Issues

• Legal instructions with single-register operands (mask destinations, mask operands, vlm/vsm, reduction scalars) raise illegal instruction

  pulp-platform/ara#511 · Filter by author davidharrishmc opened on Oct 11, 2026
  1

• vfirst.m and vcpop.m with vl=0 hang

  pulp-platform/ara#510 · Filter by author davidharrishmc opened on Oct 11, 2026
  1

• Narrowing instructions are wrong when vd overlaps the lowest register of the wide source

  pulp-platform/ara#509 · Filter by author davidharrishmc opened on Oct 11, 2026
  1

• vslide1up writes nothing at vl=1 and one element past vl otherwise

  pulp-platform/ara#508 · Filter by author davidharrishmc opened on Oct 11, 2026
  1

• vsmul sets vxsat for products that do not saturate and does not saturate (-2^(SEW-1))^2

  pulp-platform/ara#507 · Filter by author davidharrishmc opened on Oct 11, 2026
  1

• vssra/vssrl/vnclip/vnclipu: wrong rounding increment, vssrl shift amount, no vnclip saturation

  pulp-platform/ara#506 · Filter by author davidharrishmc opened on Oct 11, 2026
  1

• Widening .vx/.wx instructions use rs1 bits above SEW

  pulp-platform/ara#505 · Filter by author davidharrishmc opened on Oct 11, 2026
  1

• Segment load/store: wrong field register group at EMUL>1, and a restarted (vstart>0) segment load skips field 0

  pulp-platform/ara#504 · Filter by author vera-rubin opened on Oct 11, 2026

• vfirst.m: two defects — stranded MASKU operands (same class as #448) and an off-by-one index over all-zero mask slices

  pulp-platform/ara#500 · Filter by author renzoandri opened on Oct 2, 2026

• VLDU hangs on 256-beat AXI bursts with nr_lanes = 2 or 4 (vldu.sv:446)

  pulp-platform/ara#499 · Filter by author Toturbii opened on Oct 1, 2026

• vsmul: EW16 scaling, missing min-times-min clipping, and a false vxsat result

  pulp-platform/ara#498 · Filter by author 06lsm opened on Sep 26, 2026

• SLDU: directed reproductions of adjacent-slide, tail-write and partial-word completion differences

  pulp-platform/ara#497 · Filter by author 06lsm opened on Sep 26, 2026

• vfmv.v.f splats 0 (or traps) for SEW < 64 — FP operand ignored

  pulp-platform/ara#496 · Filter by author msuadOf opened on Sep 16, 2026

• Simulation hangs forever when a whole-register/element store reads the destination register of vcompress.vm (also after masked vslideup, vrgather, vnclip, vmadc/vmsbc)

  pulp-platform/ara#495 · Filter by author msuadOf opened on Sep 16, 2026

• RVV 1.0 mandatory vstart != 0 → illegal-instruction list (reductions, vcpop.m, vfirst.m, vmsbf/vmsif/vmsof.m, viota.m, vcompress.vm) is not enforced

  pulp-platform/ara#494 · Filter by author msuadOf opened on Sep 16, 2026

• vnclip/vnclipu with vtype SEW=64 crashes the simulator (simd_alu.sv:444 unique-case assertion) instead of raising illegal-instruction

  pulp-platform/ara#493 · Filter by author msuadOf opened on Sep 16, 2026

• Unable to trace internal submodule signals in waveform output

  pulp-platform/ara#491 · Filter by author dhadhireddy-gnaneshwar opened on Sep 11, 2026

• Open-ended questions about reshuffle

  pulp-platform/ara#466 · Filter by author AD738560581 opened on Jun 11, 2026

• vlseg2e16.v ignores active mask bit 5 and leaves lane 5 undisturbed

  pulp-platform/ara#462 · Filter by author KnightGOKU opened on May 12, 2026

• Segment loads write field 0 but drop later destination fields in vluxseg5ei32 and vlsseg3e64

  pulp-platform/ara#461 · Filter by author KnightGOKU opened on May 12, 2026

• Masked vmerge.vim with vd=v0 and v0.t does not raise illegal-instruction exception

  pulp-platform/ara#460 · Filter by author KnightGOKU opened on May 12, 2026

• vslideup.vx with large stride uses the wrong mask window

  pulp-platform/ara#459 · Filter by author jimmymtest opened on May 9, 2026

• masked vse32.v with nonzero vstart leaves active elements unchanged

  pulp-platform/ara#458 · Filter by author jimmymtest opened on May 9, 2026

• Ara reports ILLEGAL_INSTR for indexed-load misalignment instead of load-address-misaligned

  pulp-platform/ara#457 · Filter by author KnightGOKU opened on May 9, 2026
  1

• Masked-off misaligned indexed load element incorrectly raises illegal-instruction trap

  pulp-platform/ara#456 · Filter by author KnightGOKU opened on May 9, 2026