diff options
author | Aspen Smith <root@gws.fyi> | 2024-01-30T19·21-0500 |
---|---|---|
committer | aspen <root@gws.fyi> | 2024-02-01T21·08+0000 |
commit | 8caa097ba84f57515513d86621826556f2374fad (patch) | |
tree | 1eb7ecac8755b63c9907c870eaa6a16a6f87c71e /tvix/cli/src/known_paths.rs | |
parent | 25f092002554fa53497fc7d844ae257832ad655a (diff) |
feat(tvix/eval): Don't emit OpForce for non-thunk constants r/7463
In the compiler, skip emitting an OpForce if the last op was an OpConstant for a non-thunk constant. This gives a small (~1% on my machine) perf boost, eg when evaluating hello.outPath: ❯ hyperfine \ "./before --no-warnings -E '(import <nixpkgs> {}).hello.outPath'" \ "./after --no-warnings -E '(import <nixpkgs> {}).hello.outPath'" Benchmark 1: ./before --no-warnings -E '(import <nixpkgs> {}).hello.outPath' Time (mean ± σ): 1.151 s ± 0.022 s [User: 1.003 s, System: 0.151 s] Range (min … max): 1.123 s … 1.184 s 10 runs Benchmark 2: ./after --no-warnings -E '(import <nixpkgs> {}).hello.outPath' Time (mean ± σ): 1.140 s ± 0.022 s [User: 0.989 s, System: 0.152 s] Range (min … max): 1.115 s … 1.175 s 10 runs Summary ./after --no-warnings -E '(import <nixpkgs> {}).hello.outPath' ran 1.01 ± 0.03 times faster than ./before --no-warnings -E '(import <nixpkgs> {}).hello.outPath' Change-Id: I2105fd431d4bad699087907e16c789418e9a4062 Reviewed-on: https://cl.tvl.fyi/c/depot/+/10714 Reviewed-by: sterni <sternenseemann@systemli.org> Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI
Diffstat (limited to 'tvix/cli/src/known_paths.rs')
0 files changed, 0 insertions, 0 deletions