Home · Extensions · .fir

`.fir`

1 claimant 1 primary 0 secondary unambiguous primary

SWH popularity

From the SWH-MSR-ARV dataset (Desmazières, Di Cosmo, Lorentz, MSR 2025; file nb_extensions_alphanum.csv) — one row per (ext, year) in the full SWH archive. Case-aggregated. citation.

16.3K

total occurrences

8.9K

since 2019 (54.8%)

2000–2023

years active

Case variants in archive: .fir (16.2K), .FIR (101), .Fir (2) — aggregated above.

Attribution status

This extension is attributed to FIRRTL as primary by 1 authoritative claim.

Authoritative sources: ✓ Linguist ✗ Pygments · no claim ✗ Wikidata · no claim ✗ Wikipedia · no claim

Disagree or have a correction? Open a labelling issue.

Claimants (1)

Languages that list .fir among their extensions. Strength reflects whether the upstream source treated it as their primary extension.

Language	Source	Strength
FIRRTL	linguist	primary

SWH-mined examples (2)

Real archived programs with this extension, byte-verified against the SWH archive. Useful for deciding what this extension actually is when the attribution is uncertain.

FixedPointDivide.fir · 642 B · seen 16× in SWH

predicted: FIRRTL via unique-primary

swh:1:cnt:bd215be4eb34ddf0755025738283e228b174318e;origin=https://github.com/comparch-security/chipyard-random-llc;anchor=swh:1:rev:fa843cfd41a55be03fa721e2495542925e878b87;path=/tools/treadle/samples/FixedPointDivide.fir

Open in SWH · Raw bytes

ZeroWidthIOModule.fir · 554 B · seen 16× in SWH

predicted: FIRRTL via unique-primary

swh:1:cnt:611ef9260fcdd91631d3859f0df075640bf02fb6;origin=https://github.com/comparch-security/chipyard-random-llc;anchor=swh:1:rev:fa843cfd41a55be03fa721e2495542925e878b87;path=/tools/treadle/samples/ZeroWidthIOModule.fir

Open in SWH · Raw bytes