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| author | bors <bors@rust-lang.org> | 2021-04-05 21:14:27 +0000 |
|---|---|---|
| committer | bors <bors@rust-lang.org> | 2021-04-05 21:14:27 +0000 |
| commit | d32238532138485c80db4f2cd596372bce214e00 (patch) | |
| tree | 1bd4c49de1e3d611abbc1f95909013a5b674c4ba /compiler/rustc_llvm/llvm-wrapper/PassWrapper.cpp | |
| parent | d203fceeb12f8c0e3123fc45036575018d2f990a (diff) | |
| parent | 3965773ae7743e051070b4eed3c6e02e9df3b25c (diff) | |
| download | rust-d32238532138485c80db4f2cd596372bce214e00.tar.gz rust-d32238532138485c80db4f2cd596372bce214e00.zip | |
Auto merge of #83152 - guswynn:jemallocator_part2, r=Mark-Simulacrum
Use tikv-jemallocator in rustc/rustdoc in addition to jemalloc-sys when enabled. In https://github.com/rust-lang/rust/pull/81782 it was mentioned that one reason rustc may benefit from minimalloc is it doesn't use the `sdallocx` api from jemalloc. Currently, on unix, rust uses jemalloc by importing its symbols to use them with the default, System (libc) global allocator. This PR switches its global alloc to `tikv-jemallocator`, which correctly uses sized deallocation (https://docs.rs/tikv-jemallocator/0.4.1/src/tikv_jemallocator/lib.rs.html#121-126). `tikv-jemallocator`, as far as I can tell, is a more up-to-date set of bindings to jemalloc than `jemallocator` The perf results of this pr are in large part due to the version upgrade of jemalloc, but sized deallocation has a non-trivial improvement, particularly to rustdoc. This pr also includes changes to bootstrap to correctly pass the jemalloc feature through to the rustdoc build
Diffstat (limited to 'compiler/rustc_llvm/llvm-wrapper/PassWrapper.cpp')
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