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Support aarch64 outlined atomics #416

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Merged
merged 5 commits into from
Apr 30, 2021

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joshtriplett
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On aarch64, GCC and LLVM will now sometimes emit references to
out-of-line intrinsics for atomic operations, used to handle atomic
operations portably between systems with and without the "large-system
extensions" (LSE) introduced in ARM v8.1.

Add these intrinsics to Rust's compiler-rt, both for code generated by
Rust and for libraries a user might link in.

Based on the PR at
#407 .

@joshtriplett
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The CI error here looks unrelated; it's about uses of the bench_black_box feature.

@Amanieu
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Amanieu commented Apr 30, 2021

CI should be fixed by #417

@Amanieu
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Amanieu commented Apr 30, 2021

Can you rebase on the latest master?

gburgessiv and others added 4 commits April 30, 2021 12:15
@joshtriplett
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Looks like the path to lse.S isn't correct, at least in CI. Investigating...

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3 participants