base16

commit 8731afe374414c9a24c6aa0f599ed1bbbf2be3f6
parent fb63457f2e894eda28250dfe65d0fcd1d195ac2f
Author: Jared Tobin <jared@jtobin.io>
Date:   Sun, 28 Dec 2025 11:31:12 -0330

lib: patch version, ghc, llvm bump

Diffstat:
M
README.md
 | 
19
++++++++++---------
M
bench/Main.hs
 | 
12
+++++++++---
M
flake.lock
 | 
20
++++++++++----------
M
flake.nix
 | 
7
++++---
M
ppad-base16.cabal
 | 
11
+++++++++--

5 files changed, 42 insertions(+), 27 deletions(-)
diff --git a/README.md b/README.md
@@ -39,17 +39,18 @@ Current benchmark figures on 1kb inputs on a relatively-beefy NixOS VPS look
 like (use `cabal bench` to run the benchmark suite):
 
 ```
-  benchmarking encode/ppad-base16
-  time                 7.634 μs   (7.543 μs .. 7.749 μs)
-                       0.999 R²   (0.998 R² .. 0.999 R²)
-  mean                 7.693 μs   (7.622 μs .. 7.768 μs)
-  std dev              240.6 ns   (196.5 ns .. 324.8 ns)
+  benchmarking ppad-base16
+  time                 2.997 μs   (2.988 μs .. 3.009 μs)
+                       1.000 R²   (1.000 R² .. 1.000 R²)
+  mean                 3.024 μs   (3.012 μs .. 3.035 μs)
+  std dev              39.14 ns   (36.12 ns .. 42.87 ns)
+  variance introduced by outliers: 11% (moderately inflated)
 
   benchmarking ppad-base16
-  time                 1.893 μs   (1.871 μs .. 1.919 μs)
-                       0.998 R²   (0.998 R² .. 0.999 R²)
-  mean                 1.897 μs   (1.871 μs .. 1.924 μs)
-  std dev              91.64 ns   (74.26 ns .. 118.2 ns)
+  time                 599.0 ns   (597.3 ns .. 601.3 ns)
+                       1.000 R²   (1.000 R² .. 1.000 R²)
+  mean                 597.3 ns   (596.3 ns .. 598.5 ns)
+  std dev              3.493 ns   (2.623 ns .. 5.111 ns)
 ```
 
 ## Security
diff --git a/bench/Main.hs b/bench/Main.hs
@@ -1,4 +1,5 @@
 {-# OPTIONS_GHC -fno-warn-unused-imports #-}
+{-# LANGUAGE BangPatterns #-}
 {-# LANGUAGE OverloadedStrings #-}
 {-# LANGUAGE PackageImports #-}
 
@@ -17,11 +18,16 @@ main = defaultMain [
   ]
 
 minimal_encode :: Benchmark
-minimal_encode = bench "ppad-base16" $ nf B16.encode (BS.replicate 1024 0x00)
+minimal_encode =
+  let !a = BS.replicate 1024 0x00
+  in  bench "ppad-base16/encode" $
+        nf B16.encode a
 
 minimal_decode :: Benchmark
-minimal_decode = bench "ppad-base16" $ nf B16.decode
-  (B16.encode (BS.replicate 512 0x00))
+minimal_decode =
+  let !a = B16.encode (BS.replicate 512 0x00)
+  in  bench "ppad-base16/decode" $
+        nf B16.decode a
 
 encode :: Benchmark
 encode = bgroup "encode" [
diff --git a/flake.lock b/flake.lock
@@ -5,11 +5,11 @@
         "systems": "systems"
       },
       "locked": {
-        "lastModified": 1710146030,
-        "narHash": "sha256-SZ5L6eA7HJ/nmkzGG7/ISclqe6oZdOZTNoesiInkXPQ=",
+        "lastModified": 1731533236,
+        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "b1d9ab70662946ef0850d488da1c9019f3a9752a",
+        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
         "type": "github"
       },
       "original": {
@@ -20,11 +20,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1725910328,
-        "narHash": "sha256-n9pCtzGZ0httmTwMuEbi5E78UQ4ZbQMr1pzi5N0LAG8=",
+        "lastModified": 1766840161,
+        "narHash": "sha256-Ss/LHpJJsng8vz1Pe33RSGIWUOcqM1fjrehjUkdrWio=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "5775c2583f1801df7b790bf7f7d710a19bac66f4",
+        "rev": "3edc4a30ed3903fdf6f90c837f961fa6b49582d1",
         "type": "github"
       },
       "original": {
@@ -40,11 +40,11 @@
         "nixpkgs": "nixpkgs"
       },
       "locked": {
-        "lastModified": 1737297101,
-        "narHash": "sha256-EnXnq+JLflbWt+DvaGGnY2gfAqsGNOm5vPgHh3hkfwQ=",
+        "lastModified": 1766932084,
+        "narHash": "sha256-GvVsbTfW+B7IQ9K/QP2xcXJAm1lhBin1jYZWNjOzT+o=",
         "ref": "master",
-        "rev": "f29823875250bc99b3891f7373535ccde9a29a44",
-        "revCount": 1,
+        "rev": "353e61763b959b960a55321a85423501e3e9ed7a",
+        "revCount": 2,
         "type": "git",
         "url": "git://git.ppad.tech/nixpkgs.git"
       },
diff --git a/flake.nix b/flake.nix
@@ -18,8 +18,9 @@
 
         pkgs = import nixpkgs { inherit system; };
         hlib = pkgs.haskell.lib;
+        llvm = pkgs.llvmPackages_19.llvm;
 
-        hpkgs = pkgs.haskell.packages.ghc981.extend (new: old: {
+        hpkgs = pkgs.haskell.packages.ghc910.extend (new: old: {
           ${lib} = old.callCabal2nixWithOptions lib ./. "--enable-profiling" {};
         });
 
@@ -38,10 +39,9 @@
             buildInputs = [
               cabal
               cc
+              llvm
             ];
 
-            inputsFrom = builtins.attrValues self.packages.${system};
-
             doBenchmark = true;
 
             shellHook = ''
@@ -50,6 +50,7 @@
               echo "cc:    $(${cc}/bin/cc --version)"
               echo "ghc:   $(${ghc}/bin/ghc --version)"
               echo "cabal: $(${cabal}/bin/cabal --version)"
+              echo "llc:   $(${llvm}/bin/llc --version | head -2 | tail -1)"
             '';
           };
         }
diff --git a/ppad-base16.cabal b/ppad-base16.cabal
@@ -1,6 +1,6 @@
 cabal-version:      3.0
 name:               ppad-base16
-version:            0.2.0
+version:            0.2.1
 synopsis:           Pure base16 encoding and decoding on bytestrings.
 license:            MIT
 license-file:       LICENSE
@@ -8,11 +8,16 @@ author:             Jared Tobin
 maintainer:         jared@ppad.tech
 category:           Cryptography
 build-type:         Simple
-tested-with:        GHC == 9.8.1
+tested-with:        GHC == { 9.10.3 }
 extra-doc-files:    CHANGELOG
 description:
   Pure base16 (hexadecimal) encoding and decoding on bytestrings.
 
+flag llvm
+  description: Use GHC's LLVM backend.
+  default:     False
+  manual:      True
+
 source-repository head
   type:     git
   location: git.ppad.tech/base16.git
@@ -22,6 +27,8 @@ library
   hs-source-dirs:   lib
   ghc-options:
       -Wall
+  if flag(llvm)
+    ghc-options: -fllvm -O2
   exposed-modules:
       Data.ByteString.Base16
   build-depends: