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enable LTO in optimized builds

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gives 2-5% performance improvement across a board of tests.
LTO is broken when using clang; some libs link fine while others crash
the linker with a segfault in the llvm linker plugin. 🙁
This commit is contained in:
pennae 2021-12-21 19:34:40 +01:00
parent 6097790863
commit 2799fe4cdb
6 changed files with 25 additions and 6 deletions
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3
doc/manual/src/release-notes/rl-next.md
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@ -26,3 +26,6 @@
* Templates can now define a `welcomeText` attribute, which is printed out by
`nix flake {init,new} --template <template>`.
* Nix can now be built with LTO by passing `--enable-lto` to `configure`.
LTO is currently only supported when building with GCC.