Enable ALU→ALU same-cycle forwarding for all 8 co-issue slots#108

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syifan wants to merge 40 commits intomainfrom

leo/fix-fp-coissue

Commits on Feb 19, 2026

[Leo] Enable ALU→ALU same-cycle forwarding for all 8-wide co-issue slots

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[Leo] Restrict ALU→ALU forwarding to FP ops only (fix integer regressions)

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[Maya] Update h5_accuracy_results.json with fresh CI run 22190131432

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[Leo] Gate ALU forwarding on format, not IsFloat (fix jacobi-1d/bicg)

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[Maya] Update h5_accuracy_results.json with CI run 22194200467 (commit 6e80856)

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[Leo] Narrow forwarding gate to MADD/SMULL only (fix reductiontree/strideindirect regression)

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[Maya] Update h5_accuracy_results.json with CI run 22194997028 (commit 11aa8ce)
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[Maya] Update h5_accuracy_results.json with CI run 22195291854 (commit 11aa8ce)

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[Leo] Expand forwarding gate: Bitfield producers + DataProc3Src consumers

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[Maya] Update h5_accuracy_results.json with CI run 22198904920 (commit e9a0185)

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[Leo] Add targeted CMP/flag-only forwarding gate (DPImm→DPImm, Rd==31)

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[Leo] Fix gofmt error + add MADD Ra (Rt2) forwarding check

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[Maya] Update h5_accuracy_results.json with CI run 22200656642 (commit 0fb7a22)

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[Leo] Add load-use forwarding from cache stage for LDR→MADD

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[Maya] Update h5_accuracy_results.json with CI run 22204159767 (commit 28f7ec1)

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[Athena] Update roadmap: M17 partial success, revise to M17b (bicg load-use latency)
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[Leo] Eliminate load-use stall for non-dcache path via broadened MEM→EX forwarding

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[Maya] Update h5_accuracy_results.json with CI run 22204801981 (commit 23e2791)

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Commits on Feb 20, 2026

Revert "[Leo] Eliminate load-use stall for non-dcache path via broadened MEM→EX forwarding"
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[Leo] Reduce non-dcache load EX latency from 3 to 2 cycles for ~4-cycle load-to-use

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[Maya] Update h5_accuracy_results.json with CI run 22207487553 (commit 51c4b7d)

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[Maya] Update h5_accuracy_results.json with CI runs 22207487553 + 22207607443 (commit 51c4b7d)

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[Leo] Eliminate load-use stall bubbles for non-dcache path via broadened MEM→EX forwarding

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[Maya] Update h5_accuracy_results.json with CI run 22208659298 (commit 875cf70)

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[Leo] Allow non-dcache load→consumer co-issue via per-slot MEM→EX forwarding

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[Maya] Update h5_accuracy_results.json with CI runs 22211620850 + 22211620842 (commit b1f8d23)
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Revert "[Leo] Allow non-dcache load→consumer co-issue via per-slot MEM→EX forwarding"
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Revert "[Leo] Eliminate load-use stall bubbles for non-dcache path via broadened MEM→EX forwarding"
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[Leo] Increase non-dcache load EX latency to 3 for 4-cycle load-to-use matching M2

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[Athena] Update roadmap: M17b failed, pivot to arithmetic+branchheavy targets

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[Maya] Update h5_accuracy_results.json with microbench CI run 22215020258 (commit 55663fc)

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[Leo] Add stall analysis for arithmetic and branchheavy benchmarks

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[Maya] Update h5_accuracy_results.json with polybench CI run 22215020276 (partial)

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[Nina] Restructure arithmetic_sequential benchmark to use loop

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[Maya] Update h5_accuracy_results.json with all-fresh polybench data from CI run 22215020276

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[Leo] Add analysis report for arithmetic CPI issue (#29)

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[Nina] Restructure branchheavy benchmark to use loop wrapper

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[Maya] Update h5_accuracy_results.json with arithmetic CPI 0.188 from CI run 22219381657

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[Leo] Fix gofmt lint and add 1-cycle taken-branch redirect penalty

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[Maya] Update h5_accuracy_results.json with microbench CPI from CI run 22223493122

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