Skip to main content

signoff_advisory

logicaffeine_compile::codegen_sva::gpu_simt_rtl

Function signoff_advisory 

Source 
pub fn signoff_advisory(
    arith: &LaneArith,
    width: u32,
    n_lanes: usize,
) -> Option<String>
Expand description

A SOFT signoff advisory (NEVER a lock, NEVER blocks emission): the wide combinational strategies (Combinational, DecomposedFma) at datapath widths >= 32 are met1-antenna-dense on Sky130 — even after fan-out splitting and low utilization, a handful of met1 area-ratio violations remain (empirically ~10 on the N=4 flagship). SequentialFma (one reused adder per lane, bounded fan-out) is antenna-trivial. Returns Some(warning) for the dense envelope, None otherwise.