clk; 
39: 
40:     output[63:0] fbdata; 
41:     wire[63:0] fbdata;
42:     output fbdatavalid; 
43:     wire fbdatavalid;
44:     input fbnextscanline; 
45:     output[1:0] raygroup01; 
46:     wire[1:0] raygroup01;
47:     output raygroupvalid01; 
48:     wire raygroupvalid01;
49:     input busy01; 
50:     output[1:0] raygroup10; 
51:     wire[1:0] raygroup10;
52: 
53:     output raygroupvalid10; 
54:     wire raygroupvalid10;
55:     input busy10; 
56:     input globalreset; 
57:     output[31:0] rgData; 
58:     wire[31:0] rgData;
59:     output[3:0] rgAddr; 
60:     wire[3:0] rgAddr;
61:     output[2:0] rgWE; 
62:     wire[2:0] rgWE;
63:     output rgAddrValid; 
64:     wire rgAddrValid;
65: 
66:     input rgDone; 
67:     input[31:0] rgResultData; 
68:     input rgResultReady; 
69:     input[1:0] rgResultSource; 
70: 
71:     wire[2:0] statepeek2; 
72:     wire as01; 
73:     wire ack01; 
74: 
75:     wire[3:0] addr01; 
76:     wire[47:0] dir01; 
77:     wire[47:0] dir; 
78:     wire[47:0] sramdatal; 
79:     wire wantDir; 
80:     wire dirReady; 
81:     wire dirReadyl; 
82:     wire[14:0] address; 
83:     wire[30:0] cyclecounter; 
84: 
85:     wire nas01; 
86:     wire nas10; 
87:     wire go; 
88:     reg page; 
89:     wire[2:0] statepeekct; 
90:     // result Signals
91:     wire valid01; 
92:     wire valid10; 
93:     wire[15:0] id01a; 
94:     wire[15:0] id01b; 
95:     wire[15:0] id01c; 
96:     wire[15:0] id10a; 
97: 
98:     wire[15:0] id10b; 
99:     wire[15:0] id10c; 
100:     wire hit01a; 
101:     wire hit01b; 
102:     wire hit01c; 
103:     wire hit10a; 
104:     wire hit10b; 
105:     wire hit10c; 
106:     wire[7:0] u01a; 
107:     wire[7:0] u01b; 
108:     wire[7:0] u01c; 
109:     wire[7:0] v01a; 
110: 
111:     wire[7:0] v01b; 
112:     wire[7:0] v01c; 
113:     wire[7:0] u10a; 
114:     wire[7:0] u10b; 
115:     wire[7:0] u10c; 
116:     wire[7:0] v10a; 
117:     wire[7:0] v10b; 
118:     wire[7:0] v10c; 
119:     wire wantwriteback; 
120:     wire writebackack; 
121:     wire[63:0] writebackdata; 
122:     wire[17:0] writebackaddr; 
123: 
124:     wire[17:0] nextaddr01; 
125:     // Shading Signals
126:     wire[63:0] shadedata; 
127:     wire[15:0] triID; 
128:     wire wantshadedata; 
129:     wire shadedat
…[truncated, 61096 chars total]

grep completed bilinearintrp|fused_i12r|comb_mult_add

input

{
 "pattern": "bilinearintrp|fused_i12r|comb_mult_add",
 "path": "/home/samu/dev/llm-hardblocks/benchadapt/outputs/adapt/_scratch/oc_hmbt0tb2",
 "include": "raygentop.v"
}

output

Found 8 matches
/home/samu/dev/llm-hardblocks/benchadapt/outputs/adapt/_scratch/oc_hmbt0tb2/raygentop.v:
  Line 2012:     bilinearintrp bilinearimp (u01a, u01b, u01c, v01a, v01b, v01c, u10a, u10b, u10c, v10a, v10b, v10c, selectuv, shadedata[41:35], shadedata[62:56], shadedata[20:14], shadedata[34:28], shadedata[55:49], shadedata[13:7], shadedata[27:21], shadedata[48:42], shadedata[6:0], blr, blg, blb, clk); 

  Line 2762:      module bilinearintrp (u01a, u01b, u01c, v01a, v01b, v01c, u10a, u10b, u10c, v10a, v10b, v10c, selectuv, ru, rv, rw, gu, gv, gw, bu, bv, bw, r, g, b, clk);

  Line 2818:          wire[63:0] fused_i12r_result;

  Line 2819:          wire[14:0] fused_i12r;

  Line 2821:          comb_mult_add_16 fused_i12r_block (

  Line 2825:             .result (fused_i12r_result)

  Line 2827:          assign fused_i12r = fused_i12r_result[14:0];

  Line 2896:          assign r = (fused_i12r + i3r) ;

read completed /home/samu/dev/llm-hardblocks/benchadapt/outputs/adapt/_scratch/oc_hmbt0tb2/raygentop.v

input

{
 "filePath": "/home/samu/dev/llm-hardblocks/benchadapt/outputs/adapt/_scratch/oc_hmbt0tb2/raygentop.v",
 "offset": 2760,
 "limit": 160
}

output

<path>/home/samu/dev/llm-hardblocks/benchadapt/outputs/adapt/_scratch/oc_hmbt0tb2/raygentop.v</path>
<type>file</type>
<content>
2760:     end 
2761:  endmodule
2762:      module bilinearintrp (u01a, u01b, u01c, v01a, v01b, v01c, u10a, u10b, u10c, v10a, v10b, v10c, selectuv, ru, rv, rw, gu, gv, gw, bu, bv, bw, r, g, b, clk);
2763: 
2764:         input[7:0] u01a; 
2765:         input[7:0] u01b; 
2766:         input[7:0] u01c; 
2767:         input[7:0] v01a; 
2768:         input[7:0] v01b; 
2769:         input[7:0] v01c; 
2770:         input[7:0] u10a; 
2771:         input[7:0] u10b; 
2772:         input[7:0] u10c; 
2773:         input[7:0] v10a; 
2774:         input[7:0] v10b; 
2775:         input[7:0] v10c; 
2776:         input[2:0] selectuv; 
2777:         input[6:0] ru; 
2778:         input[6:0] rv; 
2779:         input[6:0] rw; 
2780:         input[6:0] gu; 
2781:         input[6:0] gv; 
2782:         input[6:0] gw; 
2783:         input[6:0] bu; 
2784:         input[6:0] bv; 
2785:         input[6:0] bw; 
2786:         output[6:0] r; 
2787:         wire[6:0] r;
2788:         output[6:0] g; 
2789:         wire[6:0] g;
2790:         output[6:0] b; 
2791:         wire[6:0] b;
2792:         input clk; 
2793: 
2794:         reg[7:0] u; 
2795:         reg[7:0] v; 
2796:         reg[7:0] ul; 
2797:         reg[7:0] vl; 
2798:         reg[7:0] wl; 
2799:         reg[14:0] i1b; 
2800:         reg[14:0] i2b; 
2801:         reg[14:0] i3b; 
2802:         reg[14:0] i1g; 
2803:         reg[14:0] i2g; 
2804:         reg[14:0] i3g; 
2805:          reg[14:0] i2r; 
2806:          reg[14:0] i3r; 
2807:         reg[6:0] rul; 
2808:         reg[6:0] rvl; 
2809:         reg[6:0] rwl; 
2810:         reg[6:0] gul; 
2811:         reg[6:0] gvl; 
2812:         reg[6:0] gwl; 
2813:          reg[6:0] bul; 
2814:          reg[6:0] bvl; 
2815:          reg[6:0] bwl; 
2816:          reg[7:0] ul_fused; 
2817:          reg[6:0] rul_fused; 
2818:          wire[63:0] fused_i12r_result;
2819:          wire[14:0] fused_i12r;
2820: 
2821:          comb_mult_add_16 fused_i12r_block (
2822:             .ax ({8'b0, ul_fused}),
2823:             .ay ({9'b0, rul_fused}),
2824:             .bx ({17'b0, i2r}),
2825:             .result (fused_i12r_result)
2826:          );
2827:          assign fused_i12r = fused_i12r_result[14:0];
2828: 
2829:         always @(selectuv or u01a or u01b or u01c or v01a or v01b or v01c or u10a or 
2830:                  u10b or u10c or v10a or v10b or v10c)
2831:         begin
2832:            case (selectuv)
2833:               3'b000 :
2834:                        begin
2835:                           u = u01a ; 
2836:                           v = v01a ; 
2837:                        end
2838:               3'b001 :
2839:                        begin
2840:                           u = u01b ; 
2841: 						 v = v01b ; 
2842:                        end
2843:               3'b010 :
2844:                        begin
2845:                           u = u01c ; 
2846:                           v = v01c ; 
2847:                        end
2848:               3'b100 :
2849:                        begin
2850:                           u = u10a ; 
2851:                           v = v10a ; 
2852:                        end
2853:               3'b101 :
2854:                        begin
2855:                           u = u10b ; 
2856:                           v = v10b ; 
2857:                        end
2858:               3'b110 :
2859:                        begin
2860:                           u = u10c ; 
2861:                           v = v10c ; 
2862:                        end
2863:               default :
2864:                        begin
2865:                           u = 0;
2866:                           v = 0;
2867:                        end
2868:            endcase 
2869:         end 
2870: 
2871:         always @(posedge clk)
2872:         begin
2873:            wl <= 8'b11111111 - u - v ; 
2874:             ul <= u ; 
2875: 
…[truncated, 5398 chars total]

The edit

+25 / −14 lines, 20 whitespace-only

From edit.diff in the run dir: the final edited file against the pristine source. Lines that changed only in whitespace (20) are folded behind a marker; open it to see them.

--- outputs/adapt/vtr_demo/raygentop/comb_mult_add_16_mode/20260912-174718-9ca8d3/edit/.pristine/raygentop/raygentop.v 2026-08-16 18:14:11.414163698 -0700

+++ outputs/adapt/vtr_demo/raygentop/comb_mult_add_16_mode/20260912-174718-9ca8d3/edit/raygentop/raygentop.v 2026-09-12 17:50:13.728720338 -0700

@@ -2802,18 +2802,29 @@

reg[14:0] i1g;

reg[14:0] i2g;

reg[14:0] i3g;

- reg[14:0] i1r;

4 whitespace-only lines (indentation or trailing spaces changed, text identical)

- reg[14:0] i2r;

- reg[14:0] i3r;

+ reg[14:0] i2r;

+ reg[14:0] i3r;

reg[6:0] rul;

reg[6:0] rvl;

reg[6:0] rwl;

reg[6:0] gul;

reg[6:0] gvl;

reg[6:0] gwl;

6 whitespace-only lines (indentation or trailing spaces changed, text identical)

- reg[6:0] bul;

- reg[6:0] bvl;

- reg[6:0] bwl;

+ reg[6:0] bul;

+ reg[6:0] bvl;

+ reg[6:0] bwl;

+ reg[7:0] ul_fused;

+ reg[6:0] rul_fused;

+ wire[63:0] fused_i12r_result;

+ wire[14:0] fused_i12r;

+ comb_mult_add_16 fused_i12r_block (

+ .ax ({8'b0, ul_fused}),

+ .ay ({9'b0, rul_fused}),

+ .bx ({17'b0, i2r}),

+ .result (fused_i12r_result)

+ );

+ assign fused_i12r = fused_i12r_result[14:0];

always @(selectuv or u01a or u01b or u01c or v01a or v01b or v01c or u10a or

u10b or u10c or v10a or v10b or v10c)

@@ -2860,10 +2871,12 @@

always @(posedge clk)

begin

wl <= 8'b11111111 - u - v ;

7 whitespace-only lines (indentation or trailing spaces changed, text identical)

- ul <= u ;

- vl <= v ;

- rul <= ru ;

- rvl <= rv ;

+ ul <= u ;

+ vl <= v ;

+ rul <= ru ;

+ ul_fused <= ul ;

+ rul_fused <= rul ;

1 whitespace-only line (indentation or trailing spaces changed, text identical)

+ rvl <= rv ;

rwl <= rw ;

gul <= gu ;

gvl <= gv ;

@@ -2871,8 +2884,7 @@

bul <= bu ;

bvl <= bv ;

bwl <= bw ;

- i1r <= ul * rul ;

2 whitespace-only lines (indentation or trailing spaces changed, text identical)

- i2r <= vl * rvl ;

+ i2r <= vl * rvl ;

i3r <= wl * rwl ;

i1g <= ul * gul ;

i2g <= vl * gvl ;

@@ -2881,7 +2893,7 @@

i2b <= vl * bvl ;

i3b <= wl * bwl ;

end

- assign r = (i1r + i2r + i3r) ;

+ assign r = (fused_i12r + i3r) ;

assign g = (i1g + i2g + i3g) ;

assign b = (i1b + i2b + i3b) ;

endmodule

@@ -2975,4 +2987,3 @@

end

endmodule

Verification

2 editor attempt(s) · recorded per attempt · final: accepted

Recorded. Written by the loop as each editor attempt ended (iterations.json, copied into outcome.json as iteration_log); nothing here is reconstructed.

Editor attempt 1 · repair 2026-09-12 17:48:41 -0700 → 2026-09-12 17:49:51 -0700

editor call: call 3 · status ok · changed the file: True · diff against pristine non-empty: True · denied/failed tool calls: 0
synthesis-only check: ran · target macro emitted: True · vtr/iter01/synth/raygentop
full VTR flow: ran · completed (packed .net written): True · vtr/iter01/raygentop
blocks packed in target mode: 1
evidence floor (whole-design variants only): passed · no variant introduced (direct swap or restructuring)
acceptance reviewer: rejected [rejected] · call 4
result: repair

checks on the edit

check	result	reason
target mode present in the packed netlist	passed
synthesis and packing agree (macro emitted was packed)	passed
no operations introduced from another family	passed
the block drives real downstream consumers	passed
fused regions declare the shared reduction they feed	passed
a fusion names at least two real regions	passed
restructuring: still feeds the same part of the design	passed
restructuring: datatype family unchanged	passed

PPA of this attempt: dsp 7 · lut 1060 · ff 947 · bram 1 · cpd 5.4179 ns

feedback sent to the editor 543 chars

Acceptance reviewer REJECTED this adaptation as not a legitimate suite member:
REJECT

The witness role is bilinear interpolation (`bilinearintrp`), and the real reduction is `i1r + i2r + i3r` driving output `r`. However, the adaptation breaks that role: `fused_i12r` computes the current `ul * rul`, while `i2r` is a registered prior-cycle product. It therefore does not preserve the original aligned reduction represented by `i1r + i2r + i3r`; the mode performs a temporally mismatched sum rather than the original interpolation computation.

artifacts: edit/raygentop/raygentop.v · edit.diff

Editor attempt 2 · accepted 2026-09-12 17:50:28 -0700 → 2026-09-12 17:51:30 -0700

editor call: call 5 · status ok · changed the file: True · diff against pristine non-empty: True · denied/failed tool calls: 0
synthesis-only check: ran · target macro emitted: True · vtr/iter02/synth/raygentop
full VTR flow: ran · completed (packed .net written): True · vtr/iter02/raygentop
blocks packed in target mode: 1
evidence floor (whole-design variants only): passed · no variant introduced (direct swap or restructuring)
acceptance reviewer: accepted [accepted] · call 6
result: accepted — reviewer agent confirmed

checks on the edit

check	result	reason
target mode present in the packed netlist	passed
synthesis and packing agree (macro emitted was packed)	passed
no operations introduced from another family	passed
the block drives real downstream consumers	passed
fused regions declare the shared reduction they feed	passed
a fusion names at least two real regions	passed
restructuring: still feeds the same part of the design	passed
restructuring: datatype family unchanged	passed

PPA of this attempt: dsp 7 · lut 1061 · ff 962 · bram 1 · cpd 5.28668 ns

artifacts: edit/raygentop/raygentop.v · edit.diff

Synthesis-only result (counted from files)

attempt	file	target macro instances
1	`vtr/iter01/synth/raygentop/raygentop.parmys.blif`	1 × `comb_mult_add_16`
2	`vtr/iter02/synth/raygentop/raygentop.parmys.blif`	1 × `comb_mult_add_16`

Packed netlist (counted from files)

Counted at export time from the .net file(s) in the run dir: occurrences of mode="…" for the target mode, one per packed block in that mode.

attempt	file	target mode present	blocks in target mode
1	`vtr/iter01/raygentop/raygentop.net`	yes	1
2	`vtr/iter02/raygentop/raygentop.net`	yes	1

Modes recorded in the outcome as used after the edit: comb_mult_add_16_mode

Numbers

PPA recorded · 6 call(s)

PPA as recorded

metric	this run	baseline (current)	delta
DSP blocks	7	6	+1
LUTs	1061	1055	+6
FFs	962	946	+16
BRAM	1	1	+0
critical path (ns)	5.28668	4.84502	+0.442 ns (+9.1%)

Baseline: the unmodified raygentop through the same flow under the current settings regime (channel width 300, device koios_extra_small, seed 1, grid 90 x 90 (koios_extra_small), routed at width 300); measured, 2026-09-12 18:36:16 -0700, from configs/baselines/complexDSP.yaml. A lower delta is better on every row.

Read from the VPR log of editor attempt 2, the last whose flow completed: the accepted variant (outcome.json ppa, ppa_iteration).

Coverage

quantity	value	what it counts
candidate regions offered	18	detected regions handed to the planner (one RTL expression each)
candidate instances	18	those regions times the elaborated instance count of their module
regions selected	2	regions the approved plan names
selected instances	2	selected regions times their module's instance count
terms per block	1	product terms one block of the mode fuses
blocks packed	1	packed blocks in the target mode (editor attempt 2)

Offered and packed are not the same unit: a candidate is a source region, a packed block is an elaborated instance, and one block can fuse several regions (or the editor can chain several blocks for one region), so they are recorded raw rather than as a ratio.

Block counts

source	mode	blocks
`vtr/iter01/raygentop/raygentop.net`	`comb_mult_add_16_mode`	1
`vtr/iter02/raygentop/raygentop.net`	`comb_mult_add_16_mode`	1

Tokens and cost per call

#	role	model	status	in	out	reasoning	cache read	cache write	steps	tool calls (errors)	seconds	cost $
1	planner	`opencode-go/gpt-5.6-luna`	ok	9	434	1577	12344	10338	3	3 (0)	23.9	0.0052
2	reviewer:plan	`opencode-go/gpt-5.6-luna`	ok	9	229	653	11079	8389	3	3 (0)	18.2	0.0034
3	editor	`opencode-go/gpt-5.6-luna`	ok	39	1525	1075	110179	12104	13	16 (0)	39.3	0.0084
4	reviewer:acceptance	`opencode-go/gpt-5.6-luna`	ok	9	249	669	13656	7882	3	2 (0)	16.8	0.0033
5	editor	`opencode-go/gpt-5.6-luna`	ok	15	626	2675	73242	5060	5	4 (0)	36.3	0.0067
6	reviewer:acceptance	`opencode-go/gpt-5.6-luna`	ok	12	307	527	58862	28630	4	3 (0)	15.4	0.0093
	total (6 calls)			93	3370	7176	279362	72403			252.0	0.0364

Cost as reported by the gateway per call, summed. Token components are kept separate (uncached input, output, reasoning, cache read, cache write).