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authorSimonas Kazlauskas <git@kazlauskas.me>2021-03-28 00:11:24 +0200
committerSimonas Kazlauskas <git@kazlauskas.me>2021-04-03 00:00:29 +0300
commit2f000a78bf615b35c4837f920fb6adcad4848351 (patch)
tree3d0cd52de9151067789edfa6f2e6729712dd0256 /compiler/rustc_llvm/llvm-wrapper/PassWrapper.cpp
parent9b0edb7fddacd6a60a380c1ce59159de597ab270 (diff)
downloadrust-2f000a78bf615b35c4837f920fb6adcad4848351.tar.gz
rust-2f000a78bf615b35c4837f920fb6adcad4848351.zip
Manually set dso_local when its valid to do so
This should have no real effect in most cases, as e.g. `hidden`
visibility already implies `dso_local` (or at least LLVM IR does not
preserve the `dso_local` setting if the item is already `hidden`), but
it should fix `-Crelocation-model=static` and improve codegen in
executables.

Note that this PR does not exhaustively port the logic in [clang]. Only
the obviously correct portion and what is necessary to fix a regression
from LLVM 12 that relates to `-Crelocation_model=static`.

Fixes #83335

[clang]: https://github.com/llvm/llvm-project/blob/3001d080c813da20b329303bf8f45451480e5905/clang/lib/CodeGen/CodeGenModule.cpp#L945-L1039
Diffstat (limited to 'compiler/rustc_llvm/llvm-wrapper/PassWrapper.cpp')
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