# Jeff Bezanson remarks on LLVM "getting slower and slower"

**URL:** https://discourse.julialang.org/t/jeff-bezanson-remarks-on-llvm-getting-slower-and-slower/39637
**Category:** Internals & Design
**Created:** [May 17, 2020, 2:37pm UTC](https://discourse.julialang.org/t/jeff-bezanson-remarks-on-llvm-getting-slower-and-slower/39637 "2020-05-17T14:37:52Z")
**Posts on this page:** 1
**Showing post:** 11

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### Author: ![non-Jedi](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/non-jedi/32/3645_2.png) [@non-Jedi](https://discourse.julialang.org/u/non-Jedi)
#### Post date: [May 18, 2020, 1:47pm UTC](https://discourse.julialang.org/t/jeff-bezanson-remarks-on-llvm-getting-slower-and-slower/39637/11 "2020-05-18T13:47:56Z")

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v1.5 will actually have that feature, and it’s already being used for Plots.jl as far as I know.

> The compiler optimization level can now be set per-module using the experimental macro `Base.Experimental.@optlevel n` . For code that is not performance-critical, setting this to 0 or 1 can provide significant latency improvements ([#34896](https://github.com/JuliaLang/julia/issues/34896)).

> <https://github.com/JuliaLang/julia/blob/release-1.5/NEWS.md#new-language-features>

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